can i set up the normal channel to be useable, why not

VintWeasel · Post by **VintWeasel** » Fri Jun 22, 2007 8:26 am

what would stop me from setting up my normal channel to sound like a shared cathode amp. Of course i would have to double the resistor, using prob a 1640 Ohm and probably a 25mf cap across...along with adding a cap across that channels tone stack resistor(maybe a 250pf)...but the question is....will this change affect the treble channel???? Or harm the amp in any way???

45auto · Post by **45auto** » Fri Jun 22, 2007 9:18 am

that would be pretty cool if it didn't change chan I

VintWeasel · Post by **VintWeasel** » Fri Jun 22, 2007 12:07 pm

Are you saying that it will affect the sound of channel1????

SDM · Post by **SDM** » Sat Jun 23, 2007 5:22 am

VintWeasel wrote:what would stop me from setting up my normal channel to sound like a shared cathode amp. Of course i would have to double the resistor, using prob a 1640 Ohm and probably a 25mf cap across...along with adding a cap across that channels tone stack resistor(maybe a 250pf)...but the question is....will this change affect the treble channel???? Or harm the amp in any way???

No you won't harm the amp with those kind of changes. Changing the normal channel's cathode will effect current draw and thus the voltages through the B+ line a bit, probably no big deal there (and you can account for that by tweaking the dropping/decoupling resistor if you really wanted to), but adding a cap across the normal channel mixer will effect the bright tone as that added cap will be able to roll off the bright channel highs, especially if using the bright channel with normal volume set all the way down.

VintWeasel · Post by **VintWeasel** » Sat Jun 23, 2007 7:12 am

HMMMMIl l have to experiment. No sense leaving that normal channel there unused(i never use it), when i could set it up as another useable option. As my amp is a split cathode, my goal is to set the normal channel up as a shared cathode amp, thus having both tones available...a split and shared cathode tone on 1 amp.... But i am happy with the treble channels sound, and i dont want it affected in any way..

neikeel · Post by **neikeel** » Wed Jun 27, 2007 7:50 am

Really simple way to start with is add a lets say 500pf bright cap to the normal vol pot, then try up and down values. I have seen an amp with a 100pF on one (a JTM50 I think).

Unless you always play at volumes of higher than 7-8 then ignore me................

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can i set up the normal channel to be useable, why not

can i set up the normal channel to be useable, why not

Re: can i set up the normal channel to be useable, why not

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