Hi all. I recently bought one of the little Vox MV50 guitar amps. This uses the NuTube preamp tube, but is a class D amp. I don't understand why this thing would have an impedance switch on the back. I didn't think that mattered with a class-D amp. (Or any other solid-state amp, for that matter.) Is this just a marketing gimmick to help create the illusion that this is a "tube" amp? Or is this actually needed in this application?
Thanks all;
Artie
It probably just caps the power so that you don't damage low impedance speakers.
Actually it can mather with class-D but that depends of the design, this is rare as most class-D are designed in a way that this don't happen, in the class-D the output speaker impedance can affect the response of the output filter an this switch can possibly tune the output filter to obtain allways the same response.
Actually it can mather with class-D but that depends of the design, this is rare as most class-D are designed in a way that this don't happen, in the class-D the output speaker impedance can affect the response of the output filter an this switch can possibly tune the output filter to obtain allways the same response.
Yeah . . . I was thinking it was just a tone-shaping option. I suppose I could switch it while using the same speaker and hear what difference it might make. I'd do this, of course, at lower volumes.