amp adjustments

[xfyre]

hey quick question:

which little screw effects the amount of bass coming through more..

the bass boost or the gain knob

and also what do the subsonic, phase and lpf screws do

[touringcamry]

Bass boost is what you're after. Gain will determine how much the signal is amplified though it's not a volume knob.

As its name suggests, subsonic filter filters subsonic frequencies. Set it to about 20-30 Hz.

LPF is low pass filter. It will pass the frequencies below that setting and attenuate those above it.