Does any member here know what the +/- DC voltage rails are supposed to be in the Stasis 2 amp? I can't find any PSU info anywhere on the www.
I did receive a DiyAudio email notification from a member on this, but he must have retracted the post straight away, as it is not here. Anyway he said +/-45VDC, now I am sure I read somewhere that it was +/-46VDC, but I can't find that info anymore, there is zero info on the www about the PSU - but as Threshold has specified the Stasis 2 as 200 watts per channel, this DC rail voltage seems too low to me - unless it has to do with the series cascade output stage utilized in this amp.
Can anyone shine some light on it thanks.
Can anyone shine some light on it thanks.
Thanks for that, I did not see that on ZM's blog. Also Jon Soderberg has also just confirmed it to be +/-72VDC nominal in an email reply.
For those interested, Jon Soderberg has also confirmed factory specs for the Stasis 2.
Bias is 85mV across the 1R0 emitter resistors.
Heatsink temp was 45 to 46 deg C max.
Dc offset with original FE board that did not have a pot but fixed resistor was +/- 50mVDC, but with Nelson's new FE board installed that has a trimpot for offset, then that should be able to be adjusted to less than +/- 10 mVDC after amp has reached thermal equilibrium at full bias.
He leaves the amp on the bench for a minimum of 6 hours to do final bias and offset tweak.
He also advises that anyone with an original FE board, should change the original single turn bias pot, to a multi turn pot.
Bias is 85mV across the 1R0 emitter resistors.
Heatsink temp was 45 to 46 deg C max.
Dc offset with original FE board that did not have a pot but fixed resistor was +/- 50mVDC, but with Nelson's new FE board installed that has a trimpot for offset, then that should be able to be adjusted to less than +/- 10 mVDC after amp has reached thermal equilibrium at full bias.
He leaves the amp on the bench for a minimum of 6 hours to do final bias and offset tweak.
He also advises that anyone with an original FE board, should change the original single turn bias pot, to a multi turn pot.