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aus+uk / uk.rec.audio / Re: Speaker relay.

SubjectAuthor
* Speaker relay.Dave Plowman (News)
+* Re: Speaker relay.Phil Allison
|`* Re: Speaker relay.Dave Plowman (News)
| +* Re: Speaker relay.Don Pearce
| |`- Re: Speaker relay.Brian Gaff \(Sofa\)
| +* Re: Speaker relay.Trevor Wilson
| |+* Re: Speaker relay.Phil Allison
| ||`* Re: Speaker relay.Trevor Wilson
| || `* Re: Speaker relay.Phil Allison
| ||  `* Re: Speaker relay.Trevor Wilson
| ||   `* Re: Speaker relay.Phil Allison
| ||    `* Re: Speaker relay.Trevor Wilson
| ||     `- Re: Speaker relay.Phil Allison
| |+- Re: Speaker relay.Brian Gaff \(Sofa\)
| |`* Re: Speaker relay.Jim Lesurf
| | +* Re: Speaker relay.Dave Plowman (News)
| | |`* Re: Speaker relay.Jim Lesurf
| | | +* Re: Speaker relay.Phil Allison
| | | |`- Re: Speaker relay.Jim Lesurf
| | | `* Re: Speaker relay.Dave Plowman (News)
| | |  +* Re: Speaker relay.Don Pearce
| | |  |+* Re: Speaker relay.Woody
| | |  ||+- Re: Speaker relay.Don Pearce
| | |  ||`* Re: Speaker relay.Dave Plowman (News)
| | |  || `- Re: Speaker relay.Dave Plowman (News)
| | |  |`- Re: Speaker relay.Dave Plowman (News)
| | |  +* Re: Speaker relay.Phil Allison
| | |  |`* Re: Speaker relay.Dave Plowman (News)
| | |  | `* Re: Speaker relay.Phil Allison
| | |  |  `* Re: Speaker relay.Dave Plowman (News)
| | |  |   `* Re: Speaker relay.Phil Allison
| | |  |    `* Re: Speaker relay.Dave Plowman (News)
| | |  |     `* Re: Speaker relay.Phil Allison
| | |  |      `* Re: Speaker relay.Dave Plowman (News)
| | |  |       `* Re: Speaker relay.Phil Allison
| | |  |        `* Re: Speaker relay.Dave Plowman (News)
| | |  |         +- Re: Speaker relay.Don Pearce
| | |  |         `- Re: Speaker relay.Phil Allison
| | |  `* Re: Speaker relay.Jim Lesurf
| | |   `* Re: Speaker relay.Bob Latham
| | |    +* Re: Speaker relay.Dave Plowman (News)
| | |    |+- Re: Speaker relay.Don Pearce
| | |    |+- Re: Speaker relay.Bob Latham
| | |    |`* Re: Speaker relay.tony sayer
| | |    | `* Re: Speaker relay.Dave Plowman (News)
| | |    |  `- Re: Speaker relay.tony sayer
| | |    `* Re: Speaker relay.tony sayer
| | |     `* Re: Speaker relay.Phil Allison
| | |      `* Re: Speaker relay.tony sayer
| | |       +* Re: Speaker relay.Phil Allison
| | |       |`* Re: Speaker relay.tony sayer
| | |       | `- Re: Speaker relay.Phil Allison
| | |       `* Re: Speaker relay.Dave Plowman (News)
| | |        +* Re: Speaker relay.tony sayer
| | |        |`* Re: Speaker relay.Dave Plowman (News)
| | |        | `- Re: Speaker relay.tony sayer
| | |        `* Re: Speaker relay.Jim Lesurf
| | |         `* Re: Speaker relay.Dave Plowman (News)
| | |          `* Re: Speaker relay.Trevor Wilson
| | |           +* Re: Speaker relay.Bob Latham
| | |           |`* Re: Speaker relay.Trevor Wilson
| | |           | `* Re: Speaker relay.Phil Allison
| | |           |  `* Re: Speaker relay.Trevor Wilson
| | |           |   +* Re: Speaker relay.Don Pearce
| | |           |   |`* Re: Speaker relay.Phil Allison
| | |           |   | `* Re: Speaker relay.Don Pearce
| | |           |   |  `* Re: Speaker relay.Phil Allison
| | |           |   |   `* Re: Speaker relay.Don Pearce
| | |           |   |    `- Re: Speaker relay.Phil Allison
| | |           |   `* Re: Speaker relay.Bob Latham
| | |           |    +* Re: Speaker relay.Don Pearce
| | |           |    |+* Re: Speaker relay.Phil Allison
| | |           |    ||+- Re: Speaker relay.Bob Latham
| | |           |    ||`* Re: Speaker relay.Phil Allison
| | |           |    || +- Re: Speaker relay.Bob Latham
| | |           |    || `* Re: Speaker relay.Jim Lesurf
| | |           |    ||  `* Re: Speaker relay.Bob Latham
| | |           |    ||   +- Re: Speaker relay.Bob Latham
| | |           |    ||   `- Re: Speaker relay.Jim Lesurf
| | |           |    |`* Re: Speaker relay.Don Pearce
| | |           |    | `- Re: Speaker relay.Jim Lesurf
| | |           |    +* Re: Speaker relay.Trevor Wilson
| | |           |    |`* Re: Speaker relay.Jim Lesurf
| | |           |    | `* Re: Speaker relay.Trevor Wilson
| | |           |    |  +* Re: Speaker relay.Bob Latham
| | |           |    |  |`* Re: Speaker relay.Trevor Wilson
| | |           |    |  | +- Re: Speaker relay.Don Pearce
| | |           |    |  | +- Re: Speaker relay.Bob Latham
| | |           |    |  | `* Re: Speaker relay.Phil Allison
| | |           |    |  |  +* Re: Speaker relay.Bob Latham
| | |           |    |  |  |`- Re: Speaker relay.Bob Latham
| | |           |    |  |  +* Re: Speaker relay.Jim Lesurf
| | |           |    |  |  |+- Re: Speaker relay.Phil Allison
| | |           |    |  |  |`- Re: Speaker relay.Bob Latham
| | |           |    |  |  `- Re: Speaker relay.Bob Latham
| | |           |    |  `* Re: Speaker relay.Jim Lesurf
| | |           |    |   +- Re: Speaker relay.Bob Latham
| | |           |    |   `- Re: Speaker relay.Phil Allison
| | |           |    +* Re: Speaker relay.Don Pearce
| | |           |    |`* Re: Speaker relay.Bob Latham
| | |           |    | `* Re: Speaker relay.Don Pearce
| | |           |    `- Re: Speaker relay.Jim Lesurf
| | |           `* Re: Speaker relay.Dave Plowman (News)
| | `* Re: Speaker relay.Phil Allison
| `- Re: Speaker relay.Brian Gaff \(Sofa\)
+- Re: Speaker relay.Bob Latham
`* Re: Speaker relay.Woody

Pages:123456
Re: Speaker relay.

<597bd7e6b4dave@davenoise.co.uk>

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https://www.novabbs.com/aus+uk/article-flat.php?id=816&group=uk.rec.audio#816

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Path: i2pn2.org!i2pn.org!aioe.org!qe0pTZfgx/+XzFWPUk42RQ.user.46.165.242.75.POSTED!not-for-mail
From: dav...@davenoise.co.uk (Dave Plowman (News))
Newsgroups: uk.rec.audio
Subject: Re: Speaker relay.
Date: Fri, 15 Oct 2021 15:52:43 +0100
Organization: None
Message-ID: <597bd7e6b4dave@davenoise.co.uk>
References: <597930b111dave@davenoise.co.uk>
<6a36030f-b14f-4076-aeed-28425dffeaeen@googlegroups.com>
<59793f2893dave@davenoise.co.uk> <isgu48Ffav7U1@mid.individual.net> <5979a94a8bnoise@audiomisc.co.uk> <597a33befbdave@davenoise.co.uk> <597ab1d388noise@audiomisc.co.uk>
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 by: Dave Plowman (News) - Fri, 15 Oct 2021 14:52 UTC

In article <597ab1d388noise@audiomisc.co.uk>,
Jim Lesurf <noise@audiomisc.co.uk> wrote:
> In article <597a33befbdave@davenoise.co.uk>, Dave Plowman (News)
> <dave@davenoise.co.uk> wrote:

> > > .. And I wired across the relays in my amps, anyway. :-)

> > What did you do with the other connections between amp and speakers? ;-)

> Not sure what you have in mind. For my 700 amps I never use the headphone
> sockets. The 600 has ye olde switch in its socket, but again, I've never
> used it.

A relay uses contacts held together. No difference in principle from a
screw connection (or plug) used on amp output and speaker input. If you
distrust point to point contacts, you'd need to go to soldered ones. ;-)

> > > However the unknown is what the typical *actual* voltage, current, and
> > > load inductanc might be in real use. To know that, Dave would need
> > > more observational data. Also is this for protection, or what? Matters
> > > if the amp is going full belt or idling.

> > The usual +/- 50v supply. Nominal 8 ohm speakers.

> > Basically to prevent a switch on/off thump. Very unlikely to have to
> > handle full output under those conditions.

> Depends a bit on how big the thump may be and how long the delay you
> arrange before the relay closes. However if that's all you need then you
> probably don't need a very high current or voltege make/break value. Just
> focus on any info on lifetime reliability.

> The worry with power amps is that the switch may need to open/close when
> large voltages or currents are involved, and a very reactive load. i.e.
> when you make or break with a lound signal level into a 'difficult'
> speaker.

> Also, lifetime. Pretty much any relay will wear out in due time.

> TBH I never bothered with worrying about a switch-on thump. If you choose
> speakers and amp to work together its not likely to do harm, just make some
> listeners worry needlessly. I tend to regard it as confirmation that the
> amp came on. 8-]

Not really keen on 'it doesn't worry me' type of answer. I could say the
same about hiss or gross distortion from an amp. After all plenty don't
seem worried about such things.

I was hoping for some guidance on a type of relay with perhaps lower than
usual coil power consumption. I'll likely use an independent power supply
just for the relays and timer circuit, so the smaller, the better.

--
*We are born naked, wet, and hungry. Then things get worse.

Dave Plowman dave@davenoise.co.uk London SW
To e-mail, change noise into sound.

Re: Speaker relay.

<61699b6d.26525984@news.eternal-september.org>

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https://www.novabbs.com/aus+uk/article-flat.php?id=817&group=uk.rec.audio#817

 copy link   Newsgroups: uk.rec.audio
Path: i2pn2.org!i2pn.org!eternal-september.org!reader02.eternal-september.org!.POSTED!not-for-mail
From: spa...@spam.com (Don Pearce)
Newsgroups: uk.rec.audio
Subject: Re: Speaker relay.
Date: Fri, 15 Oct 2021 15:20:14 GMT
Organization: A noiseless patient Spider
Lines: 68
Message-ID: <61699b6d.26525984@news.eternal-september.org>
References: <597930b111dave@davenoise.co.uk> <6a36030f-b14f-4076-aeed-28425dffeaeen@googlegroups.com> <59793f2893dave@davenoise.co.uk> <isgu48Ffav7U1@mid.individual.net> <5979a94a8bnoise@audiomisc.co.uk> <597a33befbdave@davenoise.co.uk> <597ab1d388noise@audiomisc.co.uk> <597bd7e6b4dave@davenoise.co.uk>
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 by: Don Pearce - Fri, 15 Oct 2021 15:20 UTC

On Fri, 15 Oct 2021 15:52:43 +0100, "Dave Plowman (News)"
<dave@davenoise.co.uk> wrote:

>In article <597ab1d388noise@audiomisc.co.uk>,
> Jim Lesurf <noise@audiomisc.co.uk> wrote:
>> In article <597a33befbdave@davenoise.co.uk>, Dave Plowman (News)
>> <dave@davenoise.co.uk> wrote:
>
>> > > .. And I wired across the relays in my amps, anyway. :-)
>
>> > What did you do with the other connections between amp and speakers? ;-)
>
>> Not sure what you have in mind. For my 700 amps I never use the headphone
>> sockets. The 600 has ye olde switch in its socket, but again, I've never
>> used it.
>
>A relay uses contacts held together. No difference in principle from a
>screw connection (or plug) used on amp output and speaker input. If you
>distrust point to point contacts, you'd need to go to soldered ones. ;-)
>
>
>> > > However the unknown is what the typical *actual* voltage, current, and
>> > > load inductanc might be in real use. To know that, Dave would need
>> > > more observational data. Also is this for protection, or what? Matters
>> > > if the amp is going full belt or idling.
>
>> > The usual +/- 50v supply. Nominal 8 ohm speakers.
>
>> > Basically to prevent a switch on/off thump. Very unlikely to have to
>> > handle full output under those conditions.
>
>> Depends a bit on how big the thump may be and how long the delay you
>> arrange before the relay closes. However if that's all you need then you
>> probably don't need a very high current or voltege make/break value. Just
>> focus on any info on lifetime reliability.
>
>> The worry with power amps is that the switch may need to open/close when
>> large voltages or currents are involved, and a very reactive load. i.e.
>> when you make or break with a lound signal level into a 'difficult'
>> speaker.
>
>> Also, lifetime. Pretty much any relay will wear out in due time.
>
>> TBH I never bothered with worrying about a switch-on thump. If you choose
>> speakers and amp to work together its not likely to do harm, just make some
>> listeners worry needlessly. I tend to regard it as confirmation that the
>> amp came on. 8-]
>
>Not really keen on 'it doesn't worry me' type of answer. I could say the
>same about hiss or gross distortion from an amp. After all plenty don't
>seem worried about such things.
>
>I was hoping for some guidance on a type of relay with perhaps lower than
>usual coil power consumption. I'll likely use an independent power supply
>just for the relays and timer circuit, so the smaller, the better.

The important thing with contacts is that they wipe, and don't simply
touch. In fact you have to try quite hard to design contacts that
don't wipe. My earlier suggestion of a car headlight relay was
serious. Those things have to work in horrible conditions and reliably
switch DC at probably roughly 80 amps with a QI bulb.

d

--
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Re: Speaker relay.

<skc9rg$or1$1@dont-email.me>

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https://www.novabbs.com/aus+uk/article-flat.php?id=818&group=uk.rec.audio#818

 copy link   Newsgroups: uk.rec.audio
Path: i2pn2.org!i2pn.org!eternal-september.org!reader02.eternal-september.org!.POSTED!not-for-mail
From: harroga...@ntlworld.com (Woody)
Newsgroups: uk.rec.audio
Subject: Re: Speaker relay.
Date: Fri, 15 Oct 2021 17:22:07 +0100
Organization: A noiseless patient Spider
Lines: 77
Message-ID: <skc9rg$or1$1@dont-email.me>
References: <597930b111dave@davenoise.co.uk>
<6a36030f-b14f-4076-aeed-28425dffeaeen@googlegroups.com>
<59793f2893dave@davenoise.co.uk> <isgu48Ffav7U1@mid.individual.net>
<5979a94a8bnoise@audiomisc.co.uk> <597a33befbdave@davenoise.co.uk>
<597ab1d388noise@audiomisc.co.uk> <597bd7e6b4dave@davenoise.co.uk>
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 by: Woody - Fri, 15 Oct 2021 16:22 UTC

On Fri 15/10/2021 16:20, Don Pearce wrote:
> On Fri, 15 Oct 2021 15:52:43 +0100, "Dave Plowman (News)"
> <dave@davenoise.co.uk> wrote:
>
>> In article <597ab1d388noise@audiomisc.co.uk>,
>> Jim Lesurf <noise@audiomisc.co.uk> wrote:
>>> In article <597a33befbdave@davenoise.co.uk>, Dave Plowman (News)
>>> <dave@davenoise.co.uk> wrote:
>>
>>>>> .. And I wired across the relays in my amps, anyway. :-)
>>
>>>> What did you do with the other connections between amp and speakers? ;-)
>>
>>> Not sure what you have in mind. For my 700 amps I never use the headphone
>>> sockets. The 600 has ye olde switch in its socket, but again, I've never
>>> used it.
>>
>> A relay uses contacts held together. No difference in principle from a
>> screw connection (or plug) used on amp output and speaker input. If you
>> distrust point to point contacts, you'd need to go to soldered ones. ;-)
>>
>>
>>>>> However the unknown is what the typical *actual* voltage, current, and
>>>>> load inductanc might be in real use. To know that, Dave would need
>>>>> more observational data. Also is this for protection, or what? Matters
>>>>> if the amp is going full belt or idling.
>>
>>>> The usual +/- 50v supply. Nominal 8 ohm speakers.
>>
>>>> Basically to prevent a switch on/off thump. Very unlikely to have to
>>>> handle full output under those conditions.
>>
>>> Depends a bit on how big the thump may be and how long the delay you
>>> arrange before the relay closes. However if that's all you need then you
>>> probably don't need a very high current or voltege make/break value. Just
>>> focus on any info on lifetime reliability.
>>
>>> The worry with power amps is that the switch may need to open/close when
>>> large voltages or currents are involved, and a very reactive load. i.e.
>>> when you make or break with a lound signal level into a 'difficult'
>>> speaker.
>>
>>> Also, lifetime. Pretty much any relay will wear out in due time.
>>
>>> TBH I never bothered with worrying about a switch-on thump. If you choose
>>> speakers and amp to work together its not likely to do harm, just make some
>>> listeners worry needlessly. I tend to regard it as confirmation that the
>>> amp came on. 8-]
>>
>> Not really keen on 'it doesn't worry me' type of answer. I could say the
>> same about hiss or gross distortion from an amp. After all plenty don't
>> seem worried about such things.
>>
>> I was hoping for some guidance on a type of relay with perhaps lower than
>> usual coil power consumption. I'll likely use an independent power supply
>> just for the relays and timer circuit, so the smaller, the better.
>
> The important thing with contacts is that they wipe, and don't simply
> touch. In fact you have to try quite hard to design contacts that
> don't wipe. My earlier suggestion of a car headlight relay was
> serious. Those things have to work in horrible conditions and reliably
> switch DC at probably roughly 80 amps with a QI bulb.
>

80AMPS????????

What are you using, a searchlight?

The maximum legal headlight power is (or was) 60W although I haven't
seen an e-badged lamps above 55W for years. 2 x 55W @ 12V is a little
over 9 amps.

HID lamps are even lower powered, usually about 35W.

Agreed surge current can be higher but not 9 times higher!!

Re: Speaker relay.

<6169aac7.30456312@news.eternal-september.org>

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https://www.novabbs.com/aus+uk/article-flat.php?id=819&group=uk.rec.audio#819

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From: spa...@spam.com (Don Pearce)
Newsgroups: uk.rec.audio
Subject: Re: Speaker relay.
Date: Fri, 15 Oct 2021 16:23:40 GMT
Organization: A noiseless patient Spider
Lines: 25
Message-ID: <6169aac7.30456312@news.eternal-september.org>
References: <597930b111dave@davenoise.co.uk> <6a36030f-b14f-4076-aeed-28425dffeaeen@googlegroups.com> <59793f2893dave@davenoise.co.uk> <isgu48Ffav7U1@mid.individual.net> <5979a94a8bnoise@audiomisc.co.uk> <597a33befbdave@davenoise.co.uk> <597ab1d388noise@audiomisc.co.uk> <597bd7e6b4dave@davenoise.co.uk> <61699b6d.26525984@news.eternal-september.org> <skc9rg$or1$1@dont-email.me>
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 by: Don Pearce - Fri, 15 Oct 2021 16:23 UTC

On Fri, 15 Oct 2021 17:22:07 +0100, Woody <harrogate3@ntlworld.com>
wrote:

>80AMPS????????
>
>What are you using, a searchlight?
>
>The maximum legal headlight power is (or was) 60W although I haven't
>seen an e-badged lamps above 55W for years. 2 x 55W @ 12V is a little
>over 9 amps.
>
>HID lamps are even lower powered, usually about 35W.
>
>Agreed surge current can be higher but not 9 times higher!!

80 amps is a pretty good estimate for a pair of cold QI bulbs. The
"on" temperature of those things is very high and the resistance drop
when they are off is huge.

d

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Re: Speaker relay.

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Date: Fri, 15 Oct 2021 14:05:47 -0700 (PDT)
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Subject: Re: Speaker relay.
From: palliso...@gmail.com (Phil Allison)
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 by: Phil Allison - Fri, 15 Oct 2021 21:05 UTC

Dave Plowman (Lunatic) wrote:
==========================
>
> I was hoping for some guidance on a type of relay with perhaps lower than
> usual coil power consumption. I'll likely use an independent power supply
> just for the relays and timer circuit, so the smaller, the better.
>

** Ebay has dozens of PCB speaker relays like this:

https://www.ebay.com.au/itm/184557057878?hash=item2af8753756:g:0FgAAOSw4-RfwhMF

Omron relays are high quality and these seem to be double pole from the pic.

Just add a 15VAC tranny with 2 or 3VA capacity.

....... Phil

Re: Speaker relay.

<597bba23a6noise@audiomisc.co.uk>

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From: noi...@audiomisc.co.uk (Jim Lesurf)
Subject: Re: Speaker relay.
Newsgroups: uk.rec.audio
Date: Fri, 15 Oct 2021 10:27:37 +0100
Message-ID: <597bba23a6noise@audiomisc.co.uk>
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 by: Jim Lesurf - Fri, 15 Oct 2021 09:27 UTC

In article <9dd153d8-0d0f-4edc-863e-5a8cc43828ecn@googlegroups.com>, Phil
Allison <pallison49@gmail.com> wrote:

>
> > TBH I never bothered with worrying about a switch-on thump.

> ** Or anything else that mattered to owners and you were clueless to
> fix.

> Wot a pommy fraud.

Erm... for those who, like Phil, have no clue about the amps I designed.
The series 700 *does* have an output relay which prevents the user from
being alarmed by a switch-on thump. Just that I bypassed mine after they
failed c20 years later because I know the thump is totally harmless.

They failed because someone else decided to not use the relays I'd chosen,
and used cheaper smaller ones. They still worked for decades, though. Just
not for 40 years. :-)

Jim

--
Please use the address on the audiomisc page if you wish to email me.
Electronics https://www.st-andrews.ac.uk/~www_pa/Scots_Guide/intro/electron.htm
biog http://jcgl.orpheusweb.co.uk/history/ups_and_downs.html
Audio Misc http://www.audiomisc.co.uk/index.html

Re: Speaker relay.

<597c552a73dave@davenoise.co.uk>

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From: dav...@davenoise.co.uk (Dave Plowman (News))
Newsgroups: uk.rec.audio
Subject: Re: Speaker relay.
Date: Sat, 16 Oct 2021 14:40:55 +0100
Organization: None
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 by: Dave Plowman (News) - Sat, 16 Oct 2021 13:40 UTC

In article <61699b6d.26525984@news.eternal-september.org>,
Don Pearce <spam@spam.com> wrote:
> The important thing with contacts is that they wipe, and don't simply
> touch. In fact you have to try quite hard to design contacts that
> don't wipe. My earlier suggestion of a car headlight relay was
> serious. Those things have to work in horrible conditions and reliably
> switch DC at probably roughly 80 amps with a QI bulb.

Snag with car relays (apart from size) is there's little need to keep the
coil power consumption to a minimum.

--
*What are the pink bits in my tyres? Cyclists & Joggers*

Dave Plowman dave@davenoise.co.uk London SW
To e-mail, change noise into sound.

Re: Speaker relay.

<597c55f524dave@davenoise.co.uk>

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From: dav...@davenoise.co.uk (Dave Plowman (News))
Newsgroups: uk.rec.audio
Subject: Re: Speaker relay.
Date: Sat, 16 Oct 2021 14:49:34 +0100
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 by: Dave Plowman (News) - Sat, 16 Oct 2021 13:49 UTC

In article <skc9rg$or1$1@dont-email.me>,
Woody <harrogate3@ntlworld.com> wrote:
> 80AMPS????????

> What are you using, a searchlight?

> The maximum legal headlight power is (or was) 60W although I haven't
> seen an e-badged lamps above 55W for years. 2 x 55W @ 12V is a little
> over 9 amps.

> HID lamps are even lower powered, usually about 35W.

> Agreed surge current can be higher but not 9 times higher!!

Dear ol' phil. Quick to criticise. But not to give advice.

The resistance of a cold 55w halogen headlight bulb is about 0.25 ohms.

So the peak start up current at 13.8 volt some 55 amps. For one.

--
*Give me ambiguity or give me something else.

Dave Plowman dave@davenoise.co.uk London SW
To e-mail, change noise into sound.

Re: Speaker relay.

<597c568af0dave@davenoise.co.uk>

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From: dav...@davenoise.co.uk (Dave Plowman (News))
Newsgroups: uk.rec.audio
Subject: Re: Speaker relay.
Date: Sat, 16 Oct 2021 14:55:57 +0100
Organization: None
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 by: Dave Plowman (News) - Sat, 16 Oct 2021 13:55 UTC

In article <c5e5734d-eac8-4007-9ea7-ba791aa3dae7n@googlegroups.com>,
Phil Allison <pallison49@gmail.com> wrote:
> Dave Plowman (Lunatic) wrote:
> ==========================
> >
> > I was hoping for some guidance on a type of relay with perhaps lower than
> > usual coil power consumption. I'll likely use an independent power supply
> > just for the relays and timer circuit, so the smaller, the better.
> >

> ** Ebay has dozens of PCB speaker relays like this:

> https://www.ebay.com.au/itm/184557057878?hash=item2af8753756:g:0FgAAOSw4-RfwhMF

> Omron relays are high quality and these seem to be double pole from the pic.

> Just add a 15VAC tranny with 2 or 3VA capacity.

Don't want speaker protection. Just the relay. And 'your' one appears to
use Omrin, by the ad.

--
*HOW IS IT POSSIBLE TO HAVE A CIVIL WAR?

Dave Plowman dave@davenoise.co.uk London SW
To e-mail, change noise into sound.

Re: Speaker relay.

<597c57df8fdave@davenoise.co.uk>

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From: dav...@davenoise.co.uk (Dave Plowman (News))
Newsgroups: uk.rec.audio
Subject: Re: Speaker relay.
Date: Sat, 16 Oct 2021 15:10:29 +0100
Organization: None
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 by: Dave Plowman (News) - Sat, 16 Oct 2021 14:10 UTC

In article <597c55f524dave@davenoise.co.uk>,
Dave Plowman (News) <dave@davenoise.co.uk> wrote:
> In article <skc9rg$or1$1@dont-email.me>,
> Woody <harrogate3@ntlworld.com> wrote:
> > 80AMPS????????

> > What are you using, a searchlight?

> > The maximum legal headlight power is (or was) 60W although I haven't
> > seen an e-badged lamps above 55W for years. 2 x 55W @ 12V is a little
> > over 9 amps.

> > HID lamps are even lower powered, usually about 35W.

> > Agreed surge current can be higher but not 9 times higher!!

> Dear ol' phil. Quick to criticise. But not to give advice.

> The resistance of a cold 55w halogen headlight bulb is about 0.25 ohms.

> So the peak start up current at 13.8 volt some 55 amps. For one.

Sorry Phil. ;-)

--
*To steal ideas from *one* person is plagiarism; from many, research*

Dave Plowman dave@davenoise.co.uk London SW
To e-mail, change noise into sound.

Re: Speaker relay.

<6b9512ba-aca8-420f-b804-d6ac45623d34n@googlegroups.com>

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Subject: Re: Speaker relay.
From: palliso...@gmail.com (Phil Allison)
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 by: Phil Allison - Sat, 16 Oct 2021 21:45 UTC

Dave Plowman (Luatic Pom) News) wrote:
====================================
> > >
> > > I was hoping for some guidance on a type of relay with perhaps lower than
> > > usual coil power consumption. I'll likely use an independent power supply
> > > just for the relays and timer circuit, so the smaller, the better.
> > >
>
> > ** Ebay has dozens of PCB speaker relays like this:
>
> > https://www.ebay.com.au/itm/184557057878?hash=item2af8753756:g:0FgAAOSw4-RfwhMF
>
>
> > Omron relays are high quality and these seem to be double pole from the pic.
>
> > Just add a 15VAC tranny with 2 or 3VA capacity.

> Don't want speaker protection.

** This is exactly what you asked for above.
Time delay at switch on with DC offset inhibit.
Same as any amp sold that has speaker relays.

> Just the relay.

** No good on its own - fuckhead.

And 'your' one appears to use Omrin, by the ad.

** Look at the pics you lazy moron.

....... Phil

Re: Speaker relay.

<597c3ed8ccnoise@audiomisc.co.uk>

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From: noi...@audiomisc.co.uk (Jim Lesurf)
Subject: Re: Speaker relay.
Newsgroups: uk.rec.audio
Date: Sat, 16 Oct 2021 10:37:08 +0100
Message-ID: <597c3ed8ccnoise@audiomisc.co.uk>
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 by: Jim Lesurf - Sat, 16 Oct 2021 09:37 UTC

In article <597bd7e6b4dave@davenoise.co.uk>, Dave Plowman (News)
<dave@davenoise.co.uk> wrote:
> In article <597ab1d388noise@audiomisc.co.uk>, Jim Lesurf
> <noise@audiomisc.co.uk> wrote:
> > In article <597a33befbdave@davenoise.co.uk>, Dave Plowman (News)
> > <dave@davenoise.co.uk> wrote:

> > > > .. And I wired across the relays in my amps, anyway. :-)

> > > What did you do with the other connections between amp and speakers?
> > > ;-)

> > Not sure what you have in mind. For my 700 amps I never use the
> > headphone sockets. The 600 has ye olde switch in its socket, but
> > again, I've never used it.

> A relay uses contacts held together. No difference in principle from a
> screw connection (or plug) used on amp output and speaker input. If you
> distrust point to point contacts, you'd need to go to soldered ones. ;-)

The difference is that a relay for dodging a switch-on thump is broken and
remade during every power off-on cycle. Another difference may be that it
is connected when some voltage difference may remain. Matter of
circumstances if that is the case - may 'clean' the contact or 'dirty' it.

So not the same as something like a continued contact that remaind under
contact pressure all the time.

> > TBH I never bothered with worrying about a switch-on thump. If you
> > choose speakers and amp to work together its not likely to do harm,
> > just make some listeners worry needlessly. I tend to regard it as
> > confirmation that the amp came on. 8-]

> Not really keen on 'it doesn't worry me' type of answer. I could say the
> same about hiss or gross distortion from an amp. After all plenty don't
> seem worried about such things.

You hear hiss or disortion thoughout replay. Any thump is a transient that
doesn't keep happening whilst you listen for a long period.

Whereas the distortion may be *caused* by a contact degraded by being used
many times to dodge a 'thump'.

So again, you may be comparing apples with oranges.

That said, if you're making the amp for yourself, any reasonably rated
relay will probably work fine for some time. So after a few years you can
decide to replace it should it start misbehaving.

if you're making amps for retail, though, the situation is different.
Particularly if you're aiming to have them reliable for decades, when used
by the public who won't expect to DIY a repair and expect it to 'just work'
forever. Given that, my choice was to omit the components that weren't
really needed and might be a service call source later on, annoying
customers.

> I was hoping for some guidance on a type of relay with perhaps lower
> than usual coil power consumption. I'll likely use an independent power
> supply just for the relays and timer circuit, so the smaller, the better.

As I explained, I know essentially nothing about currently available
relays, so can't advise. The printed specs may simply not let you know how
reliable they are in the context here.

Jim

--
Please use the address on the audiomisc page if you wish to email me.
Electronics https://www.st-andrews.ac.uk/~www_pa/Scots_Guide/intro/electron.htm
biog http://jcgl.orpheusweb.co.uk/history/ups_and_downs.html
Audio Misc http://www.audiomisc.co.uk/index.html

Re: Speaker relay.

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From: bob...@sick-of-spam.invalid (Bob Latham)
Newsgroups: uk.rec.audio
Subject: Re: Speaker relay.
Date: Sun, 17 Oct 2021 10:41:45 +0100
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 by: Bob Latham - Sun, 17 Oct 2021 09:41 UTC

In article <597c3ed8ccnoise@audiomisc.co.uk>,
Jim Lesurf <noise@audiomisc.co.uk> wrote:
> In article <597bd7e6b4dave@davenoise.co.uk>, Dave Plowman (News)
> <dave@davenoise.co.uk> wrote:

> > A relay uses contacts held together. No difference in principle
> > from a screw connection (or plug) used on amp output and speaker
> > input. If you distrust point to point contacts, you'd need to go
> > to soldered ones. ;-)

> The difference is that a relay for dodging a switch-on thump is
> broken and remade during every power off-on cycle. Another
> difference may be that it is connected when some voltage difference
> may remain. Matter of circumstances if that is the case - may
> 'clean' the contact or 'dirty' it.

> So not the same as something like a continued contact that remaind
> under contact pressure all the time.

+1

Also a relay has a tiny spot contact that isn't under considerable
pressure unless you use a contactor or something like that.

A banana plug has considerable wipe action when inserted and a large
contact area and maybe, quite a bit of pressure.

[Snip]

> That said, if you're making the amp for yourself, any reasonably
> rated relay will probably work fine for some time. So after a few
> years you can decide to replace it should it start misbehaving.

Seems to me a relay from a car as suggested would be good choice or
you could use the relay used by Arcam in their amps as I suggested a
while back. Yes 24v but you said that wasn't a issue.

I got 14 years out of the worst 1 of 7 before piano music started to
sound odd.

I refer you again..

https://uk.farnell.com/omron/g2r-1-e-24dc/relay-spdt-250vac-30vdc-16a/dp/9949429?ost=994-9429

https://uk.rs-online.com/web/p/non-latching-relays/0366300/

They are 24v 1.1Kohms so 22mA.
The Arcam P7 is claimed to be ~180W /channel.

Bob.

Re: Speaker relay.

<597ccc2d15dave@davenoise.co.uk>

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From: dav...@davenoise.co.uk (Dave Plowman (News))
Newsgroups: uk.rec.audio
Subject: Re: Speaker relay.
Date: Sun, 17 Oct 2021 12:20:52 +0100
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 by: Dave Plowman (News) - Sun, 17 Oct 2021 11:20 UTC

In article <6b9512ba-aca8-420f-b804-d6ac45623d34n@googlegroups.com>,
Phil Allison <pallison49@gmail.com> wrote:
> Dave Plowman (Luatic Pom) News) wrote:
> ====================================
> > > >
> > > > I was hoping for some guidance on a type of relay with perhaps lower than
> > > > usual coil power consumption. I'll likely use an independent power supply
> > > > just for the relays and timer circuit, so the smaller, the better.
> > > >
> >
> > > ** Ebay has dozens of PCB speaker relays like this:
> >
> > > https://www.ebay.com.au/itm/184557057878?hash=item2af8753756:g:0FgAAOSw4-RfwhMF
> >
> >
> > > Omron relays are high quality and these seem to be double pole from the pic.
> >
> > > Just add a 15VAC tranny with 2 or 3VA capacity.

> > Don't want speaker protection.

> ** This is exactly what you asked for above.
> Time delay at switch on with DC offset inhibit.
> Same as any amp sold that has speaker relays.

Speaker protection will switch the relay off it it detects a fault (like
high DC present. I never asked for that. All I need is a simple delay
circuit. To allow everything to stabilise before the speakers are
connected.

> > Just the relay.

> ** No good on its own - fuckhead.

Who said it was?

> And 'your' one appears to use Omrin, by the ad.

> ** Look at the pics you lazy moron.

Since you obviously don't have a clue what would be the best relay for my
purpose, why bother posting?

> ...... Phil

--
*And don't start a sentence with a conjunction *

Dave Plowman dave@davenoise.co.uk London SW
To e-mail, change noise into sound.

Re: Speaker relay.

<597cccdafcdave@davenoise.co.uk>

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From: dav...@davenoise.co.uk (Dave Plowman (News))
Newsgroups: uk.rec.audio
Subject: Re: Speaker relay.
Date: Sun, 17 Oct 2021 12:28:17 +0100
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 by: Dave Plowman (News) - Sun, 17 Oct 2021 11:28 UTC

In article <597cc31b15bob@sick-of-spam.invalid>,
Bob Latham <bob@sick-of-spam.invalid> wrote:
> In article <597c3ed8ccnoise@audiomisc.co.uk>,
> Jim Lesurf <noise@audiomisc.co.uk> wrote:
> > In article <597bd7e6b4dave@davenoise.co.uk>, Dave Plowman (News)
> > <dave@davenoise.co.uk> wrote:

> > > A relay uses contacts held together. No difference in principle
> > > from a screw connection (or plug) used on amp output and speaker
> > > input. If you distrust point to point contacts, you'd need to go
> > > to soldered ones. ;-)

> > The difference is that a relay for dodging a switch-on thump is
> > broken and remade during every power off-on cycle. Another
> > difference may be that it is connected when some voltage difference
> > may remain. Matter of circumstances if that is the case - may
> > 'clean' the contact or 'dirty' it.

> > So not the same as something like a continued contact that remaind
> > under contact pressure all the time.

> +1

> Also a relay has a tiny spot contact that isn't under considerable
> pressure unless you use a contactor or something like that.

How big the contact area is in a relay depends on its spec. As does the
material used.

> A banana plug has considerable wipe action when inserted and a large
> contact area and maybe, quite a bit of pressure.

Wish there was a plug and socket that never gave problems. If you work in
broadcast audio, you'd be aware such a thing doesn't exist.

> [Snip]

> > That said, if you're making the amp for yourself, any reasonably
> > rated relay will probably work fine for some time. So after a few
> > years you can decide to replace it should it start misbehaving.

> Seems to me a relay from a car as suggested would be good choice or
> you could use the relay used by Arcam in their amps as I suggested a
> while back. Yes 24v but you said that wasn't a issue.

> I got 14 years out of the worst 1 of 7 before piano music started to
> sound odd.

> I refer you again..

> https://uk.farnell.com/omron/g2r-1-e-24dc/relay-spdt-250vac-30vdc-16a/dp/9949429?ost=994-9429

> https://uk.rs-online.com/web/p/non-latching-relays/0366300/

> They are 24v 1.1Kohms so 22mA.
> The Arcam P7 is claimed to be ~180W /channel.

You're quite likely on an old amp to have problems with switchgear, edge
connectors, etc, too.

--
*Two wrongs are only the beginning *

Dave Plowman dave@davenoise.co.uk London SW
To e-mail, change noise into sound.

Re: Speaker relay.

<616c0b30.11798937@news.eternal-september.org>

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From: spa...@spam.com (Don Pearce)
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Subject: Re: Speaker relay.
Date: Sun, 17 Oct 2021 11:38:57 GMT
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 by: Don Pearce - Sun, 17 Oct 2021 11:38 UTC

On Sun, 17 Oct 2021 12:28:17 +0100, "Dave Plowman (News)"
<dave@davenoise.co.uk> wrote:

>You're quite likely on an old amp to have problems with switchgear, edge
>connectors, etc, too.
>
>--
It's amazing how many problems can be fixed by giving everything a
wiggle.

d

--
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus

Re: Speaker relay.

<597cd2a9a5bob@sick-of-spam.invalid>

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From: bob...@sick-of-spam.invalid (Bob Latham)
Newsgroups: uk.rec.audio
Subject: Re: Speaker relay.
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 by: Bob Latham - Sun, 17 Oct 2021 12:31 UTC

In article <597cccdafcdave@davenoise.co.uk>,
Dave Plowman (News) <dave@davenoise.co.uk> wrote:
> In article <597cc31b15bob@sick-of-spam.invalid>,
> Bob Latham <bob@sick-of-spam.invalid> wrote:
> > In article <597c3ed8ccnoise@audiomisc.co.uk>,
> > Jim Lesurf <noise@audiomisc.co.uk> wrote:
> > > In article <597bd7e6b4dave@davenoise.co.uk>, Dave Plowman (News)
> > > <dave@davenoise.co.uk> wrote:

> > > > A relay uses contacts held together. No difference in principle
> > > > from a screw connection (or plug) used on amp output and speaker
> > > > input. If you distrust point to point contacts, you'd need to go
> > > > to soldered ones. ;-)

> > > The difference is that a relay for dodging a switch-on thump is
> > > broken and remade during every power off-on cycle. Another
> > > difference may be that it is connected when some voltage difference
> > > may remain. Matter of circumstances if that is the case - may
> > > 'clean' the contact or 'dirty' it.

> > > So not the same as something like a continued contact that remaind
> > > under contact pressure all the time.

> > +1

> > Also a relay has a tiny spot contact that isn't under
> > considerable pressure unless you use a contactor or something
> > like that.

> How big the contact area is in a relay depends on its spec. As does
> the material used.

> > A banana plug has considerable wipe action when inserted and a
> > large contact area and maybe, quite a bit of pressure.

> Wish there was a plug and socket that never gave problems. If you
> work in broadcast audio, you'd be aware such a thing doesn't exist.

> > [Snip]

> > > That said, if you're making the amp for yourself, any
> > > reasonably rated relay will probably work fine for some time.
> > > So after a few years you can decide to replace it should it
> > > start misbehaving.

> > Seems to me a relay from a car as suggested would be good choice
> > or you could use the relay used by Arcam in their amps as I
> > suggested a while back. Yes 24v but you said that wasn't a issue.

> > I got 14 years out of the worst 1 of 7 before piano music started
> > to sound odd.

> > I refer you again..

> > https://uk.farnell.com/omron/g2r-1-e-24dc/relay-spdt-250vac-30vdc-16a/dp/9949429?ost=994-9429

> > https://uk.rs-online.com/web/p/non-latching-relays/0366300/

> > They are 24v 1.1Kohms so 22mA. The Arcam P7 is claimed to be
> > ~180W /channel.

> You're quite likely on an old amp to have problems with switchgear,
> edge connectors, etc, too.

Seems you're more interested in trying to criticise than in finding a
relay.

Noted.

Bob.

Re: Speaker relay.

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Subject: Re: Speaker relay.
From: palliso...@gmail.com (Phil Allison)
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 by: Phil Allison - Sun, 17 Oct 2021 20:34 UTC

Dave Plowman (Lunatic Pom) News) wrote:
====================================
> >
> > > > > I was hoping for some guidance on a type of relay with perhaps lower than
> > > > > usual coil power consumption. I'll likely use an independent power supply
> > > > > just for the relays and timer circuit, so the smaller, the better.
> > > > >
> > >
> > > > ** Ebay has dozens of PCB speaker relays like this:
> > >
> > > > https://www.ebay.com.au/itm/184557057878?hash=item2af8753756:g:0FgAAOSw4-RfwhMF
> > >
> > >
> > > > Omron relays are high quality and these seem to be double pole from the pic.
> > >
> > > > Just add a 15VAC tranny with 2 or 3VA capacity.
>
> > > Don't want speaker protection.
>
> > ** This is exactly what you asked for above.
> > Time delay at switch on with DC offset inhibit.
> > Same as any amp sold that has speaker relays.
>
> Speaker protection will switch the relay off it it detects a fault (like
> high DC present.

** DC inhibit is there to STOP the relay closing after switch on if the amp output does not settle .

> I never asked for that. All I need is a simple delay
> circuit. To allow everything to stabilise before the speakers are
> connected.

** Be mad not to include that feature - FUCKWIT

> > > Just the relay.
>
> > ** No good on its own - fuckhead.
>
> Who said it was?

** Yawnnnnnnnnnnnnnnnnnnn....

> > And 'your' one appears to use Omrin, by the ad.
>
> > ** Look at the pics you lazy moron.
>
> Since you obviously don't have a clue what would be the best relay for my
> purpose, why bother posting?
>

** There simply is no "best relay" - that is your wild, bullshit assumption.

Get Covid and die you pig.

....... Phil

Re: Speaker relay.

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From: dav...@davenoise.co.uk (Dave Plowman (News))
Newsgroups: uk.rec.audio
Subject: Re: Speaker relay.
Date: Mon, 18 Oct 2021 11:21:59 +0100
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 by: Dave Plowman (News) - Mon, 18 Oct 2021 10:21 UTC

In article <62b8da8f-a3d6-4525-89f6-e9880700dae1n@googlegroups.com>,
Phil Allison <pallison49@gmail.com> wrote:
> There simply is no "best relay" - that is your wild, bullshit
> assumption.

Ok. If no best, than any will do. You prat.

--
*Why can't women put on mascara with their mouth closed?

Dave Plowman dave@davenoise.co.uk London SW
To e-mail, change noise into sound.

Re: Speaker relay.

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Subject: Re: Speaker relay.
From: palliso...@gmail.com (Phil Allison)
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 by: Phil Allison - Mon, 18 Oct 2021 21:49 UTC

Dave Plowman (Pommy Cunthead) wrote:
==============================
>
> Phil Allison <palli...@gmail.com> wrote:
>
> > There simply is no "best relay" - that is your wild, bullshit
> > assumption.
>
> Ok. If no best, than any will do.

** Ridiculous non sequitur.

> You prat.

** Recognisng simple facts is way beyond this vile moron's maggot infested brain.

...... Phil

Re: Speaker relay.

<597eeb4b5fdave@davenoise.co.uk>

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From: dav...@davenoise.co.uk (Dave Plowman (News))
Newsgroups: uk.rec.audio
Subject: Re: Speaker relay.
Date: Thu, 21 Oct 2021 15:13:08 +0100
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 by: Dave Plowman (News) - Thu, 21 Oct 2021 14:13 UTC

In article <8a15c654-a41c-43b0-a6a6-22b958ec4513n@googlegroups.com>,
Phil Allison <pallison49@gmail.com> wrote:
> Dave Plowman (Pommy Cunthead) wrote:
> ==============================
> >
> > Phil Allison <palli...@gmail.com> wrote:
> >
> > > There simply is no "best relay" - that is your wild, bullshit
> > > assumption.
> >
> > Ok. If no best, than any will do.

> ** Ridiculous non sequitur.

> > You prat.

> ** Recognisng simple facts is way beyond this vile moron's maggot infested brain.

And answering the simplest of questions totally beyond your warped little
mind.

--
*A conclusion is the place where you got tired of thinking *

Dave Plowman dave@davenoise.co.uk London SW
To e-mail, change noise into sound.

Re: Speaker relay.

<453b224a-6ec3-49a1-ad58-c5a306c73fabn@googlegroups.com>

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Subject: Re: Speaker relay.
From: palliso...@gmail.com (Phil Allison)
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 by: Phil Allison - Fri, 22 Oct 2021 00:47 UTC

Dave Plowman (Pommy Cunthead) wrote:
==============================
>> >
> > > Phil Allison <palli...@gmail.com> wrote:
> > >
> > > > There simply is no "best relay" - that is your wild, bullshit
> > > > assumption.
> > >
> > > Ok. If no best, than any will do.
>
> > ** Ridiculous non sequitur.
>
> > > You prat.
>
> > ** Recognisng simple facts is way beyond this vile moron's maggot infested brain.
>
> And answering the simplest of questions
>

** Yours was a * bullshit* question based on a false assumption.

Anyhow - TW answered your idiot Q long ago.


....... Phil

Re: Speaker relay.

<597f592c77dave@davenoise.co.uk>

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From: dav...@davenoise.co.uk (Dave Plowman (News))
Newsgroups: uk.rec.audio
Subject: Re: Speaker relay.
Date: Fri, 22 Oct 2021 11:13:18 +0100
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 by: Dave Plowman (News) - Fri, 22 Oct 2021 10:13 UTC

In article <453b224a-6ec3-49a1-ad58-c5a306c73fabn@googlegroups.com>,
Phil Allison <pallison49@gmail.com> wrote:
> Dave Plowman (Pommy Cunthead) wrote:
> ==============================
> >> >
> > > > Phil Allison <palli...@gmail.com> wrote:
> > > >
> > > > > There simply is no "best relay" - that is your wild, bullshit
> > > > > assumption.
> > > >
> > > > Ok. If no best, than any will do.
> >
> > > ** Ridiculous non sequitur.
> >
> > > > You prat.
> >
> > > ** Recognisng simple facts is way beyond this vile moron's maggot infested brain.
> >
> > And answering the simplest of questions
> >

> ** Yours was a * bullshit* question based on a false assumption.

> Anyhow - TW answered your idiot Q long ago.

>
Just wondering why you spend so much time replying to what you consider an
idiot question. Must make you a special kind of idiot.

Even more so when you don't know the answer.

--
*There's two theories to arguing with a woman. Neither one works *

Dave Plowman dave@davenoise.co.uk London SW
To e-mail, change noise into sound.

Re: Speaker relay.

<6172a938.15476375@news.eternal-september.org>

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From: spa...@spam.com (Don Pearce)
Newsgroups: uk.rec.audio
Subject: Re: Speaker relay.
Date: Fri, 22 Oct 2021 12:09:48 GMT
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 by: Don Pearce - Fri, 22 Oct 2021 12:09 UTC

On Fri, 22 Oct 2021 11:13:18 +0100, "Dave Plowman (News)"
<dave@davenoise.co.uk> wrote:

>In article <453b224a-6ec3-49a1-ad58-c5a306c73fabn@googlegroups.com>,
> Phil Allison <pallison49@gmail.com> wrote:
>> Dave Plowman (Pommy Cunthead) wrote:
>> ==============================
>> >> >
>> > > > Phil Allison <palli...@gmail.com> wrote:
>> > > >
>> > > > > There simply is no "best relay" - that is your wild, bullshit
>> > > > > assumption.
>> > > >
>> > > > Ok. If no best, than any will do.
>> >
>> > > ** Ridiculous non sequitur.
>> >
>> > > > You prat.
>> >
>> > > ** Recognisng simple facts is way beyond this vile moron's maggot infested brain.
>> >
>> > And answering the simplest of questions
>> >
>
>> ** Yours was a * bullshit* question based on a false assumption.
>
>> Anyhow - TW answered your idiot Q long ago.
>
>>
>Just wondering why you spend so much time replying to what you consider an
>idiot question. Must make you a special kind of idiot.
>
>Even more so when you don't know the answer.

Toaster Repair Man from Summer Hill has literally nothing else to do.
He sits in his miserable bed sit looking at the world and trying to
figure out why everyone else is out there living real lives.
Of course he will never know the answer because the fact that it is
his own fault will not appear on the answer list. It has to be anyone
else, and of course we all do figure on that list.

d

--
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus

Re: Speaker relay.

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From: ton...@bancom.co.uk (tony sayer)
Newsgroups: uk.rec.audio
Subject: Re: Speaker relay.
Date: Fri, 22 Oct 2021 18:11:29 +0100
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 by: tony sayer - Fri, 22 Oct 2021 17:11 UTC

>> That said, if you're making the amp for yourself, any reasonably
>> rated relay will probably work fine for some time. So after a few
>> years you can decide to replace it should it start misbehaving.
>
>Seems to me a relay from a car as suggested would be good choice or
>you could use the relay used by Arcam in their amps as I suggested a
>while back. Yes 24v but you said that wasn't a issue.
>
>I got 14 years out of the worst 1 of 7 before piano music started to
>sound odd.
>
>I refer you again..
>
>https://uk.farnell.com/omron/g2r-1-e-24dc/relay-spdt-250vac-30vdc-
>16a/dp/9949429?ost=994-9429
>
>https://uk.rs-online.com/web/p/non-latching-relays/0366300/
>
>They are 24v 1.1Kohms so 22mA.
>The Arcam P7 is claimed to be ~180W /channel.
>
>Bob.
>

Must have a look in My Audiolab amps they have relays, time perhaps for
new ones and a re-capping:)

I see that the QUAD 405 Mk 1 and 2 never needed them?....

--
Tony Sayer

Man is least himself when he talks in his own person.

Give him a keyboard, and he will reveal himself.

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