Re: Frequency response questions
Either cab is has plenty of range for most guitar work. The frequencies we guitarist consider as being effected by the bass knob on our amps are around 150 Hz. Mids would be from around there up through around 1200 Hz, and anything above that is treble.
Somebody correct me if I'm wrong, but if I recall correctly the low E on guitar is around 100HZ? If you you use drop tuning you may want a cab that goes a little lower, but maybe not.
Those bass cabs with 10" or 8" speakers don't cover the fundementals of the bass notes at all, they only reproduce the harmonics of the lowest notes, but that actually sounds better in many situations. The bass note harmonics will usually sound tighter and less flubby than the fundementals, but a lot of this is also how tightly the speakers are damped by the output section of the amp, along with how quickly the speaker reacts.
On the other end you wouldn't want a guitar speaker that covers the full range of human hearing, which can extend to 20,000 Hz, that could be really ice picky. Actually the so called upper mids spike that some people complain about with Vintage 30's seems to be only around 1100 hz. This actually is about were many people boost the EQ on a graphic for solos. However, having enough bandwidth so that the even order harmonic overtones can be reproduced will result in a richer, more complex tone. A speaker that is incapable of covering a range of harmonic overtones for the high notes may sound flat and thin up top.