Manuals+

PHOENIX GOLD QX1802

Phoenix Gold QX1802 2-Channel Amplifier User Manual

Model: QX1802

1. Introduction

This manual provides detailed instructions for the installation, operation, and maintenance of your Phoenix Gold QX1802 2-Channel Amplifier. Please read this manual thoroughly before attempting to install or operate the amplifier to ensure proper function and safety. Retain this manual for future reference.

2. Safety Information

Always observe the following safety precautions to prevent injury or damage to the amplifier and connected components:

  • Professional Installation Recommended: Installation should ideally be performed by a qualified professional to ensure correct wiring and optimal performance.
  • Power Disconnection: Always disconnect the vehicle's battery negative terminal before making any power connections to prevent electrical shorts.
  • Proper Ventilation: Ensure the amplifier is mounted in a location with adequate airflow to prevent overheating. Do not block ventilation openings.
  • Correct Wiring: Use appropriate gauge wiring for power, ground, and speaker connections as specified in the installation section. Incorrect wiring can lead to fire or damage.
  • Fuse Protection: Always use an external fuse on the main power wire as close to the battery as possible.
  • Avoid Moisture: Do not expose the amplifier to moisture or water.
  • Secure Mounting: Mount the amplifier securely to prevent it from becoming a projectile in the event of a sudden stop or collision.

3. Product Overview

The Phoenix Gold QX1802 is a high-performance 2-channel amplifier designed for automotive audio systems. It features a robust design and flexible controls to deliver clear and powerful sound.

Phoenix Gold QX1802 2-Channel Amplifier

Figure 3.1: Top view of the Phoenix Gold QX1802 2-Channel Amplifier. The amplifier features a black finish with heat sink fins and the Phoenix Gold logo.

Key Features:

  • 2-Channel Amplifier
  • Blue illuminated design
  • 2x 50 Watts RMS at 4 Ohm Stereo
  • 1x 180 Watts RMS at 4 Ohm Mono (bridged)
  • 2 Ohm Stereo stable
  • Variable 12dB Highpass/Lowpass Crossover (40Hz - 800Hz)
  • Auxiliary (Aux) Exit
  • Low Pass Level Control
  • Twin "T" Bass EQ
  • RMD Jack
  • IASCA P. Rating: 37.5W / RMS x 2 at 12.5V

4. Setup and Installation

Proper installation is crucial for the performance and longevity of your amplifier. Follow these steps carefully:

4.1. Mounting Location

  • Choose a dry, well-ventilated location away from direct sunlight and heat sources.
  • Ensure sufficient space around the amplifier for airflow.
  • Mount the amplifier securely to a solid surface using appropriate hardware.

4.2. Wiring Connections

Before making any connections, disconnect the vehicle's negative battery terminal.

  1. Power (B+): Connect a heavy-gauge power wire (e.g., 8 AWG or larger) from the amplifier's B+ terminal directly to the positive terminal of the vehicle's battery. Install an in-line fuse holder with an appropriate fuse (not supplied) within 18 inches (45 cm) of the battery.
  2. Ground (GND): Connect a heavy-gauge ground wire (same gauge as power wire) from the amplifier's GND terminal to a clean, unpainted metal surface on the vehicle's chassis. Ensure a good electrical connection.
  3. Remote Turn-On (REM): Connect a remote turn-on wire (e.g., 18 AWG) from the amplifier's REM terminal to the remote output of your head unit. This wire turns the amplifier on and off with your stereo.
  4. RCA Inputs: Connect RCA cables from your head unit's pre-amp outputs to the amplifier's RCA input jacks.
  5. Speaker Outputs: Connect your speakers to the amplifier's speaker output terminals. Observe correct polarity (+ to + and - to -). For stereo operation, connect one speaker per channel. For mono (bridged) operation, refer to the amplifier's specific bridging instructions, typically using the positive terminal of one channel and the negative terminal of the other.

5. Operating the Amplifier

Once installed, configure the amplifier settings for optimal sound performance.

5.1. Gain Adjustment

The gain control matches the amplifier's input sensitivity to the output voltage of your head unit. Start with the gain set to minimum. Play a familiar piece of music at about 75% of your head unit's maximum volume. Slowly increase the amplifier's gain until you hear distortion, then back off slightly. This ensures maximum clean output.

5.2. Crossover Settings

The QX1802 features variable 12dB Highpass/Lowpass crossovers (40Hz - 800Hz).

  • Highpass Filter (HPF): Used for full-range speakers or tweeters to block low frequencies that can cause distortion. Set the frequency based on your speaker's capabilities.
  • Lowpass Filter (LPF): Used for subwoofers to block high frequencies, allowing only bass to pass through. Set the frequency based on your subwoofer's capabilities, typically between 60Hz and 100Hz.

5.3. Bass EQ

The Twin "T" Bass EQ allows for boosting bass frequencies. Use this feature sparingly and adjust carefully to avoid distortion or damage to speakers.

6. Maintenance

The Phoenix Gold QX1802 amplifier requires minimal maintenance. Follow these guidelines to ensure its longevity:

  • Cleaning: Use a soft, dry cloth to wipe down the amplifier's exterior. Do not use harsh chemicals or abrasive cleaners.
  • Ventilation: Periodically check that the ventilation fins are free from dust and debris to ensure proper heat dissipation.
  • Connections: Occasionally inspect all wiring connections to ensure they are secure and free from corrosion.

7. Troubleshooting

If you experience issues with your amplifier, consult the following table before contacting technical support:

Problem Possible Cause Solution
No Power / Amplifier Not Turning On
  • Blown fuse
  • Poor ground connection
  • No remote turn-on signal
  • Power wire disconnected
  • Check and replace fuse (if blown, investigate cause)
  • Ensure ground wire is securely connected to clean metal
  • Verify remote wire connection to head unit and head unit's remote output
  • Check power wire connection at battery and amplifier
No Sound Output
  • RCA cables disconnected or faulty
  • Speaker wires disconnected or shorted
  • Gain set too low
  • Head unit volume too low or muted
  • Check RCA connections and test cables
  • Verify speaker wire connections and check for shorts
  • Adjust gain setting (refer to Operating section)
  • Increase head unit volume and check mute function
Distorted Sound
  • Gain set too high
  • Improper crossover settings
  • Speaker impedance mismatch
  • Poor ground connection
  • Reduce gain setting
  • Adjust crossover frequencies
  • Ensure speakers meet amplifier's impedance requirements (2 Ohm stable stereo, 4 Ohm mono)
  • Verify ground connection
Amplifier Overheating
  • Insufficient ventilation
  • Speaker impedance too low
  • Playing at high volume for extended periods
  • Relocate amplifier to a better ventilated area
  • Check speaker impedance
  • Reduce volume or allow amplifier to cool down

8. Specifications

Technical specifications for the Phoenix Gold QX1802 2-Channel Amplifier:

Feature Specification
Model Number QX1802
Channels 2
RMS Power (4 Ohm Stereo) 2 x 50 Watts
RMS Power (4 Ohm Mono) 1 x 180 Watts
Minimum Impedance (Stereo) 2 Ohm Stable
Crossover Type Variable 12dB Highpass/Lowpass
Crossover Frequency Range 40Hz - 800Hz
Bass EQ Twin "T" Bass EQ
Voltage 12.5 Volts (Operating)
Color Black
Dimensions (L x W x H) 24.1 x 24.1 x 5.1 cm (9.5 x 9.5 x 2 inches)
IASCA P. Rating 37.5W / RMS x 2 (at 12.5V)
UPC 083713052771

9. Warranty and Support

For information regarding warranty coverage and technical support for your Phoenix Gold QX1802 amplifier, please refer to the warranty card included with your product or visit the official Phoenix Gold website. Keep your proof of purchase for warranty claims.

For further assistance, contact Phoenix Gold customer service through their official channels.