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Old 17th June 2014, 09:51 PM   #1
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Default Best sounding signal level relay?

Hi all,

I'll shortly be in need of some very good sounding signal relays with these specifications:

- Good sounding i.e. preferably "no sound"/influence on the signal
- should be able to handle ~1A when connecting
- should have two "break & connects" (don't know if this is what it's called),
- low power i.e. <= 140 mW
- not too difficult to source either in Europe or at Mouser.

Might one of you know which relays are considered the best sounding - and also not too expensive - relays around?

Thanks for any insights on this you may have ;-)

Jesper
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Old 17th June 2014, 10:03 PM   #2
jcdrisc is offline jcdrisc  Australia
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Let me guess -- you are into the "sound" of cables too ???
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Old 18th June 2014, 12:20 AM   #3
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Sorry but a relay contact is a connection, period.
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Old 18th June 2014, 12:31 AM   #4
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Quote:
Originally Posted by jcdrisc View Post
Let me guess -- you are into the "sound" of cables too ???
Not to derail the thread but thank GOD there's someone here who said exactly what I would've said.

JonSnell I'd like to see a double blind test where you can repeatably tell me when there is a generic, off the shelf crap relay vs no relay at all.

Sorry about being so argumentative but this "its a connection" type thinking is why I feel ashamed to call myself an audiophile, people will get the wrong idea about me.
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Old 18th June 2014, 01:01 AM   #5
BrianL is offline BrianL  United States
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What is your application? You say 'signal relay', but 1A is a bit high for a small-signal relay. For small signals, you want a relay with specifications and contact metalurgy tailored to low-level signals. The Panasonic TX series (-1 versions) is an example. For higher power, you must be concerned about the degenerating effects of hot switching and other issues.
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Old 18th June 2014, 01:21 AM   #6
jcdrisc is offline jcdrisc  Australia
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To make a positive contribution could I suggest a low-cap reed relay made by Pickering ?
At least with that you will not face contact oxidisation longterm.
Gold plating may be an alternative
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Old 18th June 2014, 03:33 AM   #7
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Hi all,

Hmmm... thanks for your replies ... As it is I'd rather stay out of discussing whether or not relays/cables are audible but have looked into the pickering & Panasonic suggestions mentioned here ...

@BrianL: When searching the internet and also on Mouser I can find a TX2 series but no TX1s. Could it be that the TX1 is an older version - or could it be written differently?

Best regards,

Jesper
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Old 19th June 2014, 01:11 AM   #8
Bonsai is offline Bonsai  Taiwan
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I am using Panasonic AGN series and Omron G6K for small signal switching

These are

- low power
- sealed
- contacts are gold flashed

My two more recent preamps (see my website) use the Panasonic ones. I am very pleased with the performance.

(Why do you want to switch 1A? Just curious)
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Old 19th June 2014, 03:20 AM   #9
DUG is online now DUG  Canada
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Panasonic AGN series

10μA 10 mV DC

Omron G6K series

10 μA at 10 mVDC

TE Connectivity IM series

Minimum switching voltage 100μV
Initial contact resistance <50mΩ at 10mA/30mV
Thermoelectric potential <10μV

I have used Omron and TE types for our test equipment.

Signal relays and characteristics like the above are what to look for.

If a relay does not have a listing for the above characteristics I do not consider it a signal relay...but that is just me.

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Old 19th June 2014, 07:13 AM   #10
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@Bonsai & DUG:

Thanks for your input - I'll look into the Omron and panasonic relays. And then you ask what I will be using the relays for? Actually, I hesitate to say it because in strictly technical terms it should not be audible in this place (very low impedances around & ultra-low noise), however, my intuition is that it just may be so I'm considering listening to the intuition here ...

@Bonsai: I just briefly visited you hifisonix webpage and noticed that you had a post about using solid state relays for loudspeaker switching (the article is not there, though, as far as I can see?). Have you any experience with using e.g. very low RDSon Mosfets (RDSon 10 mohms) for signal level switching?

Greetings,

Jesper
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