Recent Posts

31

Tube Amp Building - Tweaks - Repairs / Re: Univox 202R Amplifier making noise

« Last post by dbishopbliss on September 10, 2026, 10:39:45 am »

Here are two more photos of the front and rear panels of the amp so you can see how things are wired.

32

Tube Amp Building - Tweaks - Repairs / Re: First amp build (5F1) would anyone mind double checking my turret board layout?

« Last post by tubeswell on September 10, 2026, 02:17:18 am »

Fender layout
(The only thing likely to be ‘different’ from this in a modern reproduction is the heater filament wiring - where most people these days run twisted AC pairs)

https://el34world.com/charts/Schematics/files/Fender/Fender_champ_5f1_layout.png

33

Tube Amp Building - Tweaks - Repairs / Re: Ampeg Jet J-12-B Clone Change

« Last post by sluckey on September 09, 2026, 09:34:59 pm »

Hey Sluckey how does this amp sound in general and with your improved tremolo mods?

I ask because I have an original 59-60 or so chassis and original cabinet missing all the guts etc that I was thinking of restoring but if it sounds like pure meh I might build something else into it instead. Let me know. Thanks

The amp has a nice warm tone and sounds like an old Ampeg. Perfect for my radio conversion. It would sound much bigger with a proper speaker. If I had the stuff you have I'd definitely restore it. Do you have some pics of your chassis and cab?

34

Tube Amp Building - Tweaks - Repairs / Re: Ampeg Jet J-12-B Clone Change

« Last post by nastyoldtech on September 09, 2026, 08:28:10 pm »

I built one a few years ago. Trem works OK but I did several mods to 'improve' it.

Necro post I know, sorry. Hey Sluckey how does this amp sound in general and with your improved tremolo mods?


I ask because I have an original 59-60 or so chassis and original cabinet missing all the guts etc that I was thinking of restoring but if it sounds like pure meh I might build something else into it instead. Let me know. Thanks

35

Video Clips / Re: Black Sabbath

« Last post by kagliostro on September 09, 2026, 02:17:42 pm »

🤣 👍👍👍

36

Video Clips / Re: Black Sabbath

« Last post by Rontone on September 09, 2026, 11:25:29 am »

There's a whole load more of them here:-

https://www.youtube.com/@TheUnderdogsShow/videos

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Video Clips / Black Sabbath

« Last post by kagliostro on September 09, 2026, 10:19:07 am »

https://www.facebook.com/reel/1392070002292371/

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Tube Amp Building - Tweaks - Repairs / Re: First amp build (5F1) would anyone mind double checking my turret board layout?

« Last post by JPK on September 09, 2026, 08:31:49 am »

More nit picky but I'd re-install the 10k resistor on the center of the eyelets like the 22k. Removing it in the future would be very difficult buried under the leads of the two caps. Plus I'm OCD and like things to line up so they look clean. The 2 68k's I'd create a little air gap between them so they don't transfer heat, better cooling. It was mentioned earlier to create gaps around components. I always try to avoid them touching if possible. It's not always possible, but it is in your case.

39

Other Topics / Re: Meme of the day

« Last post by shooter on September 09, 2026, 07:40:05 am »

...

40

Tube Amp Building - Tweaks - Repairs / Re: Laney Klipp "Fuzz" circuit

« Last post by Balticnoiseforge on September 09, 2026, 12:01:13 am »

I just stumbled on this Klipp circuit today in the Faustone pedal. I'm currently trying to wrap my head around it. The "blend" control seems to blend out of phase signals and the original Laney amp seems to further confuse this by mixing two out of phase preamp signals together if both inputs are bridged. That doesn't seem right, so am I looking at this schematic correctly? You ever mess with building something like this? I may have to build it myself just to answer a few questions.

This is a old thread, but yeah i built one some years ago and it worked fine.

First stage is just the standard input, then you can blend in the other, The whole "klipp fuzz" circuit Is a cathode follower driving a Grounded-grid topology, it makes more sense when you see the voltages, vdc for the plate is around 80vdc which gives that compressed fuzzy sound.