Description, Input Connections and Audio Controls

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.

Figure 1-

INPUT

,GAIN,

EX~:~gER

CH1/2-MODE-CH3/4

POOWER

}:~~~r~

CH1

CH3

CH1/2

CH3/4

CH1/2

'~t

CH1/2

CH1

,~:.~:

~ ~

:':~:':~d,:~ ~H

~. c"EJil

'~4

2CH

STEREO

MONO

• e CH3

2CHre-IN e e

BASS

MONO

",1" MONO

CH1 (BV~E~INPUT

:@CH4

la~ a~

CH1/2 FREQ CH1/2 FILTER

CH3/4FREQ -

RANGE- CH3/4 FILTER

c,,4i:

• e

\!)

.110

LP HP OFF

55 .110

LP HP OFF

•

(£)

CH2

CH4

:Q'"t:Jj]

:Q'"0:::::. rn

(£)

C;1::::E:~~~~~~~~=t=~=I=~=t====1F==~F==~:::::::E~=:I~

1. CH 3/4 Speaker Level Input

9. CH 3/4 Mode Switch

CH 1/2 RCA Level Input

10. CH 1/2 Speaker Level Input

CH 3/4 RCA Level Input

11. CH 1/2 Frequency Control

CH 1/2 Gain Control

12. CH 1/2 Crossover Mode Switch

CH 3/4 Gain Control

13. CH 3/4 Frequency Control

CH 1/2 Bass Extender

14. Frequency Range Multiplier

Source Select

15. CH 3/4 Crossover Mode Switch

CH 1/2 Mode Switch