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For the APA4400 and APA4200, the gold-plated RCA stereo input jacks
are labeled as L/R INPUT | (front) and INPUT 2 (rear). On the APA2100
2-channel amplifier, stereo inputs are labeled as L INPUT and R INPUT
(with only the L INPUT being active when CHANNELS is set to MONO).
Stereo GAIN controls are located next to each set of inputs. Triangular
markings denote optimum gain settings when interconnecting an optional
'PEQ2040 2-channel, 4-band parametric equalizer.
All three models have an additional set of jacks labeled as L/R PREOUT.
For the APA4400 and APA4200 amplifiers, the LYR PREOUT jacks carry
full-frequency signals present on INPUT 1. As an application, you can use
this convenient feature instead of "Y" connectors to route INPUT 1 audio
to another amplifier.
The speaker terminals on all models are gold-plated with markings for
LEFT/RIGHT and BRIDGED (mono) connections. For the APA4400 and
APA4200, there are additional markings that describe connections for 4-,
3-, and 2-channel operation.
The power terminals on all models are also gold-plated power and are
labeled as REMOTE (remote turn-on), GROUND, and BATTERY
(+12 Vdc). External automotive-type fuses protect amplifier circuits. The
_APA4400 uses two 30 A fuses, the APA4200 is protected by a single
30 A fuse, and the APA2100 uses a 20 A fuse.
All models include two indicators. POWER GUARD lights whenever the
— distortion limiting circuit is active. POWER confirms that de power is
reaching the amplifier.
APPLICATIONS
The Clarion APA4400, APA4200, and APA2100 car audio amplifiers can be
used ina variety of system applications. We've enclosed several example
systems to help plan your own installation (see Figures 6 through 12).
4-Channel Full-Range Stereo System
Rear Panel Settings
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Figure 6. In this application, an APA4400 is used as a 4-channel
amplifier that drives four full-range stereo speakers at 100 watts per
channel. Using an APA4200 provides 50 watts per channel.
4-Channel Stereo System
2-Ch High Pass, 2-Ch Low Pass
Rear Panel Settings
(Each satellite requires
an external passive
crossover network)
Right Front Satellite
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APA4200
Figure 7. In this 4-channel system, an APA4400 (or APA4200) drives a
pair of stereo satellites for the front and a pair of stereo subwoofers for
the rear. Note the filter settings for this application.
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