W W W . P O L K A U D I O . C O M / A M P S
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P O L K / M O M O : C H A M P I O N S H I P P E R F O R M A N C E
25A
25A
25A
25A
25A
25A
25A
25A
Wire Routing Options
For Flush Mount installations (where amp sits directly on solid surface),
route wiring through side vents of end caps BEFORE wiring into the amp.
For Stealth installations, route wiring down through bottom opening under removeable plate.
Typical Installation, continued
For the ground connection, also use the largest gauge cable available. Connect to the terminal
marked GND and then connect this cable directly to your car’s chassis. Keep the length of the
GND connection as short as possible, ideally under 6", to avoid ground loops and engine noise
hum problems. Make certain that the ground point is directly connected to the car’s metal
chassis, with no dirt or paint getting in the way of a clean metal-to-metal connection.
7. SECURELY install the amplifier in your chosen location.
Take the time to secure the amplifier solidly so that it does not come loose in the event of a
collision or sudden jolt to the vehicle. Warning: Low Flying Amp!
8. CONNECT the positive and negative power wires to the amplifier. A fuse near the amplifier
is not necessary.
9. CONNECT the remote turn-on wire to the amplifier.
10. CONNECT the RCA signal input cables to the amplifier.
11. CONNECT the speaker wires to the amplifier.
Make sure to use speaker wire of at least 16 gauge or thicker.
Be certain to maintain correct polarity. One of the terminals on the rear of your speaker is posi-
tive (+) and the other is negative (-). Make certain that you connect the wire from the positive
(+) terminal of your amplifier to the positive (+) terminal on your speaker, and the wire from
the negative (-) terminal of your amplifier to the negative (-) terminal on your speaker. Most
speaker wire has some indicator (color code, ribbing, or printing) on one of the two wires to
help you maintain consistency.
Make certain that no bare wire ends touch each other. Such contact could result in an electri-
cal short and cause your head unit or amplifier to turn off or malfunction.
12. Carefully review the amplifier’s control settings to make sure that they are set according to the
needs of your system.
13. Now install the power wire fuse and reconnect the negative battery post terminal. (See your
authorized Polk AutoSound Dealer for professional advice on fuses and circuit breakers.)
14. Turn on the head unit at low level to check that the amplifier is configured correctly. Resist the
temptation—RESIST!—to crank it up until you have verified the control settings and made
your fine tunings.
15. Make the necessary adjustments to the input sensitivity to obtain the right overall output
balance between other amps in your system.
ADDITIONAL STEPS AND DIFFERENT PROCEDURES MAY BE REQUIRED IN SOME APPLICA-
TIONS. IF YOU HAVE ANY QUESTIONS, PLEASE CONTACT YOUR AUTHORIZED POLK AUDIO
AUTOSOUND DEALER OR POLK AUDIO CUSTOMER SERVICE.
