Best Audio Relays

[JKoch]

I forgot to add:
- Contact material: Ruthenium

 

[jackinnj]

Got a box of Teledyne 712 relays from a ham radio operator:

 

[JKoch]

Hi

What is a Vcoil and price for one pc.? How much you have to sell because I need min 16 pcs + few as spare parts.

 

[jackinnj]

You wouldn't want them -- some have the incorporated transistor, various coil impedance. and not enough to go around.

I can send a tube of Huigang HRS2H-S-DC5V to Gdansk. PM if interested -- very inexpensive and just gathering dust here. (Farnell charges $2.00 each).

http://www.farnell.com/datasheets/296895.pdf

 

[Art M]

For small signal duty we need to take into consideration the Dry contact rating.
Lots of relays don't specify this on the data sheet, because they can't.

 

[cliffforrest]

I have quite a few of these, some could be for sale.

Same technology as you quote, but NOS. 3 pole (can switch L+R+Ground!) They will stack on a 0,2" pitch. 5V coils.

PM me if interested. I could send you a sample.

Cliff

 

[cliffforrest]

For small signal duty we need to take into consideration the Dry contact rating.
Lots of relays don't specify this on the data sheet, because they can't.

These reeds are used by the billion in ATE systems for cold switching of sub uV signals.

 

[AndrewT]

I see one question:
yes, this Thread is not closed so it is still active.

 

[JKoch]

I need to switch inputs in my preamp but I need as highest quality contacts/relays as possible. Writing "highest quality" I have on my mind the quality of final sound: I want to find relays which will be nearly not audible. In this thread were mentioned such relays as:
- Coto 8L Reed/Spartan
- Teledyne 712 (TO-5)
- Coto 2200 Reed
- Omron G6A-BS
- Omron G6K
- Omron G6L
- TE Connectivity RT-2
- Panasonic SX-ASX
- Panasonic TQ2
and I consider to use Coto Technology 9814-9852 Reed Series relay.

But I have not still chosen any of above. Maybe there are other suggestions?

 

[JKoch]

Thank you for offer jackinnj. I need better quality devices.

 

[Art M]

Congratulations on the billion relays. You should move your sales efforts to the Swap Meet
forum. Single piece price (>$7 on Mouser) a bit rich for me. Sub uV signal handling sounds good.

 

[analog_sa]

Finalizing a new attenuator board at present and a friend who is interested in one asked me to give some mercury wetted Clares a listen.

Long (and annoying) story short - old, trusty TQ-2 in preference to Clare

 

[JKoch]

In datasheet of the SX (ASX) Panasonic is stated:
Minimum switching capacity: 10uA 1mVDC
But they are latching relays. I need non latching relays to drive them from PIC and I have no idea how to change latching to non-latching ones.

 

[cliffforrest]

Jkoch (jannes, james, john, joseph??)

Have you read post #86 ?? It could solve your problem!

Cliff

 

[JKoch]

I afraid about field of coil so I would like shielded reed relay like Coto2200-2302 or SMD 9814.

 

[cliffforrest]

Oh! OK.

I thought you wanted these for audio, not microwaves! So be it.

 

[JKoch]

Exactly, for audio.

Janusz

 

[cliffforrest]

So why do you think you need an RF relay?

You are heading for ~$10/piece.

 

[Bonsai]

A few years ago when I started this thread, I was fretting about what to use after reading all sorts of stories on this forum about 'relay sound' etc. I since built three preamps (see my website via the link in my signature below for details) and am very pleased with the results. I also built a few preamps in the 1970s and early '80's when I was young - used switches then though.

I have settled on using Panasonic AGN/AGNQ types

The main thing is the relay is sealed. I would not worry about minimum switching voltage current - this has more to with how the contacts behave after switching at full load/lifetime. Select the contact material correctly and if the relay is sealed, you will have no dirty contact issues to deal with at low sig levels either due to atmospheric contaminants or switching.

WRT emf, this arises when there is a temperature difference across a piece of wire (Seebeck effect). In a relay, the temperature deltas are low and caused mainly by heating effects from the coil. In any case, they will be small (uV or lower) and at very LF or DC.

 

[Alan0354]

Just the thread I need!!! I am looking for speaker relay. I got advice SS relays have less distortion. I need some suggestion on the brand and model. I am hoping not to build a discrete one myself.