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5-Channel Design: The JVC KS-AX3205D is made up of three
sections, two full range stereo amps (front and rear) and a mono subwoofer amp.
The front and rear amps are independently bridgeable, meaning the KS-AX3205D can
be used as a 5-channel, 4-channel, or 3-channel amp. The minimum impedance for
all channels is 2Ω (4Ω when the full range sections are bridged).
CEA-2006 Compliant: CEA-2006 is a system of testing and
measurement methods for mobile audio amplifiers. This voluntary standard
advocates a uniform method for measuring an amplifier's RMS power output and
signal-to-noise ratio. The criteria for measuring power uses a DC input voltage
of 14.4 volts and the RMS power output is measured with 1% or less Total
Harmonic Distortion plus noise (THD+N) over a frequency range of 20 Hz to 20 kHz
(for full range amplifiers). Signal-to-Noise ratio is measured in weighted
absolute decibels (dBA) at a reference of 1 watt into 4Ω. CEA-2006 allows
consumers to compare car amplifiers and receivers on an equal basis. Using
CEA-2006 criteria, the JVC KS-AX3205D is rated as follows:
- Power Output:
- 4Ω: 50 watts x 4-channels (full range) + 200
watts x 1-channel (subwoofer)
- 2Ω: 65 watts x 4-channels + 300 watts x
- Bridged: 130 watts x 2-channels (full range
channels into 4Ω)
- Signal to Noise Ratio: 60 dBA
Crossover: The front, rear, and subwoofer sections of the
amplifier have independent crossovers. The front and rear crossovers have a 12
dB/octave slope and can be set to high-pass or off (full range). The subwoofer's
low-pass crossover is always engaged and has an 18 dB/octave slope. The crossover
point for all three is continuously variable from 50 Hz to 200 Hz.
Bass Boost: The subwoofer amplifier has a bass boost circuit
centered at 45 Hz, continuously variable from 0 to +18 dB.
Input Mode: Select the 5ch position if your source unit has
a dedicated subwoofer output (in addition to front and rear), otherwise select
the 4ch position.
Power Connections: The power and ground terminals are nickel-plated
screw terminals. They will accept spade connectors or ring terminals up to 0.5"
wide. The remote turn-on terminal will accept a spade connector or ring terminal
up to 0.35" wide.
Speaker Connections: The speaker outputs are also nickel-plated
screw terminals and will accept spade connectors or ring terminals up to 0.35"
Speaker Level Input: A 4-channel speaker level input harness is
included, making it easier to add an amplifier to a factory radio or to a receiver
with no preamp outputs.