Ampeg Gemini 1 capacitor canister
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terryrocks
- Posts: 31
- Joined: Sun Feb 21, 2010 12:17 am
- Location: portlandia
Ampeg Gemini 1 capacitor canister
Just received my replacement components from fliptops. However, the new capacitor canister is missing a tab. Can anyone recommend where I should route the lead?

Re: Ampeg Gemini 1 capacitor canister
What are the values in the old can?
What are the values in the new can?
I attached a schematic. Is this the correct amp?
What are the values in the new can?
I attached a schematic. Is this the correct amp?
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terryrocks
- Posts: 31
- Joined: Sun Feb 21, 2010 12:17 am
- Location: portlandia
Re: Ampeg Gemini 1 capacitor canister
It is the correct schematic:
Old:
Semicircle - 60microF @450v
Square - 40microF @450v
Triangle - 10 microF @450v
20microF @25v
New:
Semicircle: 70mIcroF at 450v
Square - 40 mirco @450v
Triangle - 40 micro @450
Old:
Semicircle - 60microF @450v
Square - 40microF @450v
Triangle - 10 microF @450v
20microF @25v
New:
Semicircle: 70mIcroF at 450v
Square - 40 mirco @450v
Triangle - 40 micro @450
- Leo_Gnardo
- Posts: 2585
- Joined: Thu Sep 27, 2012 1:33 pm
- Location: Dogpatch-on-Hudson
Re: Ampeg Gemini 1 capacitor canister
You will have to use a separate cap to replace the 20 uF @ 25V. No problem if it's over voltage say 50V, or nearly the same, as in 22 or 25 uF. Good idea to mount it somewhere it won't get toasted by the resistor it's bypassing or any other hot R's or tubes in there.terryrocks wrote:It is the correct schematic:
Old:
Semicircle - 60microF @450v
Square - 40microF @450v
Triangle - 10 microF @450v
20microF @25v
New:
Semicircle: 70mIcroF at 450v
Square - 40 mirco @450v
Triangle - 40 micro @450
down technical blind alleys . . .
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Stevem
- Posts: 5144
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- Location: 1/3rd the way out one of the arms of the Milkyway.
Re: Ampeg Gemini 1 capacitor canister
Seing as these Amps are now powered by more line voltage than there parts where spec for and all the internal voltages are higher I would up the voltage rating of the cathode bypass cap to 35 volts .
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Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!