Tube amp inactivity auto-off

[Ripcord]

Are there any inactivity auto-off solutions for a small flea power tube amp?

 

[rayma]

Are there any inactivity auto-off solutions for a small flea power tube amp?

You could probably adapt this: Project 38

 

[Ripcord]

Yeah, ok, that looks good. I'll read up. Thanks.

 

[rayma]

Yeah, ok, that looks good. I'll read up. Thanks.

That's pretty much how you have to do it. It monitors the audio before the power amp.

 

[tomchr]

The only issue is with tracks that start out soft and slowly build up. Then the amp will turn on half-way through the crescendo.

Tom

 

[Ripcord]

I built a small flea power tube amp for my daughter and I'm worried about it getting left on when were both gone, (it's in her room).
tomchr,
Is there a work around for the quite passages?

 

[rayma]

Is there a work around for the quite passages?

Just make the turn-off delay longer.

 

[Miles Prower]

I had a similar problem for a project. Here's the solution I devised. How you'd actually implement it would depend on the delay you need. To increase it, add more decade counters. That way, you wouldn't need to worry about quiet/silent intervals in the program material.