Thumper
Well-Known Member
Just to be sure I have my marching orders all set:
-redo the IBBA ground. Not bad as is but could be better.
-swap volume pot (gravy train)
-change out phono caps C66 and C67 - C66 is between pins 2/6 and C67 pins 1/7. Stock value was 0.01uf but I have a couple 0.022uf yellow tube deals on hand outta my parts drawer.
-tape/aux resistor snip - R69 and R70 330k? Larry you said 68 ohm but I'm seeing 330k, tell me if I'm nutz here.
-reverse headphone feeds.
-FM de-emphasis tweak - change R222/R223 to 18k
-change MPX caps C214/C221/C222 if I can get to 'em - they came with metalbone's kit but I took one look and said hell no!
Edit - I may have some of the part #'s wrong here as I've three sets of skits for it - the correct one (hard to read) - another correct one that came with metalbone's kit (that's easier to read) - and the MPX section skit out of the early model service manual which was the only one I could find.
Double edit - didn't realize metalbone's kit came with a late model MPX skit - I compared them and the part numbers look the same.
Rob
-redo the IBBA ground. Not bad as is but could be better.
-swap volume pot (gravy train)
-change out phono caps C66 and C67 - C66 is between pins 2/6 and C67 pins 1/7. Stock value was 0.01uf but I have a couple 0.022uf yellow tube deals on hand outta my parts drawer.
-tape/aux resistor snip - R69 and R70 330k? Larry you said 68 ohm but I'm seeing 330k, tell me if I'm nutz here.
-reverse headphone feeds.
-FM de-emphasis tweak - change R222/R223 to 18k
-change MPX caps C214/C221/C222 if I can get to 'em - they came with metalbone's kit but I took one look and said hell no!
Edit - I may have some of the part #'s wrong here as I've three sets of skits for it - the correct one (hard to read) - another correct one that came with metalbone's kit (that's easier to read) - and the MPX section skit out of the early model service manual which was the only one I could find.
Double edit - didn't realize metalbone's kit came with a late model MPX skit - I compared them and the part numbers look the same.
Rob
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