- 6 -
AUX
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System 4
Level Matching
If you have ever listened to car audio system and heard lots of hiss, clicks or pops, then
you have experienced and improperly level matched system. When a car audio system
is properly level matched, you should get the maximum output from your source unit and
amplifiers without any hiss, clicks or pops. The following steps will help you;
1. Set your source units fader and balance controls to their center positions. If your
source unit has subwoofer output (and you are using it), set the output level at minimum.
2. Disconnect the connections between your KEQ20 and the amplifier(s).
3. Start playing some relatively dynamic music and set the volume on your source unit
to about 3/4 of maximum. You should not be hearing anything at this point.
4. Starting with the KEQ20 Front Input gain control, increase or decrease the Input
Gain control until the Overload LED begins to flicker steadily with the music. Do the same
for the Rear Input and Subwoofer Input.
Important Note:
For Four Channel Or Speaker Level Input Users. If you are only using the Front or Rear
or Speaker Level inputs, you will find that the subwoofer equalization now works on the
rear channels. Therefore, the Rear
input gain is actually controlled by the Subwoofer
input gain control.
5. Now adjust the output level control until the 2 volt or 5 volt light starts to flicker. You
will set the output voltage to match up with your amplifiers input gain levels.
6. Double check that, the input gains on the amplifier(s) at minimum.
7. Decrease the volume control on your source unit and re-connect the RCA's between
the KEQ20 and the amplifier(s).
8. Now increase the volume on your source unit to your normal listening level.
9. At this point you may find yourself going back and adjusting the Output Level controls
on your KEQ20 to balance the Front, Rear , and Subwoofer sections of your system to
accommodate for the speaker placement and efficiency.
Front
Speakers
Rear
Speakers
Sub-
woofers
