Dual Compact Series User Manual (English)

Questions and Answers:

C
Charles PriceAug 13, 2025
What to do if Dual Amplifier LED illuminates red (protect mode)?
- C
  chodgesAug 13, 2025
  If the LED on your Dual Amplifier illuminates red, indicating protect mode, it could be due to several reasons. First, check if any speaker wires are touching each other or the chassis ground; if so, insulate all bare speaker wires. Second, your speakers might be defective or internally shorted, so inspect and replace them if necessary. Finally, the speaker load might be less than 2 ohms stereo or less than 4 ohms bridged. In this case, you should adjust the speaker load, as the amplifier will not operate at less than 4 ohms when bridged.
S
Susan SingletonAug 17, 2025
Why Dual Amplifier unit will not turn on (no power LED indicator)?
- J
  Jennifer SmithAug 17, 2025
  If your Dual Amplifier isn't turning on and the power LED isn't lit, there are a few potential causes. First, the 6 WIRE might not be connected, or the voltage might be incorrect. Check the connections for proper voltage. Second, the WIRE might not be connected, so check the connection to ground. Finally, the fuse might have blown, so replace the fuses.
D
Dominique SmithAug 20, 2025
What to do if Dual Amplifier unit blows fuse(s)?
- N
  Nicholas JamesAug 20, 2025
  If your Dual Amplifier keeps blowing fuses, here's what to check: Ensure you are using fuses with the correct rating. An incorrect fuse rating can cause this issue. Also, inspect the wiring for any pinched wires that may be touching the chassis ground. Lastly, defective or damaged speakers can also cause fuses to blow, so check and replace the speakers if needed.
H
hbrownAug 25, 2025
How to fix engine noise in Dual Amplifier?
- A
  Amanda AlvarezAug 25, 2025
  If you're experiencing engine noise with your Dual Amplifier, it's likely due to a bad ground connection. Make sure the amplifier is grounded to clean, bare metal. Another potential cause is a signal ground loop or radio frequency interference. Try re-routing the signal cables away from existing high-current wiring.
E
epattersonAug 28, 2025
What to do if Dual Amplifier has power but no sound?
- C
  Colton CochranAug 28, 2025
  If your Dual Amplifier has power (LED is green) but no sound, consider these possibilities: 1. The speaker wires might not be connected. Check the connections at the speakers. 2. The volume might be turned all the way down. Increase the volume level at the head unit. 3. One or more speaker wires could be touching each other or the chassis ground. Insulate all bare speaker wires from each other and the chassis ground. 4. The speakers might be defective or damaged. Check and replace the speakers. 5. The input signal might not be connected. Check the high or low-level inputs for proper connection.
E
ellisamandaAug 31, 2025
Why is audio output distorted on Dual Amplifier?
- S
  Scott WilliamsAug 31, 2025
  Distorted audio output from your Dual Amplifier can be caused by an incorrect input signal type or an input level that is too high. Check the connections and reduce and adjust the input level.
W
wheelermaureenSep 4, 2025
Why is the audio output low on Dual Amplifier?
- Z
  zmillerSep 4, 2025
  Low audio output from your Dual Amplifier can be caused by an incorrect input signal type or an input level that is too low. You should check the connections and increase and adjust the input level.
K
Kelsey PearsonSep 8, 2025
Why Dual Amplifier has weak bass?
- A
  Amanda PerrySep 8, 2025
  If your Dual Amplifier is producing weak bass, the speakers are possibly wired out of phase. Check and observe the correct polarity.

Dual Compact Series Specifications

General

Brand	Dual
Model	Compact Series
Category	Amplifier
Language	English

Summary

Dual COMPACT SERIES Installation Manual

Preparation for Installation

Read manual, professional installation recommended. Disconnect battery, avoid hazards.

Connection Descriptions and Guidelines

Details power, ground, remote, speaker, and input signal connections. Advise on noise reduction.

Audio Inputs and Control Features

Overview of amplifier controls: Gain, Crossover Mode, Crossover Frequency, Bass Boost, LED Indicators.

Power and Speaker Connection Diagram

Diagram illustrating speaker, +12VDC battery, ground connections, and fuse placement.

Typical Wire Routing Guide

Guide for routing power, ground, REM, and signal wires. Fuse placement and wire gauge advice.

Amplifier Input and Output Connections

Explains speaker connections (impedance) and input signal types (RCA, High-Level).

Configuration and Setup Options

Details input level, crossover, bass boost, subsonic filter settings, and LED indicators.

Troubleshooting Common Issues

Troubleshooting guide listing problems, causes, and actions for unit issues, noise, and output problems.

Product Specifications

Technical specifications: power output (RMS/Peak), signal-to-noise ratio, frequency response, dimensions.

One-Year Limited Warranty Information

Warranty terms, covered/excluded items, and service procedures. Contact information provided.

Dual Compact Series User Manual

Table of Contents