Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

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





Users browsing this thread: 8 Guest(s)
[-]
Recent Posts
Does the 20 Deluxe use photofinish?
I recently bought a can of oms and it now says Lo-odor mineral spirits. When I use citrus stripper I leave it on for...RodB — 11:09 AM
Does the 20 Deluxe use photofinish?
It's on a scale of how bad is it compared to... Naphtha, chlorine bleach, mek, and lacquer thinner it's odorless.Radioroslyn — 10:26 AM
Does the 20 Deluxe use photofinish?
Yeah, always wondered why they call them spirits "odorless". It sure enough smell like a gas station.morzh — 10:10 AM
Does the 20 Deluxe use photofinish?
I usually don't do any sanding till all the stripping is done. The veneer on the cabinet is thin and it is easy to sand ...Radioroslyn — 09:49 AM
HiFi (Chifi) tube amp build - but my own design.
As I remember it, the shock from that B+, about 250VDC, felt worse than the shocks I experienced from 220VAC.morzh — 09:14 AM
Hickok 288x
They worked for 85 years as .05's and my other machine which operated perfectly has them. Doubt thats the issue. What ty...daveone23 — 09:01 AM
462ron
LOL@ MrFixr. I remember an encounter with my first tube radio.. I think I have posted this before. Back when I knew just...462ron — 08:07 AM
HiFi (Chifi) tube amp build - but my own design.
I absolutely attribute my reaching 63 to God's benevolence, but this apart, it has never occurred to me to tap anything ...morzh — 07:55 AM
Does the 20 Deluxe use photofinish?
No, it did not use photo-finish. It is veneer with the shading on the front of changing darkness.morzh — 07:52 AM
Philco 66 No Plate Voltage
We could also mention the factory miswire of the tweeters on 38-690. Or the fact that even with this fixed, one could no...morzh — 07:51 AM

[-]
Who's Online
There are currently 3456 online users. [Complete List]
» 1 Member(s) | 3455 Guest(s)
Avatar

>