Help With A Schematic

Nov 16, 2005 6 Replies

I've just completed this device and it does what it's supposed to(distort a guitars output signal) but has no gain... Can anyone help me try and get more gain out of this pig? Perhaps change some of the devices values...add pots? Who knows I don't... see this hyperlink to view the schematic (

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Thanks


Bill



What transistors are you using?

Ross

Start by lowering the 4.7k a bit

Lower it to what value ?

Bill

I have no experience with guitar effects, so I need to ask what is the impedance of the source driving this circuit?

You might try increasing the 22k to 47k or 68k to see if that makes a difference. You should also check very carefully that you built it right.

regards, Johnny.

On 15 Nov 2005 20:15:49 -0800, "william snipped-for-privacy@comcast.net" put finger to keyboard and composed:

The first thing I would do is to verify your construction by taking some DC bias measurements with the input shorted to ground. I'd expect a voltage of 2.1V at the collector of the first transistor, for example.

-- Franc Zabkar

Please remove one 'i' from my address when replying by email.

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