alper_yilmaz
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The amp would not distribute different frequencies to different drivers, but the crossover device in your speaker will, unless you bi-amp. By bi-amping, I mean you have dedicated amps for different frequencies. But since your signal source is only your bass guitar,
- you will have to split your signal into two (or more), - apply hi-pass or low-pass filters (HPF and LPF) on these signals, - process these signals with proper amplification, and - connect the outputs of these amps to different cabinets or drivers.
This is not something done (at least, not often), to the best of my knowledge, as it creates too complex a signal chain and for live applications it is not practical. I am more than happy to share with you my recording and live setup. My recording setup is more complex than my live setup, but even with that complex setup the marginal benefit is relatively small. And I actually use top-of-line gear in both cases...
With respect to use of subwoofers for bass, that is something the FOH guys do for the generality of bass frequencies, not only specifically for the bass instrument. In music genres like jazz, we never prefer use of subs as they tend to garble the music, specifically its definition.
There was this Chicago-based bass player whose name I cannot remember at the moment, but he was a constant contributor to talkbass.com at one point. He was very much into using sub frequencies in his bass amplification, but as far as I remember it could be done only for his recordings. I do know how he set his tone in concerts.
Cheers,
Alper
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