Why was the 8 ohm tap used on the output transformer connected to the large ohmite dummy load ? Wouldn't conventional wisdom guide you to use the 16 ohm tap for more OTX colorization ? The 8 ohm load went into a 22 ohm power resistor rated at 200w The conversion would be 16 ohm tap into 44 ohm load . HMMM
Secondly Where was his feedback taken from , the 4-8-16 ohm tap or the neg tap . ? And with what resistor 27k , 47k or 100 k ?
as far as the filtering for that period 32uf single on top of chassis , 32ufx32uf in series to screens , 100x100uf in series voltage doubler and 16x16 in the pre amp - is this 16 for v1 and 16 for v2 ? Parallelled for 32uf ? not sure .
Lastly are we talking ceramic bypass caps on 470k or ceramic disk ?
And What was on the VI volume control ? 100pf , 250 pf , 500 pf , 1000pf or .005 uf ?
My stock superbass 12 series is Extremely close in tone , scary close , just wondering about these final details .
Thanks for any support here , David
Why was the 8 ohm tap used on the dummy load ?16=more color?
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Re: Why was the 8 ohm tap used on the dummy load ?16=more co
some guys say it was 8 ohm some say 4ohm with 47k resistor in place - you can try and do it like Dan explains of changing out that resistor:plexified wrote: Secondly Where was his feedback taken from , the 4-8-16 ohm tap or the neg tap . ? And with what resistor 27k , 47k or 100 k ?
100k in place of 47k is the same as putting the NFB on 4 ohm tap( or close anyway) - i havent tried this although i have done the 4ohm tap and 8ohm tap.
4ohm is gainier and has more compression going on, tighter and more focused- appears to have more distortion.
8ohm has more depth, body, tone and color, meat, woody...substance
my idea on this is.. i think that some may think ed used the 4ohm tap cause it basically has alittle more gain that they are lookin for in the circuit. but if you compare them long enough youll find the 4ohm tap is not as open or woody sounding as the 8 ohm tap -
my (at this point) conclusion on this is 47k on the 8ohm tap.
try it and let your ears tell you.
Mark