Troubleshooting - Dual BAK1500 Installation & Owner's Manual

Problem
Unit will not turn on
(no power LED indicator)
Unit has power - LED is
green (but no sound)
Unit blows fuse(s)
Engine noise
Distorted audio output
Low audio output
Weak bass
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OPERATION

Troubleshooting

Cause
BAT+ wire not connected or incorrect voltage
REM wire not connected or incorrect voltage
GND wire not connected
Fuse(s) blown
Volume turned all the way down
Speaker defective or damaged
Input signal not connected
Incorrect fuse rating
BAT+ wire touching chassis ground
Speaker defective or damaged
Bad ground connection
Signal ground loop or RFI (radio frequency
interference)
Incorrect input signal type or
input level too high
Incorrect input signal type or
input level too low
Low frequency output is out of phase
Registration
Please keep your original sales receipt and be prepared to
provide this receipt in the event you require service, as your
original receipt is considered the best proof of purchase and
indicates the date you purchased your Dual product.
Dealer Name
Dealer Phone
Purchase Date
Register your product online at www.dualav.com.
Action
Check connections for proper voltage
(11~16VDC)
Check connection to ground
Replace fuse(s)
Increase volume level at head unit
Check/replace speaker
Check high or low level inputs for
proper connection
Use fuse(s) with correct rating
Check for pinched wire
Check/replace speaker
Make sure amplifier is grounded to
clean bare metal
Re-route RCA cables from existing
high current wiring
Check connections and reduce/adjust
input level
Check connections and increase or
adjust input level
Adjust phase control as needed
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