AudioControl LC6i, User Manual

Page: 23 / 32

-----------------------------------------------23 ----------------------------------------------
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 may have experienced an
improperly level-matched system. When a performance autosound
system is properly level matched, you should get the maximum output
from your source unit and amplifiers without any clipping or that
annoying hiss! The following steps will help you through the process,
although at the end of the day, your ears will be your guides!
1. Set your source unit’s 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 RCA cables between your LC6i and the amplifi-
er(s). Otherwise get some earplugs.
3. Start playing some 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 as the amplifiers are unplugged. If you are
hearing music, go back to step #2; if you are hearing voices go
see a doctor!
4. Adjust the output level controls until the “Maximized” light starts
to flicker. If the Maximized LED does not come on but you are
hearing music, fear not. The signal level from your source unit is
probably not sufficient enough to trigger the LED. Do not worry,
proceed on.
5. Set the input gains on the amplifier(s) at minimum! This is
known as turning down your gains.
6. Double check that you performed Step #5!
7. Decrease the volume control on your source unit and re-connect
the RCAs between the LC6i and the external amplifier(s).