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TRAYNORetcALERT- The " Look What s on Ebay" Thread

562 by llllllllllllllllllllllll_Archive
scott wrote:Saw that auction and was a little skeptical. Seller says it works great, but there are serious signs of corrosion on one of the filter caps, like it looks like it's leaked a bunch. I'm a big fan of the automatic cap job for a 35 year old amp (how old that one is) but with the filter caps having that battery-acid kinda look to them, I personally wouldn't even think of turning the amp on without replacing them, regardless of how the seller says the amp is performing.

It's like, if you went to pick up a used car you were buying, and it was sitting in a giant pool of brake fluid, maybe you'd wanna have the brakes looked at.


Thanks for letting me know, I'll bring it to my guy as soon as I get it. Would he be able to put 6550's in this thing to make it a little louder? Would that even be necessary? I'm going to be using it for bass.
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TRAYNORetcALERT- The " Look What s on Ebay" Thread

563 by scott_Archive
llllllllllllllllllllllll wrote:Thanks for letting me know, I'll bring it to my guy as soon as I get it. Would he be able to put 6550's in this thing to make it a little louder? Would that even be necessary? I'm going to be using it for bass.


I wouldn't view the tube change as a way to make it louder so much as it is a way to change the tone of the amp, change the way it breaks up and whatnot. If you want it to be louder, the best way to get there is to add more speakers/cabinets. It gets *plenty* loud with a 2x15" and 4x10" at the same time, for example. Even just a single 8x10" is enough to get it really loud.

Changing tube models is a way to change the nature of the distortion you get out of the amp (or lack of distortion). So I wouldn't go changing it to 6550's until you're sure you don't like the sound of EL34's.
"The bastards have landed"

www.myspace.com/thechromerobes - now has a couple songs from the new album

TRAYNORetcALERT- The " Look What s on Ebay" Thread

564 by llllllllllllllllllllllll_Archive
scott wrote:
llllllllllllllllllllllll wrote:Thanks for letting me know, I'll bring it to my guy as soon as I get it. Would he be able to put 6550's in this thing to make it a little louder? Would that even be necessary? I'm going to be using it for bass.


I wouldn't view the tube change as a way to make it louder so much as it is a way to change the tone of the amp, change the way it breaks up and whatnot. If you want it to be louder, the best way to get there is to add more speakers/cabinets. It gets *plenty* loud with a 2x15" and 4x10" at the same time, for example. Even just a single 8x10" is enough to get it really loud.

Changing tube models is a way to change the nature of the distortion you get out of the amp (or lack of distortion). So I wouldn't go changing it to 6550's until you're sure you don't like the sound of EL34's.


I should have said "cleaner" instead. Will definitely see how it works out for me before I do anything drastic. What does changing the tubes to 6550's entail? Is it anything an electronics novice like myself could do?
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TRAYNORetcALERT- The " Look What s on Ebay" Thread

565 by scott_Archive
It's more or less just replacing one resistor in the bias supply with a different value. Depending on how big of a variable resistor is in there now (how big of a sweep it has) you might not even need to change anything, other than the setting on that resistor. But chances are, you'll need to replace the fixed resistor that's in series with that variable resistor. Really easy mod, and on a '73 Traynor, you don't even have to pull it apart, just lift off the top.

You should also go for the "one 1K resistor per output tube screen grid" mod, as a matter of course, too.
"The bastards have landed"

www.myspace.com/thechromerobes - now has a couple songs from the new album
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