In-Dash
tm
FOUR.1
E
Owner’s Enjoyment Manual
Two Sources & Two Amplifiers
Figure 8: FOUR.1i with 2 source units & 2 amplifiers
D. Level Matching
Many manufacturers claim that their source units
produce signal voltages in the area of 2 to 4 volts. However,
what they neglect to mention is that you only achieve these
incredible voltage levels when the volume is turned all the
way up. Try listening to that all of the time. By following
the level matching steps for the FOUR.1
i
you will be able to
take full advantage of the maximum voltage output of your
head unit.
1. Disconnect the RCA cables leading into your amplifi-
ers, and make sure the RCA cables between your head unit
and the FOUR.1
i
’s main inputs are attached. Turn the volume
level knob on the FOUR.1
i
to maximum.
2. Play a favorite tape or compact disc that contains
consistent, dynamic music and turn the source unit’s volume
control up to its maximum level. (NOTE: Some source units
will produce distortion or “clip”, before or when their
volume controls are turned all of the way up. If this happens,
you will hear distortion even at low levels when you connect
the rest of the system. If this is the case, lower the source
unit’s volume level until you no longer hear distortion.)
With the source unit’s volume up high, the volume control
on the FOUR.1
i
will be the master volume control.
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