Specifications
67
Amplifiers – Technologies
Multi-Channel Amplifiers
Clarion’s multi-channel amplifiers provide four 
channels of amplification from one chassis and 
are equipped with on-board high-pass/low-pass 
electronic crossovers. This configuration pro-
vides maximum system flexibility. For example, 
the front channels can drive full-range speakers 
with front crossovers off, while rear channels are 
set to low-pass and bridged to drive a single 
subwoofer. Or the front channels can be set to 
high-pass to drive a pair of satellites, and rear 
channels set to low-pass to drive a pair of woof-
ers.
The use of a four channel amplifier and their 
active crossovers provides quicker setup times 
and better efficiency. Passive crossover networks 
typically reduce the power arriving at the speak-
ers by 2-4dB.
Amplifier Circuit Information
All of Clarion’s amplifiers contain complex cir-
cuitry in both the input and output sections for 
noise suppression, fast transient response and 
minimum distortion. These circuits include high-
impedance differential input stages, and premium 
devices with very high slew rates. 
High-impedance differential input stages sepa-
rate the input signal ground from the common 
chassis ground. This creates a very effective 
ground-loop isolation circuit that reduces the 
possibility of charging system noise from enter-
ing the signal path. The circuit then compares 
the signal information on the shield to that of the 
center conductor and eliminates any common 
signal (noise), leaving only clear and detailed 
music.
This advanced circuit topology ensures that 
Clarion amplifiers will accurately reproduce all the 
dynamics and subtleties found in today’s digital 
recordings. At the same time, noise suppression 
circuits work to effectively to eliminate induced 
electrical system noise, contributing to maximum 
dynamic range.
Gold-Plated RCA Connectors
Superior conductivity is achieved by using gold-
plated RCA terminals to minimize the contact 
resistance and reduce noise. Moreover, since non-
magnetic gold is not affected by external magnetic 
fields, magnetic distortion is also prevented.
Specifications
Clarion has spent a significant amount of time 
ensuring that our amplifiers provide the best pos-
sible sonic performance. A look at the specifica-
tions associated with any of our amplifiers quickly 
demonstrates this dedication to purist perform-
ance.
Frequency Response
Clarion takes great pride in the fact that our 
amplifiers offer frequency response well beyond 
the audible spectrum. This ensures perfectly 
linear output with no emphasis in any region. 
It also moves the phase shift commonly asso-
ciated with high frequency roll-off out of the 
audible range. The APX4360 and APX2180 fea-
ture 10Hz-50kHz frequency response within 1dB 
- not the usual 3dB rating lesser products use
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