Hi audiguru thanks for your comments.
Yes in the amp kit it was fed from both channels,again I missed that coupling part in my drawing.
Now I corrected.
It is fed from two 4.7K.Note that C4 capacitor is 104.
Today I'll increase the gain in the first amp in sub section.But even now (didn't increase the gain yet) I cannot put the bass level half way mark its plenty of bass.
I noticed the LM1875 subwoofer amplifier (not mentioned in the drawing) has set the gain to 70.Its feedback resister is 39K & the resistor goes to ground is 560R.
(39k/560R)+1 = 70.Is this too much!!
Yes in the amp kit it was fed from both channels,again I missed that coupling part in my drawing.
Now I corrected.
It is fed from two 4.7K.Note that C4 capacitor is 104.
Today I'll increase the gain in the first amp in sub section.But even now (didn't increase the gain yet) I cannot put the bass level half way mark its plenty of bass.
I noticed the LM1875 subwoofer amplifier (not mentioned in the drawing) has set the gain to 70.Its feedback resister is 39K & the resistor goes to ground is 560R.
(39k/560R)+1 = 70.Is this too much!!
Last edited: