Originally Posted by chermann
from post 775
so the tpa 3250 has a gain of 26db so with this opamps config i get about 33db so its 7db more gain
is that correct?
so the volume knob- potentiometer is a voltage divider for the input and the inverted opamp has a gain about 7db....correct?
which values should i find an the pcb to get this? can some fresh brain and expert help me?
On - forum.vegalab.ru they are engaged in the Hypex UcD amplifier and write:
«Completely excluded OU as well as WG. The signal is fed directly to the modulator. Gain is enough for comfortable listening directly from the source. The input impedance is not enough, but the output buffer of the source pumps. This option is more like.» They have an input impedance of the amplifier (modulator) of 10 kom, the TPA3250 has a resistance of 24 k per channel. Or 12kom with two channels connected in parallel.