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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: RE: What I wanted was low power and high quality in a small package posted by PakProtector on January 5, 2021 at 13:03:58:
But that makes the OPT trickier, and you have to be careful about filaments for low noise, and the power supply becomes more critical. It worked out to be a bigger unit, and very likely not sounding or measuring as well.
I used the Dyna ST-70 as a bit of a standard (although I used better parts); I used the same filter capacitance values it does, along with a choke for smoothing. So the plates of the power tubes are seeing fairly clean power at the CT of the OPT, although they have some rejection of power supply noise anyway due to the differential effect. But instead of making 35 watts/channel, this amp only makes 5 so I expect the power supply has far more capability than needed. I seriously doubt I run it past even 1/2 watt.
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Follow Ups
- I probably could have gotten the power SE - Ralph 01/5/2113:45:36 01/5/21 (0)
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