Tube Amps / Music Electronics
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|11/16/2003 6:46 PM|
||turning a VTM-60 into an SLO|
im going ot be keeping the capacitor board, and the power tube board. everything else comes out. i have a few questions.
1)im adding a 12ax7 and a 6AV6. im good on the b+ rail. same kind of rail, and number of caps. but do you think the tranny can take the extra heater current? approximately .6 amps at 6.3V. my guess is it wont be able to keep up, and ill need ot put in a small tranny.
2)anyone want these 2 boards? the main circuit board, and the front input/potentiometer board. all parts are on it, and is in good condtion, w a few mods. it works to the best of my knowledge, and was working b4 taking it out of the amp. $25.
|11/16/2003 9:54 PM|
it will take the extra current. ive run el34's (an extra 1.2 amps) in my vtm 60 for many months without any problems.
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|11/17/2003 2:16 AM|
PV transformers tend to be pretty robust, the extra half amp will not be a problem.
Why use the 6AV6 instead of just half a 12AX7? If you use the AX, then anyone using the amp will eb able to get replacements readily. If the 6AV6 fails, they will have to order it from somewhere - no one will stock it locally.
|11/17/2003 1:22 PM|
cool. i didnt know how much current it would allow me to sink.
as ar as the 6AV6, why waste a triode. i have a few of them NOS, and can get them at purchase radio in ann arbor. they have alot of tubes. plus, i like to use different tubes, it tests my skills in hookup.....
also, this amp will be donated to a musicians orginization that i belong to, so maintenance will be up to me. in the event of this orginization breaking up, the amp reverts back to me.
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