Audiopipe APMR-2002 Owner's Manual page 3

English
The APMR-2002 uses an unregulated MOSFET power supply for superior sound and
output wattage. In addition, a torpid-coil is used to transfer power with minimal performance
loss due to heat. To avoid unwanted noise, a double-sided conformal printed circuit board
with strategically placed components keeps AM RFI subdued.
All of the connections and controls for the APMR-2002 are conveniently located at the
ends of the marine amplifier and labeled appropriately. To ensure the best possible electrical
connections, the power, speaker, and RCA inputs are platinum-plated. An additional benefit
of this marine amplifier is the ability to create a 2, 3, or 4 channel amplified system with
a flip of a switch (see Application section). In the event of component failure or a short
circuit, the APMR-2002 incorporates safe guards and an outboard ATC fuse to prevent
damage to the marine amplifier.
The front panel of the APMR-2002 contains both connections for RCA and speaker level
inputs, along with the audio controls as shown below.
Figure 1
1. CH1 / CH2 RCA Input
2. Gain Control
3. Bass Extender
4. CH1 / CH2 Frequency (Hz)
Gain Controls
This allows you to set the nominal operating level of the marine amplifier. The marine
amplifier's range, 250mV to 2.5V for RCA inputs or 500mV to 5V for speaker level inputs,
can accommodate input levels from virtually any brand of source unit.
Bass Boost Control
The marine amplifier also features a "high-Q" (i.e. narrow frequency band) Bass Boost circuit.
It acts much like an equalizer, with adjustable gain (from 0 to ~18dB) fixed at 45Hz. Use
this feature to tune low-frequency audio response to compensate for a less than ideal
subwoofer enclosure design. The added boost produces rich, full bass tones that are
normally difficult to reproduce in the car audio environment.
NOTE: If Bass Boost is undesired, set Bass Boost to 0dB.
5. Frequency Range Multiplier
6. CH1 / CH2 Filter
7. Output Mode Selector Switch
8. Speaker Level Input
9. Remote
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