User Manual
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Level Matching
If you have ever listened to a friend’s “killer” car audio system and
heard lots of hiss, clicks or pops, then you have experienced an improp-
erly level-matched system. When a performance Autosound system is
properly level matched, you should get the maximum output from your
source unit and ampliers without any clipping or annoying hiss. The
following steps will help guide you through the process!
1. Set your source unit’s fader and balance controls to their center
posion and your amplier(s) gain control to a minimum (usually
counter clockwise).
2. Disconnect the output RCA connecons between your DQDX and
your amplier(s)… otherwise get some earplugs.
3. Start playing some relavely dynamic music and set the volume
on your source unit to about ¾ max volume. You should not hear
anything at this point. If you are hearing music, go back to step
#2… If you are hearing voices, please go see a doctor!
4. Starng with the DQDX input level controls, adjust the control
knob clockwise unl the Input Maximized LED just begins to
icker. Do not connue to turn past this point.
5. Now adjust the output level control unl the output maximized
LED starts to icker.
6. Decrease the volume control on your source unit and turn o
the power to the system. Now re-connect the RCAs between the
DQDX and your amplier(s).
7. At this point you can adjust your amplier gain control according
to the specicaons of your amplier manufacturer.