Quote:
Originally Posted by Ric Vice  I would agree with this and add that most amplifiers tend to use controls that only boost a particular frequency range, when what you really need in most situations with Acoustic Bass is the ability to cut frequencies. Walter Woods, Acoustic Image, and Euphonic Audio amps allow you to roll off the bad stuff for the most part.
Ric |
Virtually all of the amplifier circuits I have seen provide for both boost and cut. The centered positions of the controls usually provide neither with counterclockwise and clockwise rotation actually cutting and boosting, respectively. Much of the dissatisfaction with tone controls stems from poor choices (from the standpoint of DB amplification) of:
1) center frequency-- self explanatory
2) bandwidth (Q)-- the range of frequencies affected by the control
3) response-type (e.g., shelving, constant-Q, variable-Q, etc)-- how the range of frequencies affected by the control varies with the degree of boost and cut
Design of useful tone controls for DB amplification would, ideally, combine knowledge concerning circuit theory, physical acoustics, and psychoacoustics (the response properties of the ear, masking effects, loudness functions, and other factors that relate to human auditory perception).
