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Hi, I recently purchased a Radial X-Amp with high hopes on reamping.

I connect my X-Amp to the guitar amp and no noise... all is good,
then when I plug into the X-Amp's input from the Fireface's out (TRS>XLR) I get huge hum noise.
Thats when the ground lift is engaged, when its not it sounds like a jet engine.

Remember that this when I connect the X-Amp to the Fireface and no recorded DI's or DAW's are involved.

Any ideas?, I really want to get going with Reamping!

Comments

HaHallur Mon, 12/20/2010 - 08:23

I've tried adjusting the output level on the fireface and the X-amp.

The output level on the fireface has no effect on the hum, but the output on the X-Amp will of course lower the hum, still you need it at least half way up to get a decent signal into your amp.

I haven't tried other cable because I don't have them :)

I'll try it in another house tomorrow, wish me luck!

Link555 Wed, 12/22/2010 - 06:13

lol- theres nothing wrong with that chip for this application....

Thanks for the pics!

Well we now know its not passive.....

I would think he would not be using a tantalum cap for the ground lift circuit.
The one closest to the XLR connector would be my guess, maybe the poly brown guy.

From what I see in the pictures nothing is obviously damaged.

Is it true that you 220V 50 Hz system for everything but this unit?

HaHallur Wed, 12/22/2010 - 09:19

Yeah I've got a big converter for the 120V amp, I've plugged the stuff into the same outlet source, which didn't make a difference.

On other news, I tried using output B on the X-Amp and engaged the side ground lift of the X-amp, wouldn't you know it, all the hum was gone.
Still when I plug into Out A the hum comes back, I'll live with this for now.