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Clarion
APX480M
Power
System
Amplifier
The RCA connections are gold plated for optimum performance and low sig-
nal loss. The RCA connectors are labeled CH 1 (front left), CH 2 (front right),
CH
3 (rear left), and CH 4 (rear right).
In
applications where RCA signals are
not present, the speaker level output from the head unit can be used. (Use
one or the other input, not both.)
• Gain
Controls
- Separate CH 1/2 and CH 3/4 gain controls allow you to set
the nominal operating level
of
the amplifier. The amplifier's input range,
250mV to 2.5V for RCA inputs and 500mV to 5V for speaker level inputs, can
accommodate input levels from virtually any head unit.
e
Bass
Extender
- The amplifier features a "high-Q" (i.e. narrow frequency
band) Bass Boost circuit. It acts much like an equalizer with an adjustable
gain from 0 to +18dB fixed at 45Hz. Use this feature to tune low-frequency
audio response to compensate for a less than ideal subwoofer enclosure
design. The added boost produces rich, full bass tones that are normally
difficult to reproduce
in
the car audio
environment
NOTE: If bass boost is
undesired, set Bass Extender to
OdS.
•
Source
Select
2 CH BASS: Uses CH 1/2 inputs and has output from all 4 channels with
Bass Extender.
2 CH: Uses CH 1/2 inputs and has output from all 4 channels. The Bass
Extender will work only on
CH
1/2 and have no effect on
CH
3/4.
4 CH: Uses all 4 channel inputs and has output from all 4 channels. The
Bass Extender will work only on
CH
1/2 and have no effect on
CH
3/4.
•
Output
Mode
Selector
Switch:
(CH 1/2
and
CH 3/4)
STEREO: Full left and right stereo operation.
CH 1Mono / CH 2 Mono: Single channel input for bridged operation. This
is
especially useful
in
high-powered systems. (Uses
CH
2 and CH 4 inputs.)
CH
1/2 Mono / CH 3/4 Mono: Allows for a stereo input to be summed into a
mono output.
• CH 1/2 FREQ / CH 3/4 FREQ
..
The CH 1/2-crossover frequencies are
adjustable from 55Hz to 550Hz. While CH 3/4-crossover frequencies are
adjustable from 55Hz to 5500Hz (via the Frequency Range Multiplier) for a
wider range
of
crossover points. Use this feature along with your speaker
manufacturer's recommended crossover frequencies to quickly design a
more advanced system.
NOTE: If either
of
the Crossover Mode Switches is
set to OFF, varying the frequency control will have no effect.
• CH 1/2
Filter
I CH 3/4
Filter
- A filter is activated by sliding the CH 1/2 and
CH 3/4 filter switch to either HP or
LP.
CH 1/2 is fully adjustable from
55-550Hz (via CH 1/2 Freq) and CH 3/4
is
fully adjustable from 55-5500Hz
(via CH 3/4 Frequency and Frequency Range Multiplier). Use this feature
along with your speaker manufacture's recommended crossover
frequencies to design a more advanced system.