Rockford Fosgate OEQ2 HIGH, Руководство по установке и эксплуатации

Страница: 26 / 40

Symptom Diagnosis Remedy
Check connections and bypass
additional components (cross-
overs and preamps) between
the source unit and the ampli-
fier. Connect one component
at a time using muting plugs
(RCA signal shorted to shield)
at the input of each added com-
ponent to determine the cul-
prit. Repair or replace compo-
nents as necessary.
Check ground connections
and connect amplifiers, signal
processors, and other compo-
nents to a central location or
try a different grounding point
on the chassis.
Use only RCA or BLT input at
one time.
Remove the cover from the
OEQ
2
and locate jumper J1,
labeled DGND and AGND,
next to the transformer (round
donut with wires). This jumper
applies ground to the chassis
of the OEQ
2
. There are three
possible connections:
A. No Jumper Connection –
no ground applied to the
chassis
B. DGND – power supply
ground applied to chassis
C. AGND – RCA shield ap-
plied to chassis
Experiment with these jumper
configuration options until a
reduction in noise is observed.
Select the Signal Input Switch
for “BAL” input.
– 23 –
Engine Noise
• If noise persists, see your Authorized Rockford Fosgate Dealer.
TROUBLE- S
H
O
O
T
I
N
G
Bad component in the
signal chain.
Multiple grounds in the
audio system.
RCA and BLT inputs are
utilized simultaneously.
Noise is entering the
system via a possible
ground loop.
Jumper Placement
Diagrams
Engine Noise
(BLT Input)
Signal Input switch not
selected for BLT input.
•
•
•
•
•
•
•
•
•
A.
DGND
Chass
AGND
DGND
Chass
AGND
DGND
Chass
AGND
C.
B.