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system from one frequency to the next and give your speakers
the sparkle, sizzle, detail or punch that the acoustics of the car
have compromised.
3. Start equalizing by removing or cutting any large bumps, peaks,
or areas with too much energy at a particular frequency. Next,
boost the ranges that do not have enough energy. We strongly
recommend that you cut or decrease energy before you boost.
4. Although the plethora of knobs on your DQDX can be intimidat-
ing, fear not as they were designed to give enough control to
maximize your systems performance but not enough to get you
in trouble. Here is an explanation of the key areas you should
focus on:
Sub-bass: 100 Hz and below –
A car without bass is like a day without
sunshine... unless you live where we do because most of the days in
the Pacific Northwest do not have sunshine. This sub-bass area is one
of the more critical although it is also one of the most difficult to prop-
erly reproduce. Most people prefer their bass frequencies to be 6 to 9
dB louder than the rest of their system, although there are some crazy
folks that prefer their bass substantially louder. The key in this area is
to have enough speakers and power to produce the amount of bass
you desire but don’t use the controls on the DQDX to try and force your
speakers to produce sounds they can’t. Too much bass boost creates a
condition called “speakerus explodus”, which is not pretty.
Midbass: 100 Hz to 300Hz –
The phrase, “too much of a good thing”
can certainly apply to the midbass frequencies. This is the transition
area of the audio spectrum that is an octave above your sub-bass
frequencies and several octaves below your midrange. Most autosound
systems have too much midbass due to the fact that speakers mounted
in the doors or kick panels cause resonance’s or peaks in the response
curve. These peaks in the midbass can actually mask or block sounds in
the all-important midrange area causing your system to sound dull.
Summary of Contents for DQDX
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