Inputs and Outputs Notes
V12 AccuClass-D Mono Amplifier:
The V12 AccuClass-D amplifier design delivers massive power without
correspondingly huge current draw. This amplifier's true digital design keeps
the signal purer and makes the amp extremely efficient (approximately 80%). V12 AccuClass-D amps use
digital signal processing to adjust input gain, crossover point, and Bass EQ, all controlled
using the Alpine Digital Control Center located under
the top-mounted access panel.
Hood: The amplifier has a
hinged brushed aluminum hood that flips up to reveal the control panel and LCD display. The control panel consists of
three buttons: Mode, Up (>), and Down (<). These buttons are used to
navigate the menu which includes all the adjustments on the amp. When closed,
the LCD display is visible through the plastic window. Two Allen-head screws
secure the hood.
Display: The MRD-M605
features a blue backlit display that allows you to monitor the DC input voltage
or the internal temperature
(Fahrenheit or Celsius). The display is also used when adjusting the Amp ID,
input gain, crossover point, and bass EQ.
Verification Certificate: The
amplifier comes with a certificate that specifies the measured total RMS output of
the particular amplifier. It lists the model number, serial number, test date,
and the test conditions (voltage, impedance).
Bass EQ: A bass boost is
available at 45 Hz. The boost level is adjustable from 0 to 16 dB in 2 dB steps.
Built-in Variable Crossover:
The built-in low-pass crossover is adjustable from 30 to 200Hz with 13 settings
(30, 38, 45, 53, 60, 72, 85, 95, 110, 125, 140, 170, and 200 Hz). The slope is
switchable, 12dB/octave or 24dB/octave.
Subsonic Filter: The
filter is used to remove low frequencies that you cannot hear but can
"rob" power from the amplifier. The crossover point is switchable
between 15Hz and 30Hz, and can be turned off.
Multi-Amp Installation: Because
the above Bass Engine adjustments are all digital and discrete, two of these amplifiers can
be used to power the two voice coils of a DVC woofer. Note: Technically this is true
of any amp, but with analog adjustments an oscilloscope is needed to ensure the
outputs are identical.
amplifier has a 3-way protection
circuitry to guard against damage from undesired conditions. It includes
protection for Short
circuit (excessive current), Over-voltage, and Thermal overload. When the amplifier goes into
protection mode, the LCD display shows an Error code explaining the cause of
Inputs and Outputs
Notes Battery (+12 V)/Ground (GND): The
Battery and Ground terminals are
set-screw terminals that will accept up to 4 gauge wire.
A 4mm Allen wrench is included to tighten/loosen the set screws.
Remote (turn-on): The remote
terminal is a set screw terminal that will accept up to 8 gauge wire. A 2.5mm
Allen wrench is included to tighten/loosen the set screws.
Speaker Output: The speaker
terminals are set-screw terminals that will accept up to 8 gauge
wire. The same 2.5mm Allen wrench is used for this terminal.
RCA Input/Output: The amplifier
includes gold-plated RCA
line input jacks and gold-plated RCA
line output jacks, there is no speaker-level input.
Amplifier Link: The amp has a
female DIN jack for connection to a 2005 or newer receiver with Amplifier Link controls.
The Amp Link feature on the new amplifiers is not backward compatible with pre
2005 receivers. An Alpine KCE-511M cable is needed to connect the amp to a compatible
receiver. Up to 8 Amp Link compatible amplifiers can be controlled by the
receiver using KWE-061M "Y" adapters.
CEA-2006 Compliance: The
specifications given by Alpine for the MRD-M605 amplifier comply
with the new CEA-2006 Amplifier Power Standard from the CEA (Consumer
Electronics Association). All manufacturers who comply with the
standard can display the CEA-2006 logo on their product.
RMS Power Rating
(measured at 14.4V):
- Into a
4-Ohm Load: 400 watts x 1
- Into a 2-Ohm Load: 600 watts
Note: Minimum impedance is 2