Circuitbenders Forum

Circuitbenders Forum => Circuitbending discussion => BENDING TIPS => Topic started by: Dj Task Manager on June 25, 2011, 03:03:15 PM

Title: pre amp question...
Post by: Dj Task Manager on June 25, 2011, 03:03:15 PM

I built one of these preamps

http://www.diyguitarmods.com/guitar-preamp.php (http://www.diyguitarmods.com/guitar-preamp.php)

and it works lovely for picking up the piezo im using in a spring verb project.

I was wondering if there was a way to boost the output a little by swapping any components.

Any thoughts?

Cheerz!

Title: Re: pre amp question...
Post by: Gordonjcp on June 27, 2011, 10:49:39 AM

Try varying the 2.2k resistor in the FET source leg.  You could also try bypassing it with various values of capacitor, which will allow you to alter the frequency response a bit.