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I've searched all the usual places, couldn't find this schematic. This site has a link to one, but the link is dead and I couldn't find anywhere to contact the administrators. Does anybody happen to have this schematic?
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Red Knob Twin Schematic
The Red Knob Twin is the same amp.
Schematic attached. -
It looks to be pretty similar, right off the bat though, I see that the fuses are different values, (the schematic says 7A and 8A, my amp is clearly marked 4A for one, not marked on the other). I'm concerned that other values might be different as well...Comment
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They're both 100W, 4x6L6 amps, the twin is the combo version, the dual-showman should be the same without speakers. Are you on 120VAC ?Originally posted by Enzo
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Yes, I'm on 120V.
Amp:
Schematic:
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I think somebody made a mistake on that schem. The fuse values don't agree with what the parts list says. Going by the parts list, F301 should be 4A (external fuse), F302 should be 5A (internal). For the export (240VAC) it says 2A & 2.5A. Seems to me all the red knob "The Twin" amps I saw had 4A fuses too.
The chassis and schematic for the dual-showman and the twin should be the same.Originally posted by Enzo
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Great, thanks! I'll go with the 4A and 5A. The 5A internal should be a slow blow as well, correct? Can someone explain to me the purpose of having two fuses in series like that? It seems like either the 4A is going to blow or they're both going to blow if the current gets high enough fast enough, so why not just have the 5A?Comment
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Maybe they did that in case someone puts in an incorrect replacement.
(ie: aluminum foil wrapped around the failed fuse)
(20 amp fuse)
Don't laugh.
I have seen it!
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Ah, the ol' idiot proofing by design. Makes sense.Comment
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definitely idiot proofing, Amp did the same with internal pigtail fuses.Comment
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I think you mean Ampeg? Yes, one step ahead...Comment
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Yes, both the 4 & the 5 amp fuses are time delay (slo blo)Originally posted by PepeSilvia View PostComment
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