Pass X2 Ps

[george a]

Hi All

I've ben looking over the schematics for the X2 pre-amp (rev 0 or 1) and assume that the power supply as indicated supplies 2 channels of X2..
I have to ask the question, transformer size aside , how many channels of X2 can that design successfully power?- easy enogh to up trafo and smoothing caps but what about the rest.?

I'm after 6 channels for a tri-amp setup with the X2 design replacing the output Op amps in a Dcx2496 DSP crossover. the problem will also be the 6 channels of precision attentuators required, I may just go for 12 steps at 3dB each + some mute switch etc.

I have enough irf610's and 9610's from my parts reserve that were to be used for a P1.7 pre.

Any comments??
Cheers and thanks in advance

 

[Nelson Pass]

The rest only consists of regulators, and you can devote
a separate regulator to each channel, so there is no
practical limit.

 

[george a]

Thanks Nelson
Much appreciated

Cheers from down under

 

[mpopovics]

100VA 2x28V secondaries???

May I run the X2 with two 100VA, 2x28V secondaries?

I think, it would be enough to do the job.
I guess only less drop on FETs, because of the less secondary voltage.

Thanks,
Milan