Class D Amplifier Design: The KAC-8105D 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-8105D 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 2-ohm.
CEA 2006 Compliant: The KAC-8105D'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. CEA 2006 Compliant Ratings:
- Mono-Channel (4-ohm): 300 watts x 1
channel RMS (20-200 Hz, 1% THD)
- Mono-Channel (2-ohm): 500 watts x 1
channel RMS (100 Hz, 1% THD)
Note: This amplifier is not designed
to power a full-range speaker.
Cast Aluminum Heat Sink: The Kenwood KAC-8105D utilizes a
cast aluminum heat sink design to ensure that the amplifier stays at its optimal
Ventilation: There are 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 when you install the
Protection circuitry: 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 speaker output
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.
Gain:To accommodate the varying range of signal levels coming
from today's factory and aftermarket radios, the Kenwood KAC-8105D 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-8105D 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 40Hz.
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-8105D is equipped with a
single pair of speaker terminals. Both 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 inputs.
Speaker Level Input: The KAC-8105D 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
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-8105D is equipped with two 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.