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220V to 110V Power supply mod

69.199.248.94

Posted by AmpNewB on November 20, 2005 at 20:57:32

Hi everyone,

I am a newbee tube amp owner. I own a couple lowly 3.5W and 10W per channel tube amps. However, they both take 220V AC input and I need to use an external 110V->220V AC converter to supply the power to the amps and it's very inconvenient. I want to know if it's easy to change the internal transformer so that it'll take the north american standard 110V. I have a 110V AC power supply unit which is supposed to be a replacement for the 220V unit in one of the amps. But I am not sure if it's just as easy as replacing the unit directly and re-connecting the wires, or if I need to modify other components too. How is it supposed to affect the performance and operation safety of the modified unit? I know these questions sound stupid but I'd be very grateful if any of you would offer some guidance.

Here is a link to the specs and dircuit of one of my amp:

Specs: http://www.tubehifi.com/MG_SPSV6.HTM
circuit: http://www.tubehifi.com/Circuit/C_spsv6.jpg

Thanks!!

• Specs of MG-SPSV6   (Open in New Window)

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