Inputs and Outputs
V12 AccuClass-D Mono Amplifier:
The V12 AccuClass-D amplifier design allows it to deliver massive power without
correspondingly huge current draw.
Hood: The amplifier
has a metal hood that flips up to reveal the control panel. The control panel
consists of five buttons, Display, Mode, Enter, <, and >. These buttons
are used to navigate the menu that includes all the adjustments on the amp
(input level, crossover, EQ, time correction, phase, etc).
Verification Certificate: The
amplifier comes with a certificate that informs you of the total RMS output of the particular
amplifier. It lists the model number, serial number, test
date, and the test conditions (voltage, impedance). The unit we opened measured
574.6 watts RMS into 2 ohms at 14.4 volts.
Display: The digital display
can be switched between input voltage, current draw, and internal temperature in
Celsius or Fahrenheit.
The sub-sonic filter is used to filter out low frequencies that you cannot hear
but can "rob" power from the amplifier. The crossover point is
variable between 15Hz and 50Hz in 5Hz steps.
Built-in Variable Electronic
Crossover: The built-in low-pass crossover is adjustable from 30 to 200Hz in
1/12 octave steps with a slope of 24dB/octave.
Parametric Equalizer: A fully
adjustable parametric EQ is built into this amp. The center frequency is
adjustable from 30 to 160Hz in 1/12 octave steps. The Q value of the EQ curve is
selectable between 0.5, 1, 2, 3, 4, and 5. The EQ level is adjustable from -12dB to
+12dB in 1dB steps.
Bass Compensation: The Bass
Compensation circuit is used to enhance low-end bass definition.
Time Correction: Time
correction allows you to time align this amp with others in the system. This is
particularly useful to maximize SPL if there are multiple subs and sub amps. The
adjustment range runs from 0-10ms in 0.1ms steps.
Phase: The phase is selectable
between 0 and 180 degrees.
Multi Amp Installation: Because
the above adjustments are all digital and discrete, two of these amplifiers can
be used to power the two voice coils of a DVC woofer (technically this is true
of any amp, but with analog adjustments an oscilloscope is needed to ensure the
outputs are identical).
Amplifier ID: Alpine makes a
Remote Amplifier Control Center (RACC) that will control up to eight V12
AccuClass-D amplifiers. For this reason each amp needs its own ID when more than
one amp and the RACC are used.
Turn On Delay: The time it
takes the amp to turn on is adjustable. This is useful for eliminating turn on
Safe Mode: The Safe Mode turns
off the power output of the amp while leaving the control functions active. This
might be used as a valet function.
Memory: All the settings on the
amp can be stored in memory for easy return to your preferred values.
Protection Circuitry: The
protection circuitry guards against accidents and undesired operation. Included
circuit, Over-voltage, and Thermal overload.
Top of Amplifier: The control
panel consists of five buttons, Display, Mode, Enter, <, and >. These
buttons are used to navigate the menu that includes all the adjustments on the
amp (input level, crossover, EQ, time correction, phase, etc).
Front of Amplifier:
- Battery (+12 V):
gold-plated set-screw terminal that will accept up to 4 gauge wire
- Remote (turn-on):
gold-plated screw terminal that will accept up to 10 gauge wire or a
spade up to 0.355" wide
- GND (ground):
gold-plated screw terminal that will accept up to 4 gauge wire
- Speaker Output:
gold-plated screw terminals that will accept up to 8 gauge speaker wire or a
spade up to 0.5" wide
- RCA Input: gold-plated
RCA line input jacks
- RCA Output: gold-plated
RCA line output jacks
- Controller: DIN plug for
connection of remote controller
Rating (measured at 14.4V):
- Into a
4-Ohm Load: 250
watts x 1
- Into a 2-Ohm Load: 500 watts x 1
Rating (measured at 12.0V):
- Into a
4-Ohm Load: 200
watts x 1
- Into a 2-Ohm Load: 400
watts x 1
impedance is 2 Ohms.