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John Williamson John Williamson is offline
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Default Silly Question: Can an 8 Ohm Speaker on a 16 Ohm Output of a TubeAmp, Blow out the Main Fuse?

On 15/01/2021 15:40, Mike Rivers wrote:

Highly unlikely, but you should connect the speaker to the 8 Ohm output
and then figure out why the fuse blew.

Did you replace the fuse and the replacement blew either instantly or in
a short time? If so, figure out what's causing it. It could be a shorted
diode in the power supply, a short in the power transformer, or
something in the amplifier circuitry drawing too much current.

If this was a one-off blown fuse, you replaced it, and it hasn't blown
yet, then just play on.

I have had a problem in the past when excessive bass managed to overheat
the output transformer and/ or the mains input transformer , which blew
the main fuse.

--
Tciao for Now!

John.