Selectable Speaker Impedance

[Knowcaster]

I have a Carvin Belair, it has 2 8 ohm speakers wired in parallel, giving it a combined impedance of 4 ohms. Therefore I have set the impedance selector switch at 4 ohms, and all is well (the switch can select 4, 8, or 16). However, I was just perusing the new issue of Guitar Player magazine, and in one of the columns the author stated that it would be better to wire them in series to be 16 ohms and select the 16 ohm option of the switch. He said that the 4 and 8 ohm settings only use part of the transformer, which limits the amps performance, and by using the 16 ohm option the full transformer would be used. I have never heard of that before, does it make sense? I guess I could rewire the speakers to be in series and see if it makes any difference, but I wanted to tap into the vast tdpri knowledge base first. Thanks.

[celeste]

Try it if you are curious. It will not make much difference, remember, different does not mean better. Dead turns in the transformer make a very small difference. In HiFi it is gennerally considered better to take feedback from the speaker tap you are using, so that the feedback better represents the output signal. In a musical instrument amp none of this matters, because what matters is how it sounds to you.