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Old 22nd August 2003, 11:23 PM   #1
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Question A few questions

I'm adding a power switch to a homemade 50's tube amp. What type of switch should I use?
Where can I get one?
How should I wire it, inregards to the power cord and transformer...


Also, The output plug is a bakelite plug about 1 inch in diameter. It has 4 lugs on it. I can identify which is the ground, but all of them share a connection somewhere as tested with my multimeter. Strange thing is that it had 2 wires soldered to 2 of the lugs, one being the ground and together they work as an output.
What are the other 2 lugs?
Can I simply use them as a 2nd output?
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Old 24th August 2003, 08:37 AM   #2
jevta is offline jevta  Serbia
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Default Re: A few questions

Quote:
Originally posted by Skankadellic
I'm adding a power switch to a homemade 50's tube amp. What type of switch should I use?
Where can I get one?
How should I wire it, inregards to the power cord and transformer...


Also, The output plug is a bakelite plug about 1 inch in diameter. It has 4 lugs on it. I can identify which is the ground, but all of them share a connection somewhere as tested with my multimeter. Strange thing is that it had 2 wires soldered to 2 of the lugs, one being the ground and together they work as an output.
What are the other 2 lugs?
Can I simply use them as a 2nd output?
Exuse me, I don`t understood.Is there plug for headphone or speakers?.Wy you need ground have you ballanced output, maybe?
Miroslav
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Old 24th August 2003, 10:56 AM   #3
SHiFTY is offline SHiFTY  New Zealand
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In your mains lead to the amp, you will have "active", "neutral" and maybe earth (if you have three pin plugs).

For a power switch, just put a switch in the "active" line, on the amp. It will be labelled on the socket, especially if you use an IEC (computer type) power socket. You should also put a 0.5 to 1A fuse between the active and the switch, if there isn't one.

The output on a tube amp is from a transformer, is it a stereo or mono amp? You will measure a low resistance on a multimeter because the secondary of thetransformer has quite thick wire.

Post pics and we can help more. If you don't know what you're doing, take it to a technician There are scary voltages (300V +) inside a tube amp.
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