DUB Edition DUBa11000D, Руководство по установке и эксплуатации, Страница: 12 / 41

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Troubleshooting
Problem
Possible Cause
turn on
No power to +12V
terminal
Corrective Action
Check fuse(s)
No power to REM
terminal
Check head unit fuse(s) and
wiring
Blown main fuse at
battery
Replace fuse and identify
cause of failure
e lace se and identi
Faulty ground
Volume control too
sensitive
Distorted sound
Input level control
adjusted too high
Input level control
adjusted too high
Blows fuse(s) at amp Power wires connected
backwards
Internal problem with
amp
cause of failure
Re-ground main power
ground to bare metal
chassis
Re-adjust the input level
(refer to page 8)
Re-adjust the input level
(refer to page 8)
Reconnect power wires
properly
Take unit for service
Engine noise /
Alternator whine
Ground loop(s)
Use good quality shielded
RCA cables
Faulty ground at amp
Faulty ground at head
unit
Inductive coupling
Re-ground amp to clean
bare metal chassis
Re-ground head unit to
clean bare metal chassis
Re-route RCA and/or
speaker wires away from
factory harnesses
Input level on amp set
too high Re-adjust input level (refer
to page 8)
Thermal protection
activated
li ier dr iving 1 ohm
load for long durations
frequently while driving
subw o ofers, install fan to
keep amp cool.
Short circuit
protection activated
Check all speakers
Blown speakers
Speaker wire(s) shorting
to ground Check for faulty wiring
Faulty passive crossover
Low impedance
protection activated
Defective crossover
Amp connected to
improper load Check speaker connections
Verify that speakers are
connected properly
Speakers defective/
blown Check speakers
Faulty passive
crossovers Check crossovers
Poor bass response Speakers out of phase hec s ea er olarit
reverse the connection to
one speaker only if two
subwoofers are connected
to the a li ier
Amp will not drive less
than a 1 ohm load
DUB Edition Amplifiers
N O T E : I f th e yel l ow p rotection l igh t is activated w ith no s p eak ers
connected to th e am p l ifier, and al l th e p ow er connections are correct,
th is w oul d ind icate an internal p rob l em w ith th e am p l ifier.
Blown se at a li ier
the a li ier ther als