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In the Forum: Melquiades Amplifier
In the Thread: 6 Channel Version of Super Melquiades
Post Subject: Super Milq: trying to do it last time + caps for PS.Posted by Romy the Cat on: 12/23/2007
I was slowing mingling the conversion of the power supplied of my second Super Milq from 3 channels into 6 channels and I ask myself: is anything in that amp is made in the way that would allow me to close it up and never review it. Sure if I move in very large space then my Macondo would need more power but it will be another story as it might be a different Macondo then…
Anyhow, in the 6-channel Super Melquiades I found there is one moment that I feel might be done differently. Currently I have the single-stage amps powered anode supplies that power the Injection channel’s 6C33C. Since the Injection channel is a lot of dB down the plate voltage is very stable. Also the last cap in that supply is 15.000uF, so an extra 100mA that the 3 single-stage amps draw are not a big deal. Still, I feel it is a half ass solution I decided to change it while I am revising the amp. I do not know if the dedicated supply would make any sonic difference, I have no problem with sound of the single-stage amps as now, but it to have the single-stage amps power from own supply would be intellectually more pleasing. The most important it would keep the 6-channel Melquiades logically compile and eliminate the itch to thing about the dedicated supply in future.
So, I will be building-in (thankfully I have space and additional wire in the connector between the PS and amp) a new power supply for single-stage amps. It will be a full scale: 220V/250mA separate power transformer, Schottky full-wave bridge, LCRC filtration. I also contemplate, since the single-stage amps do not care any low frequency to make the power supplies only with film capacitors. I think it might be interesting in HF section of DSET. Does anyone know any low voltage (250V-300Volts), 100uF-300uF film capacitors? Do not propose Solens – they sound like crap. I have some 100uF Ansers but they are 650V – too big…
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