Diefet builders, i need your assistance

[347sixtyseven]

Hi guys,

I have just finished building a diefet circuit and am having a bit of trouble getting it working.

Is anyone able to post up the voltages from the IC in their Diefet?

Any assistance greatly appreciated

Cheers

Gary

[Ripthorn]

Does it work to the point before it gets to the IC?  All the IC does is provide a big low frequency boost.  I might be able to crack mine open and get some readings, but it would be a little later (after the kids are in bed).

[347sixtyseven]

Ah ok,

I haven't had an audio probe on it yet, was just checking voltages.

All i am getting is a bit of a hum when the volume is cranked. The only pot that changes the sound at all is the prescence one.

I will try and make a probe later and see what i come up with.

Q1 to 4 are biased at 4.5v Q5 is at approx 9v.

Gary