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chosenfool

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  1. hi all! thanks for the wonderful tips here - i like the sound of the mods! after my debacle with the ornery CH1 volume pot, i decided, what the heck, ill do them mods. 1) C5, C6 one leg each cut. decent treble tamed for CH2. 2) Parallel a 5.6K/1W resistor with R15. WOW! CH2 is more alive, brighter drive, more defined distortion. some slight increase in perceived loudness too. 3) C3 on leg cut. CH1 sounds less treble-y. easier to manage! thats all ive done on the circuit bends. And all tested with stock 6L6GC and 5AR4, but has old stock mullards for V1 and V2, old stock RCA for V4, and old stock telefunkens on V3 and V5. I decided to use the stock power and rectifier tubes since theyre cheap, and i wont lose any sleep if i end up breaking them. those NOS 5AR4's are $$$$$! but i must say, you guys are geniuses to have figured out what to tamper with to give it a better tone - THANKS! as suggested on one of the posts here, i m looking to put 3 small switches to have the option of playing this stock, or with those mods. Im looking to put a switch for C3, one for the C5/C6 cuts, and one for the R15 paralleled resistor. man, that resistor is the best sounding, most noticeable among the mods mentioned. though not technically a mod, up next is TUBE ROLLING! im using old stock sylvania and raytheon 6L6GC's as my default power tubes. My default tube rectifier is a NOS Bendix 5AR4. - solid-state rectifier (old stock US 6L6GC's are strong enough to withstand the higher voltage, so no worries about it. id be more afraid for the stock EH tubes) - old stock tung-sol 5U4GB tube rectifier. i already know how this sounds stock, but we'lll see what the mods will do... - a couple of NOS NIB 5V4's tube rectifiers. -- ive ordered several NOS NIB russian 6P3S and 6P3S-E tubes just for kicks. plus theyre dirt cheap - Yellowjackets! Curious to know how EL84's will sound on this amp. im leaving the lady luck speakers in. i kinda like its tone, BUT.... seeing as theres several different speaker outs on the back, I may hook this up to a couple of 2x10 cabs with '66 or '67 C10N jensens. Then see how it sounds on a couple of 1951 25W 12" alnico jensens in its 15W mode. cant think of any other mods id want to do, but again, thanks for the useful knowledge, guys! - Marc
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