Class D Amplifier Design: The KAC-9105D is a Class D
mono-block amplifier, which uses digital switching to amplify audio signals.
This design results in high efficiency and less heat.
MOSFET Switching Power Supply: The amplifier utilizes a
MOSFET switching power supply providing thermal stability and efficient
switching speeds guaranteeing performance and dependability.
Mono-Power Amp Design: The Kenwood KAC-9105D is designed
with specific features to power your subwoofers with a frequency range between
10-200 Hz. The amplifier can handle impedance loads down to 1-ohm.
CEA 2006 Compliant: The KAC-9105D's power ratings are
measured according to the strict standards dictated by the Consumer Electronics
Association (CEA). These standards allow you to accurately compare the rated
power output of all CEA 2006-compliant amplifiers, even if they come from
different brands. Manufacturers who adhere to the standards can display the CEA
2006 logo on their products and packaging. Amplifier Power Ratings:
- Mono-Channel (4-ohm): 500 watts x 1 channel RMS (20-200 Hz, 1% THD)
- Mono-Channel (2-ohm): 900 watts x 1 channel RMS (100
Hz, 1% THD)
- Mono-Channel (1-ohm): over 900 watts x 1 channel
- Peak Power: 1800 watts x 1 channel
Note: This amplifier is not designed to power a full-range
Cast Aluminum Heat Sink: The Kenwood KAC-9105D utilizes a cast aluminum heat sink design to ensure that the amplifier stays at its optimal temperature.
Fan Cooled: There are two fans and two vents located on the
back side of the amplifier to help dissipate heat and ensure cool, reliable
operation. Make sure not to block these vents or fans when you install the
The amplifier features protection circuits that will turn the amp off in case of
the following events:
- Speaker output contacts ground
Speaker wire short-circuits
Unit malfunctions and DC is sent to
Aluminum Cover Plate: The amplifier's controls and connections are
hidden under a removable extruded aluminum cover plate. The cover plate provides
a professional looking installing while helping to protect the amplifier's
connections and control settings. The cover is held in place by two hex head
screws. An allen-wrench is supplied to remove the cover.
Blue/Red Illumination: The Kenwood Mono-Channel amplifier features a
blue and red LED illumination when the amplifier is turned on. When the power is
turned on to the amplifier, the Power indicator will light up red. This
indicator will turn off with the amplifier and will turn off if the amplifier
goes into protect mode. The amplifier also features a Blue LED lamp on the top
of the amplifier which illuminates when the amplifier is on.
Signal-sensing Turn-On Circuitry: When the speaker-level
input is used, it is not necessary to connect the power control wire (turn-on
lead). The amplifier senses the signal from the speaker-level input and turns
the amplifier power on automatically. Shortly after no signal is detected, the
amplifier will automatically shut itself off.
accommodate the varying range of signal levels coming from today's factory and
aftermarket radios, the Kenwood KAC-9105D features an adjustable, independent gain control
(0.2-5.0V). This means that no matter what kind of radio is connected to this
amplifier, the appropriate gain control adjustment can be made to ensure loud,
clear, distortion-free music.
Low-Pass Filter: The KAC-9105D has a built-in 24dB/octave
low-pass filter that is continuously variable from 50Hz to 200Hz.
Bass Boost: The bass boost is adjustable from 0-18dB at
Phase Switch: This amplifier is equipped with a 2-way phase
switch. You can choose 0° (normal phase) or 180° (reverse phase), whichever
position results in stronger performance for the subwoofer.
Infrasonic Filter: This amp features an 18dB/octave
Infrasonic Filter. Ultra-low frequencies that cannot be reproduced by a
subwoofer do not become sound but become unnecessary oscillations, which affect
sound by causing distortion. These frequencies also waste amplifier power and
can cause damage to speakers. Setting the Infrasonic filter switch to 15Hz or
25Hz cuts the frequencies below the respective frequency to improve the
reproduction performance of the speakers by eliminating harmful distortion.
Power Connections: The power and ground connections are
0.5625" wide screw terminals that will accommodate up to 4-gauge wire. The
remote turn-on terminal is 0.3125" wide and will accept up to 8-gauge wire. A
Phillips-head or flat blade screw driver (not supplied) is required to
tighten/loosen the terminals. Spade connectors are recommended for the power,
ground, and remote wires.
Speaker Outputs: The Kenwood KAC-9105D is equipped with two
pairs of gold-plated speaker terminals for an easy parallel subwoofer
connection. All four speaker terminals are 0.3125" wide screw terminals and will accommodate up to 8-gauge wire. A Phillips-head or flat
blade screw driver (not supplied) is required to tighten/loosen the terminals.
Spade connectors are recommended for the speaker wires.
Line Level Input: The mono-channel amplifier is equipped with a single pair of gold-plated RCA line level
Speaker Level Input: The
KAC-9105D comes with a two channel speaker level input harness. Once you splice
the 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 to 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 pair of gold-plated
RCA line level outputs for feeding a full-range stereo signal to another
amplifier. It is the same signal that is input through the line inputs. The
amplifier's crossovers have no effect on the line level output signal.
Fuses: The KAC-9105D is equipped with three 30 amp ATO blade fuses.
Warranty Note: This refurbished Kenwood product carries a 90-day warranty
when purchased from Crutchfield. Kenwood offers Crutchfield customers an extra
60 days extended warranty beyond the 30-day Kenwood Limited Warranty for
Refurbished Product that comes in the box.