Install guide
page 12
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-impor-
tant midrange area causing your system to sound dull or lifeless.
Midrange: 300Hz to 3Khz – Musical instruments, vocals, mid-range
percussion and many things we associate with imaging and staging hap-
pen in this area of the bandwidth. For that reason you will want to keep
this area as smooth and balanced as possible. Too much boosting can
make you feel like your listening to your system in a tile bathroom. Not
enough energy the midrange sounds empty and dry.
Treble: 3KHz and Up – If midrange is the cake, then these high or
upper frequencies are considered the frosting. Many autosound systems
start a gradual decline in this area which is why speaker placement is
very important. The DQDX only gives you a few controls in this area
because too much boosting can really make a speaker sound un-natural.
Digitally Selectable Electronic Crossover
Since component speakers (like woofers,
midrange and tweeters) are designed to repro-
duce certain frequencies, a crossover allows
you to match the speaker needs to the appro-
priate frequency range. The correct crossover
frequency greatly depends on your choice of
speakers. This section presents techniques for
improving your overall installation if you are
installing a bi-amplied system. We recom-
mend choosing a crossover frequency based on your speaker manufac-
ture’s specications. Most manufactures list a recommended crossover
frequency as part of the speaker specications. Choosing the correct
crossover point will provide increased speaker reliability and optimum
sound quality.
The DQDX comes with a 24/dB Octatve Linkwitz Riley alignment
crossover that lets you select the exact crossover point you need for your
system. The crossover frequency markings on your DQDX are for refer-
ence purposes only. The exact crossover frequency can be found on the
chart below. To get to the exact desired frequency simply start out with
the crossover selector turned all the way to the left (or counter clock-
wise) and count the position clicks until you get to the frequency you
want to use.