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Operation/Installation Manual
1
Owner’s Manual
DESCRIPTION
The APX480M uses an unregulated MOSFET power supply for superior
sound and output wattage. In addition, a toroid-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 APX480M are conveniently
located at the ends of the amplifier and labeled appropriately. To ensure
the best possible electrical connections, the power, speaker, and RCA
inputs are gold-plated. An additional benefit of this 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
APX480M incorporates safe guards and an outboard ATC fuse to prevent
damage to the amplifier
INPUT CONNECTIONS
AND AUDIO CONTROLs
The front panel of the APX480M contains both connections for RCA and
speaker level inputs, along with the audio controls as shown below.
1. Front RCA Input Jacks
2. Rear RCA Input Jacks
3. Front Gain Control
4. Rear Gain Control
5. Bass Boost Control
6. Rear Channel Input Selector
7. Front Mode Switch
8. Rear Mode Switch
9. Speaker Level Inputs
10. Front Frequency Control
11. Front X-Over Mode Switch
12. Rear Frequency Control
13. Rear Multiplier Switch
14. Rear X-Over Mode Switch
Figure 1-
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