Install guide
page 13
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 posi-
tion and your amplier(s) gain control to a minimum (usually counter
clockwise).
2 Disconnect the output RCA connections between your DQDX and
your amplier(s)… otherwise get some earplugs.
3 Start playing some relatively 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 Starting with the DQDX input level controls, adjust the control knob
clockwise until the Input Maximized LED just begins to icker. Do not
continue to turn past this point.
5 Now adjust the output level control until the output maximized light
starts to icker.
6 Decrease the volume control on your source unit and turn off the
power to the system. Now re-connect the RCA’s between the DQDX and
your amplier(s).
Pos Freq Pos Freq
1 50
7:00 pos, full left rota-
tion
12 125
2 50 13 150 1:00 pos
3 60 14 175
4 65 15 200
5 70 8:30 pos 16 250
6 75 17 300 3:30 pos
7 80 18 400
8 85 19 500
9 90 20 defeat
10 95 21 defeat
5:30 pos, full
right rotation
11 100