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Replacement fuse in K200A-2 after 110 -> 230V conversion [message #28899]

Tue, 17 January 2023 05:13

claussoegaard
Messages: 27
Registered: July 2022

Junior Member

Possibly/probably/definitely a dumb or noob-ish question.. But here goes. After converting my K200A-2 to 230V after moving to Europe, I should replace the fuse, right? More voltage = less current, right? So the stock 3 amp fuse should be replaced by a 1.5A fuse, yeah?

And the speaker fuse I should leave alone right? Since that happens after the power transformer, where things are the way the were before the conversion. Yeah?

And any parts numbers recommendation from Mouser? Not sure if it should be slo or fast blow.

Thanks!

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Re: Replacement fuse in K200A-2 after 110 -> 230V conversion [message #28900 is a reply to message #28899]

Wed, 18 January 2023 06:31

stevem
Messages: 4774
Registered: June 2004
Location: NY

Senior Member

Yes, half the amperage of the input A/C fuse and you can leave the speaker fuse as is if you want, but what I do for folks who will never play the amp up anywhere near cranked is reduce the speaker fuse down to 4 amps.
4 amps is enough to allow over 100 watts out to the speakers, yet if a circuit problem does take place less parts will likely blow up.

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