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Features
Inputs and Outputs
Controls
Additional Specifications
Features
Multi Channel: The
KAC-8402 is a 4-channel amplifier, essentially two stereo amplifiers
(referred to as Amp A and Amp B) in one chassis.
Line Level Inputs: Amplifiers
A and B each have separate line-level RCA inputs with independent gain (Input
Sensitivity) controls. The
Input Sensitivity controls will accept an input signal of 200mV to 5.0 Volts. If
you are using a receiver with only one pair of preamp outputs, a switch
allows you to feed both Amp A and B with a single stereo input. When the amplifier switch is in the A input only position, the fader control
on the radio will not allow fading between Amplifiers A and B.
Speaker Level Input: The
KAC-8402 comes with a 4-channel speaker level input harness. Once you splice
the front and rear speaker wires from the receiver to the harness, you have
plug-in convenience to the amplifier. This feature makes it easier to add an
amplifier to a factory radio or a receiver with no preamp outputs. The maximum
power output from the source receiver can be no more than 40 watts.
Line Level Output:
The amplifier has a line level output for feeding a full-range signal to another
amplifier. The output is always stereo regardless of the position of the Operation
(stereo/mono) switch.
Crossovers: The
KAC-8402 has built-in crossovers for both the A and B sections. Amplifier A's crossover
is high pass at 12 dB/octave and is
continuously variable from 50Hz to 200Hz. Amplifier
B's crossover can be set to high pass or low pass. The high pass option, like
Amplifier A, is 12 dB/octave and is continuously variable from 50Hz to 200Hz.
The low pass option is also continuously variable from 50Hz to 200Hz but has an
18 dB/octave slope.
Bass Boost: A
fixed bass boost of 6dB at 90Hz can be engaged for Amplifier B only. There is no
bass boost for Amplifier A.
Stereo/Mono Operation: You
can independently switch Amplifier A and Amplifier B from Stereo to Mono
operation. When switched to Mono, the signal from the left channel
input only is used.
Protection circuitry:
The amplifier features protection circuits that will shut the amp down in case of
the following events:
- Speaker output contacts ground
- Speaker wire short-circuits
- Unit malfunctions and DC is sent to
speaker output
- Internal temperature is too high
- Loss of ground of head unit or amp
Inputs
and Outputs
Front of the Amplifier
- Fuse: 40
amp
- BATT (Power):
Screw terminal (0.55" wide)
- GND (Ground):
Screw terminal (0.55" wide)
- P.CON (remote turn-on):
Screw terminal (0.33" wide)
- Speaker outputs:
Screw terminals (0.33" wide)
-
GND: Phillips-head
screw for RCA signal ground
-
Speaker-level input:
Multi-pin input for use with included speaker level input harness
-
A and
B line-in jacks: Two
pair of RCA inputs
-
Line out jacks:
One pair RCA outputs that provide a summed signal from the "A" and
"B" sets of line inputs
Controls
Top of the Amplifier
- Input Selector:
A/A&B
- Amp A Crossover:
High Pass/Off
- Amp A Operation Mode:
Stereo/Mono
- Amp A High Pass
Frequency: 50-200 Hz
- Amp A Input Sensitivity:
200 mV-5 V
- Amp B Crossover:
High Pass/Low Pass/Off
- Amp B Operation Mode:
Stereo/Mono
- Bass Boost (Amp B only):
On/Off
- Amp B High Pass
Frequency: 50-200 Hz
- Amp B Low Pass Frequency:
50-200 Hz
- Amp B Input Sensitivity:
200 mV-5 V
Additional
Specifications
CEA-2006 Compliant: CEA-2006 is
a new system of testing & measurement methods for mobile
audio amplifiers. This voluntary standard advocates a uniform method for
determining 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 into a 4-ohm load, with 1% or less Total
Harmonic Distortion (THD) plus noise, and at a frequency range (for full range
amplifiers) of 20 Hz to 20,000 Hz.
Signal-to-Noise
ratio is measured in weighted absolute decibels (dBA) at a reference of 1 watt
into 4 ohms. CEA-2006 allows consumers to compare car amplifiers and receivers
on an equal basis.
Power:
Using the CEA-2006 guidelines above, the power output of the KAC-8402 is 60
watts RMS x 4 channels.
Kenwood also lists the following specifications:
- Rated power output at
2 ohms: 90 watts x 4 (1 kHz,
0.8% THD)
- Rated power output at
4 ohms, bridged: 180 watts x 2
(1 kHz, 0.8% THD)
-
Input impedance:
10k ohms
-
Operating voltage:
14.4 V (11-16V allowable)
-
Current consumption:
40A
