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Old 10-19-2008, 04:31 AM   #43 (permalink)
Pete240885
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Join Date: Jul 2008
Location: Yorkshire, UK
Posts: 235
Re: Marshall AVT50 Mods

Quote:
Originally Posted by Peter View Post
As for speaker impedance, using a speaker rated at a higher impedance than the amps is harmless, but if you run an 8 ohm speaker in a 4 ohm amp, your power gets cut in half. if you run a 16 ohm speaker in a 4 ohm amp, your power gets cut in 4. 4 ohm speaker with 4 ohm amp=100% of your power. WARNING: NEVER USE A LOWER IMPEDANCE SPEAKER THAN THE AMPS IMPEDANCE RATING, AS THAT WILL CAUSE SEVERE DAMAGE TO THE AMP.
I studied amplifier design in the seccond and third years of my degree, this does not agree what i've been taught.

If the power is not being fed to the speaker then it is being dissapated inside your amp, therefore an impedance missmatch, be it too high or too low, is bad.
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