DOUT and audio switching relays

[EsotericLabs]

Hello!

I found this nice lil' schematic  on the web http://solderintheveins.co.uk/2009/12/simple-audio-switch/     I guess our beloved DOUT would do the job for driving this. Am I correct?

 

 

[Zam]

Hi

Yes, no problem to drive a relay with transistor switching at Dout, but keep in mind relay will produce a clic at audio side, so it depend of the application.

Best

Zam

 

[EsotericLabs]

thnx again Zam, guess its worth trying! There are special line level audio switching  delays, see this thread https://www.gearslutz.com/board/geekslutz-forum/655766-how-choose-relay-audio-switching.html

Might be good fun to put some in my SEQ-in-progress..

Edited February 2, 2016 by EsotericLabs

[Zam]

I try it, for low internal level, mixing desk, mute function, usable for mix/repro operation, but not for automation at mixdown. I don't valid this after evaluation. So it's simple, if it's for monitor or "off" record function relay are fine and easy

Best

Zam

[EsotericLabs]

yes i also want them mainly for audio routing not mixing.

[Zam]

Should be fine then

Best

Zam

[AVLG]

Hello EsotericLabs!

Actually you don't even need DOUT, I'm driving relay modules right from J10B pins on my CORE_STM32F4. These relay modules are really cheap, 1 euro from AliExpress, have LED indicator, powered by 5V, draw <70ma in ON state, can switch up to 10A at 230V (yep, how about MIDIfying your coffee machine? ;) ) but the relay have only SPDT contact group, means you need 2 relay modules to switch stereo signal.

For switching audio signals I'd also consider using 4051/4052/4053 analog multiplexer ICs dependig on the audio routing configuration needed, or Vishay DG201/408/409 for higher voltages found in modular synths.

Edited February 3, 2016 by AVLG
typo

[EsotericLabs]

Thank you!  I will certainly midify my coffee machine and the on/of of my mixer for nice stutter effect.

And take a look at them multiplier IC's.