Dual XPR owner manual Troubleshooting, Problem Cause Action

Page 11

Troubleshooting

Problem

Cause

Action

 

 

 

 

+12V wire not connected or incorrect voltage

Check connections for proper voltage

Unit will not turn on

REM wire not connected or incorrect voltage

(11~16VDC)

(no power LED indicator)

GND wire not connected

Check connection to ground

 

 

 

 

Fuse(s) blown

Replace fuse(s)

 

Speaker wires not connected

Check connections at speakers

 

Volume turned all the way down

Increase volume level at head unit

Unit has power - LED is

One or more speaker wires touching each

Insulate all bare speaker wires from each

other or touching chassis ground

other and chassis ground

blue (but no sound)

 

 

Speaker(s) defective or damaged

Check/replace speaker(s)

 

 

Input signal not connected

Check high or low level inputs for proper

 

connection

 

 

 

Incorrect fuse rating

Use fuse(s) with correct rating

Unit blows fuse(s)

+12V wire touching chassis ground

Check for pinched wire

 

Speaker(s) defective or damaged

Check/replace speaker(s)

 

Bad ground connection

Make sure amplifier is grounded to clean

 

bare metal

Engine noise

 

Signal ground loop or RFI (radio frequency

Re-route RCA cables from existing high

 

 

interference)

current wiring

 

One or more speaker wires touching each

Insulate all bare speaker wires from each

 

other or touching chassis ground

other and chassis ground

LED illuminates red

Speaker(s) defective or

Check/replace speaker(s)

(protect mode)

damaged internally (shorted)

 

 

Speaker load less than 2 ohms (stereo)

Adjust speaker load - amplifier will not

 

Speaker load less than 4 ohms (bridged)

operate at less than 4 ohms when bridged

Distorted audio output

Incorrect input signal type or

Check connections and reduce/adjust input

 

input level too high

level

Low audio output

Incorrect input signal type or

Check connections and increase/adjust

input level too low

input level

 

Weak bass

Speaker(s) are wired out of phase

Check (+) and (-) speaker connections

(Observe correct polarity)

 

 

11

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Contents XPR Series Mobile Power AmplifiersMounting Location PreparationBefore You Start Connection Descriptions XPR540 Audio Inputs and ControlsXPR522 Power and Speaker Connections Fuse Rating Typical Wire RoutingMain Power Connections Power/Ground Wire SizeSpeaker Connections Input Signal Connections Low Level Input RCAHigh Level Input Speaker Wire Amplifier ConnectionsInput level Control Configuration/SetupCrossover Mode Bass Boost LED IndicatorWhat to do? Limited One-Year WarrantySpecifications Problem Cause Action TroubleshootingDual Electronics Corp Toll Free

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