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Old 2nd November 2010, 05:43 AM   #1
nige838 is offline nige838  United States
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Default 4ohm output transformer with 8ohm speaker

I'm using a 4ohm output transformer to power a 8ohm speaker, is this OK? What can happen? Sorry if this is a stupid question, but my 50c5 runs REALLY HOT...

Thanks,
Nick
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Old 2nd November 2010, 06:38 AM   #2
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50C5s typically run hot anyway. As for that connection, doubling the load at the secondary doubles the primary load as well. The shallower loadline will cost you some output power, but could also improve linearity. Just have to try and see.
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Old 2nd November 2010, 07:21 AM   #3
ChrisA is offline ChrisA  United States
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Quote:
Originally Posted by nige838 View Post
I'm using a 4ohm output transformer to power a 8ohm speaker, is this OK? What can happen? ..k
With that setup I think you just get less power out of the amp. A lot less either 1/2 or 1/4 it's to late to work out which. Let's see power is (I^2)R, ......

But if you think about if this is common. Most all speakers have higher impedance at higher frequency so at above a few hundred Hz all systems have a mismatched load
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