i've just finished modifying the input stage according to the diagram on mardis's site. Blackgates are still on order so I used some plain electrolytic caps rated 2.2uf 50v with 22k 1/4watt resistors. The amp plays fine for a few minutes, then it outputs heavy sputtering/distortion. Could this be due to the caps I used?
The diagram
[IMGDEAD]http://www.michael.mardis.com/sonic/images/input-sonic.jpg[/IMGDEAD]
shows the negative lead of the cap going to the resistor right? Are the blackgate c series nonpolar? Am I using the wrong type of cap?
thanks.
The diagram
[IMGDEAD]http://www.michael.mardis.com/sonic/images/input-sonic.jpg[/IMGDEAD]
shows the negative lead of the cap going to the resistor right? Are the blackgate c series nonpolar? Am I using the wrong type of cap?

thanks.