Hi to everyone,
Does anyone have the circuit board for the power supply for the Penultimate Zen?
Thank you
Does anyone have the circuit board for the power supply for the Penultimate Zen?
Thank you
They are on sale at www.passdiy.com ... alternately, the pattern is in the pdf file and you can use this to make your own boards.
I don't think there is a power supply board or that it needs one. You just bolt the bridge rectifier, the capacitor and the transformer to the chassis.
Oops sorry about that, I misread the original post. Yes, you do not need a power supply PCB for the Zen.
Is there any way to increase the gain of zen4 amp up to 10 or so without affecting sonic performance ?
Not really. You can increase the gain, but there is a zero-sum situation
between gain and feedback, so with more gain, there is also more distortion.
between gain and feedback, so with more gain, there is also more distortion.
Dear mr.Pass,
Lowering the values of R2/R3 reduces distortion at the top end.
I can accept 10k input impedance, should I try to lower these resistors with zvp3310 to reduce distortion?
Lowering the values of R2/R3 reduces distortion at the top end.
I can accept 10k input impedance, should I try to lower these resistors with zvp3310 to reduce distortion?
FWIW: I use a ZEN V4 with 10 K input resistance and 47 K feedback || 22 pF (and with BS250 instead of ZVP....) and it works just fine. I don't have the schematics in front of me so not sure if they are R2/R3.
From what I remember this mostly increases the BW in the buffer stage and hence the overall circuit.
From what I remember this mostly increases the BW in the buffer stage and hence the overall circuit.
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