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HiFi (Chifi) tube amp build - but my own design.
#9

Actually, that stainless is some pretty hard stuff. It does scratch easy, but to drill, it's pretty tough.Kinda like a sink... I'd thought about a chassis punch but with the vent holes, figured I'd bend it. When I get the OP trannys in I'll drill holes to mount. I'd thought of trying it as it is with the single pentodes, but really bought them to do a hybrid using the power supply & chassis with my own amp design. I almost gave up when I measured the socket holes. Thought I could put a wafer socket under to use a pair of octals, but felt that put the chassis too close to the tube pins and might carbon track or arc. So I hogged things out. I have a pair of Warfedale 70 speakers I've been using (from Ron).

I noted with the PP amp kit I built that it really likes to clip on the heavier bass, and it seems the highs are a little dry. Could be in my preamp, (I know I need to recap and replace a couple driver trans) or I could just be punching it too hard. Anyway, even with the mods I'm doing with the kit, the 6V6 tubes would work as the kit intended if I desire to go that way. I'm doing one at a time to fiddle with things and tweak stuff until I either get it sounding like the way I want or see smoke Icon_cool . The 6V6's heaters only pull .45a, while the pentodes with the kit draw almost double. Plenty of P trans filament power, but figure less pull from the tubes would free up a little more B+ current.

Arran, I'd considered a doubler, but with things as they are, that should put my plate supply right at 300-310v, which according to the tube manual is where they like to run. I'm sure a few more volts wouldn't upset them too much.

If I could find the place called "Somewhere", I could find "Anything" Icon_confused

Tim

Jesus cried out and said, "Whoever believes in me , believes not in me but in him who sent me" John 12:44


Messages In This Thread
RE: HiFi (Chifi) tube amp build - but my own design. - by TV MAN - 10-13-2024, 08:58 PM
462ron - by 462ron - 10-15-2024, 09:07 AM



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