Dual XPA2500, XPA4640 Troubleshooting, Problem Cause Action, Dual Electronics Corp Toll Free

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XPA SERIES OPERATION

Troubleshooting

Problem

Cause

Action

 

 

 

Unit will not turn on

+12V wire not connected or incorrect voltage

Check connections for proper voltage

(no power LED indicator)

REM wire not connected or incorrect voltage

(11~16VDC)

 

GND wire not connected

Check connection to ground

 

 

 

 

Fuse(s) blown

Replace fuse(s)

Unit has power - LED is

Speaker wires not connected

Check connections at speakers

green (but no sound)

Volume turned all the way down

Increase volume level at head unit

 

 

One or more speaker wires touching each

Insulate all bare speaker wires from each

 

other or touching chassis ground

other and chassis ground

 

Speaker(s) defective or damaged

Check/replace speaker(s)

 

 

 

 

Input signal not connected

Check high or low level inputs for proper

 

 

connection

 

 

 

Unit blows fuse(s)

Incorrect fuse rating

Use fuse(s) with correct rating

 

+12V wire touching chassis ground

Check for pinched wire

 

Speaker(s) defective or damaged

Check/replace speaker(s)

Engine noise

Bad ground connection

Make sure amplifier is grounded to clean

 

 

bare metal

 

Signal ground loop or RFI (radio frequency

Re-route RCA cables from existing high

 

interference)

current wiring

LED illuminates red

One or more speaker wires touching each

Insulate all bare speaker wires from each

(protect mode)

other or touching chassis ground

other and chassis ground

 

Speaker(s) defective or

Check/replace speaker(s)

 

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)

 

 

 

Dual Electronics Corp.

Toll Free: 1-866-382-5476

www.dualav.com

©2008 Dual Electronics Corp.

NSA0608-V01

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Contents XPA Series Preparation Before You StartMounting Location Ground Wire GND Remote Turn-on Wire REMSpeaker Wires Input SignalPower and Speaker Connections XPA2500 XPA4640Audio Inputs and Controls Typical Wire Routing Power/Ground Wire SizeFuse Rating Amplifier Connections Speakers stereoSubwoofer mono XPA2500 speaker connections shownConfiguration/Setup Bass Boost LED IndicatorInput level Control Limited One-Year Warranty What to do?Call us toll-free at Mail us at cs@dualav.com Specifications CEA-2006 Power Standard SpecificationsXPA Series Operation Troubleshooting Problem Cause ActionDual Electronics Corp Toll Free

XPA4640, XPA2500 specifications

The Dual XPA2500 and XPA4640 are high-performance amplifiers designed to deliver exceptional sound quality and power in various audio applications, making them ideal choices for audiophiles and professionals alike. Renowned for their robustness and versatility, these amplifiers boast a host of features and technologies that set them apart in the competitive audio market.

The XPA2500 is particularly notable for its impressive power capabilities, providing 2500 watts of peak power. This amplifier is engineered to drive high-performance speakers with ease, ensuring that listeners can experience their music at higher volumes without distortion. Its Class D architecture ensures efficient power consumption, resulting in reduced heat generation while maintaining high-performance output. The XPA2500 is also equipped with an adjustable crossover that enables users to tailor the frequency response to suit their individual needs, further enhancing audio fidelity.

On the other hand, the XPA4640 offers a compelling blend of power and flexibility, delivering 460 watts per channel. This amplifier is particularly suited for both home theater and professional sound applications, capable of handling multi-channel setups with ease. It features a user-friendly interface that allows for straightforward adjustment of gain, making it accessible for both novice and experienced users. The XPA4640 also excels in connectivity options, featuring multiple input channels to facilitate integration with various audio sources.

Both models incorporate advanced technologies such as discrete MOSFET output stages and high-current power supplies, ensuring reliable performance under demanding conditions. They are also designed with thermal management systems to prevent overheating, thus prolonging their lifespan and ensuring consistent operation over extended periods.

In terms of build quality, the Dual XPA amplifiers feature a solid construction with durable materials that promise longevity and reliability. Their aesthetic design allows for seamless integration into different settings, whether it be a home audio system or a professional stage setup.

Overall, the Dual XPA2500 and XPA4640 amplifiers represent a powerful duo in audio amplification, offering a range of features and technologies that cater to diverse listening preferences and environments. With their blend of power, flexibility, and durability, these amplifiers continue to gain recognition among audio enthusiasts and professionals seeking high-quality sound performance.