The Amp Garage

Same speakers live. Scumbacks. I'd like to try their PVC versions at some point. I should mention that I'm really liking the new Celestion Creamback G12Ms in a couple of Fender combos. That said I have not tried them yet with a TW but I bet they will work very well. PVC for the basket? Oh.. :shock:...

Hi,
I tried the WGS ET65 Creamback with Express and Liverpool derivate and was very satisfied. So with "original" Celestions I should be even more there, but that's a question of monetas.
Its a good full sound.

Hans-Jörg

ok, but that's not the fault of the PT. You have to find the "wound" before you heal. That means: reorganize your PS chain (40/20/20/10 is a good start, the right amount of Ohms between :wink: ) and kill all connections with the tremolo circuit before measuring. This are my experience. Hans-Jörg PS:...

Hello,

I´m quiet sure you don't need a higher mA rating with the PT.
120 mA for 2 EL84, 1 EZ 81, 2 ecc83 is the common rating for PT. With 150 mA you are more than in game, which don´t hurts

Best,
Hans-Jörg

I would drop that 68k to 1.5-4.7k ish for starters and revisit this whole exercise. TM I agree, the 68k are way too high at this poit. I would also disconnect the whole tremolo circuit, not only the wiper from depth. anode, grid and cathode from the tube pins away. The amp should work without any t...

Hi, do you have the possibility to swap all caps of PS? Or at least to measure them, same the resistors. I think your problem is there around. Your amp is not running hot (plates looking good and normal), you are at idle.Your dissipation for class A is top. Maybe some problems with measuring. By mat...

Hello,
did you checked heater voltage too?

May be you could try the "light bulb test for first switching on" (or so), to check if you really pull so much current. In this case your lamp should be quite bright. I think here is somewhere a sticky about this bulb test.

Hans-Jörg

I would certainly clean up the wiring, but I wouldn't call that a complete rebuild. I think 1-2 hours work is all it needs. Robert Close to my words, or not :wink: To be honest: there are a lot of blank wires, resistors etc. which are Close together, or to screws and so. With every touch into it yo...

hans-jörg wrote:Hello,
I´m quiet sure I will not solve your current problem, but isn't it better to raise the first (reservoir) cap to let say 40µF and lower the following ones to 20µF?
PS: do I read right, your coupling caps C12 and C13 are 0,25µF?
shouldn´t be there 0,022µF, or 22n?

??

Hello, I´m quiet sure I will not solve your current problem, but isn't it better to raise the first (reservoir) cap to let say 40µF and lower the following ones to 20µF? That's what I read usually in schematics. Maybe there is the weak cap hidden? And yes, you need a EZ81 or SS rectification, but th...

o.m.g.! Did you bought it so? At first look I see several possibilities of shorting! Lot of blank wire, crossings, ...sorry, but ... I fthe green twisted wire is the filament (and I´m quite sure it is) - wire it new (see other pics of amps). I´m sure your fuse problem is not the tranny too, its the ...

Hi,

good news, wish you plenty pleasant hours with it!

Hans-Jörg

Hi Martin,
I see. I was not sure if I can run it this way with that common pin. But as the filament is independent and only for rectifier, there should be nothing against it.
And: its definitely healthier for the tube!
Thank you.
@your PS: its done

Best regards

Hans-Jörg

Hi,
what I found out here is, that I want to try out a switch for NFB: 100k/Non/33k.
Let live diversity!

Hans-Jörg

Hi, @Martin, no its an independent winding. @tictac, I have the STB switch in front of the rectifier and switch AC of both sides including a fuse at each side 8) . So before switching the rectifier - I switch the STB off, that means, the rectifier too. Also I don't use this small switch you see at t...