Tube Amp Archive

OK, thanks, you been a huge help.
I'm buying the stuff now.

But doesn't the existing isolation transformer mean I don't need slo blo? It is regulating current, isn't it?

How would I measure the current in this amp in order to figure out what fuse I need? Do I use a multimeter?

Thanks for the transformer info.
I was planning on replacing the filtering cap and the other electro as well, forgot about carbon comps, I should check those... after I get the amp to the point where I'm not risking my life by playing it.

Anyone?

Thanks guys, that helps a lot!
So what is the purpose of the isolation transformer on the preamp tube, then?
Also, if I added that transformer, would that also reduce the hum?

I keep on hearing that this amp has no PT, or that it is "Transformerless", but I see two transformers on the schematic, and two transformers on the amp.
You can only see one hear, but:

Only decent info I can think of offhand is here:
http://schematicheaven.com/mods/datecodes.htm
but they got nothing on that particular speaker.

I understand basic amp safety (discharging caps, one hand rule, ect.) I I can read schematics, although I don't know how I missed some of the vital info that was in that schem. And yes the amp is a cheap piece of crap, but it actually sounds pretty good. A decent mount of people use them (check out ...

http://i301.photobucket.com/albums/nn71/svsguitarhero/IM0010962.jpg?t=1231723641 I lost the original pic, but I re sized that one with Paint. I got shocked by the chassis when the amp was off but plugged in, not fun. Does that mean I have the hot and neutral wires mixed up? Sorry, I can't seem to g...

First off, I'm brand new to this forum, and pretty new to tube amplifier work as well, all I have under my belt are some mods to an Epi VJ and replacing/cleaning pots for some friends. I recently bought a Harmony H-400A off ebay. Stupidly, I didn't take any picks of the thing before I took it apart,...