Description; Input Connections And Audio Controls - Audiopipe APMR-1504 Owner's Manual

English
The APMR-1504 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-1504 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-1504 incorporates safe guards and an outboard ATC fuse to prevent
damage to the marine amplifier.
The front panel of the APMR-1504 contains both connections for RCA and speaker level
inputs, along with the audio controls as shown below.
Figure 1
1. CH1 / CH2 RCA Level Input
2. CH3 / CH4 RCA Level Input
3. CH1 / CH2 Gain Control
4. Remote
5. CH3 / CH4 Gain Control
6. CH1 / CH2 Bass Extender
7. Speaker Level Input
8. Source Select
9. CH1 / CH2 Mode Switch
10. CH3 / CH4 Mode Switch
11. CH1 / CH2 Frequency Control
12. CH1 / CH2 Crossover Mode Switch
13. CH3 / CH4 Frequency Control
14. Frequency Range Multiplier
15. CH3 / CH4 Crossover Mode Switch
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