Converting a Tremoverb to 50 Watts

[badcatblackcat]

I have a '97 Tremoverb and I seem to recall that you can run a TOV at 50 watts by removing one of the rectifier tubes and two of the power tubes. I can't remember though which rectifier tube goes with which power tubes to do this. Does anyone know? Thanks for the help.

 

[mikey383]

The rectifier tubes aren't assigned to a certain pair of power tubes. Being wired in parallel, they share the load. You don't even have to remove one if you're using the diodes, or if you want a stiffer tone. Mesa recommends removing one to keep the same amount of sag as all 4 power tubes would have when using the tube rectifier.


Also, when removing power tubes, just make sure you remove either the innermost pair, or the outermost pair, and not the 2 to the left or right, and plug your cab into the output jack that is half of the cab's impedance to keep the same frequency response. If you have an 8 ohm cab, then use the 4 ohm jack.

 

[94Tremoverb]

To keep the correct impedance match you should also run the speakers/cab from the jack for half its impedance (eg use the 4-ohm jack for an 8-ohm load). It won't really harm anything if you don't do this, although it will shorten the tube life a bit if you're really cranking it. It will also change the tone, so if you want the exact same tone but at half the power you should do so.

 

[halfnote]

Ther is not a very noticable difference in volume by removing 2 tubes. You can get the same result by cutting your load down, like going from the 4 ohm out to a set of speakers wired for 8.

 

[badcatblackcat]

Thanks for the help.