Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your Lanzar HTG447 2,000-Watt 4-Channel Mosfet Amplifier. Please read this manual thoroughly before attempting to install or operate the amplifier to ensure proper function and safety.
Image: Lanzar HTG447 amplifier, showing its sleek black design with the "Lanzar Heritage" logo.
Safety Information
- Always disconnect the vehicle's battery negative terminal before starting any electrical work.
- Ensure all wiring is properly routed and secured to prevent damage or short circuits.
- Use appropriate gauge wiring for power and ground connections as specified in the installation section.
- Mount the amplifier in a location that allows for adequate ventilation and is protected from moisture and excessive heat.
- Do not operate the amplifier if it is damaged or malfunctioning. Refer to the troubleshooting section or contact support.
Product Features
- 4-Channel Mosfet Amplifier
- Maximum Output Power: 2000 Watts
- RMS Power Output: 4 x 250W @ 4 OHMS, 4 x 350W @ 2 OHMS
- Bridgeable at 4 Ohms: 2 x 1000W Max
- 2 Ohm Stereo Stable
- Bass Boost Circuit
- Low Pass Filter (LPF) Controls: 50Hz-250Hz
- High Pass Filter (HPF) Controls: 80KHz
- Electronic Crossover Network
- S/N Ratio: >90dB
- THD: <0.01%
- Gold RCA Inputs and Line Outs
- Soft Turn-on/Turn-off Circuitry
- Power and Protection LED Indicators
- Frequency Response: 10Hz-45KHz
Package Contents
Verify that all items are present in the package:
- Lanzar HTG447 2,000-Watt 4-Channel Mosfet Amplifier
- Mounting Screws
- Spare Fuses (20A x 2)
- User Manual (this document)
Image: The Lanzar HTG447 amplifier shown with its included accessories: mounting screws and spare fuses.
Setup and Installation
1. Mounting the Amplifier
Choose a mounting location that provides adequate air circulation for cooling and is protected from moisture. Ensure the amplifier is securely fastened to prevent movement during vehicle operation.
Image: Product dimensions of the Lanzar HTG447 amplifier, showing a length of 14.96 inches and a width of 8.81 inches.
- Dimensions: 14.96''(L) x 2.24''(H) x 8.81''(W)
- Ensure at least 2 inches of clearance around the amplifier for proper heat dissipation.
2. Wiring Connections
Refer to the diagrams below for proper wiring. Incorrect wiring can damage the amplifier or vehicle electrical system.
Image: Detailed views of the Lanzar HTG447 amplifier's front and rear panels, illustrating input and output connections, including RCA, gain controls, crossover settings, power input, fuse, and speaker outputs.
Power Connections:
- +12V (BATT): Connect directly to the positive terminal of the vehicle's battery using a suitable gauge power cable (e.g., 4-gauge). Install an in-line fuse holder within 18 inches of the battery.
- GND (Ground): Connect to a clean, unpainted metal surface of the vehicle chassis. Ensure a solid electrical connection. Use the same gauge wire as the +12V connection.
- REM (Remote): Connect to the remote turn-on lead from your head unit. This wire turns the amplifier on and off with the head unit.
Audio Input (RCA) Connections:
- Connect RCA cables from your head unit's pre-amp outputs to the amplifier's RCA inputs (1CH/2CH and 3CH/4CH).
- The amplifier also features Line Outs for Left and Right Channels, allowing connection to additional amplifiers.
Speaker Output Connections:
- Connect your speakers to the amplifier's speaker terminals. Observe correct polarity (+ to + and - to -).
- For 4-channel stereo operation, connect one speaker per channel.
- For bridged operation (2-channel), connect speakers across the designated bridged terminals (e.g., 1CH+ and 2CH- for one bridged channel). Refer to the diagram on the amplifier.
- The amplifier is 2 Ohm stereo stable. Ensure speaker impedance matches the amplifier's capabilities.
Operating Instructions
Adjusting Controls
The Lanzar HTG447 features several adjustable controls to fine-tune your audio system. These controls are located on the front panel of the amplifier.
- GAIN Control: Adjusts the input sensitivity of the amplifier to match the output level of your head unit. Start with the gain at minimum and slowly increase until desired volume is achieved without distortion.
- X-OVER (Crossover) Control:
- FULL: Full range audio output.
- HPF (High Pass Filter): Allows frequencies above the set point to pass through. Useful for full-range speakers to prevent low bass distortion. Adjustable up to 80KHz.
- LPF (Low Pass Filter): Allows frequencies below the set point to pass through. Essential for subwoofers. Adjustable from 50Hz-250Hz.
- BASS BOOST: Provides an adjustable bass enhancement at a specific frequency. Use sparingly to avoid distortion and potential speaker damage.
Note: Always make small adjustments and listen carefully to the audio output to prevent damage to speakers or the amplifier.
Maintenance
- Keep the amplifier clean and free from dust and debris. Use a soft, dry cloth for cleaning.
- Ensure ventilation openings are not obstructed.
- Periodically check all wiring connections for tightness and corrosion.
- If a fuse blows, replace it only with a fuse of the same type and rating (20A). Using an incorrect fuse can cause serious damage.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No Power (Power LED Off) | Blown fuse, poor power/ground connection, no remote turn-on signal. | Check fuses (amplifier and in-line). Verify +12V, GND, and REM connections. Ensure head unit is on. |
| Protection LED On | Overheating, speaker short circuit, impedance too low. | Check for proper ventilation. Inspect speaker wiring for shorts. Verify speaker impedance is within limits (2 Ohm stable). |
| No Audio Output | RCA cables disconnected, gain too low, speaker wires disconnected. | Check RCA connections from head unit. Adjust gain control. Verify speaker wiring. |
| Distorted Sound | Gain set too high, improper crossover settings, poor quality audio source. | Reduce gain. Adjust LPF/HPF settings. Ensure audio source is clean. |
Specifications
| Feature | Specification |
|---|---|
| Model | HTG447 |
| Number of Channels | 4 |
| Maximum Output Power | 2000 Watts |
| RMS Power (4 Ohms) | 4 x 250W |
| RMS Power (2 Ohms) | 4 x 350W |
| Bridged Power (4 Ohms) | 2 x 1000W Max |
| Minimum Impedance | 2 Ohm Stereo Stable |
| Signal-to-Noise Ratio (S/N) | >90dB |
| Total Harmonic Distortion (THD) | <0.01% |
| Frequency Response | 10Hz-45KHz |
| Low Pass Filter (LPF) | 50Hz-250Hz |
| High Pass Filter (HPF) | 80KHz |
| Channel Separation | >65dB |
| Fuse Rating | 20A x 2 |
| Dimensions (L x H x W) | 14.96'' x 2.24'' x 8.81'' |
| Item Weight | 8.2 Pounds |
| Voltage | 3 Volts (Input Signal Voltage) |
Warranty and Support
Warranty Information
The Lanzar HTG447 amplifier comes with a 1-year limited warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use. It does not cover damage caused by improper installation, accident, misuse, abuse, neglect, unauthorized repair, or modification.
Please retain your proof of purchase for warranty claims.
Customer Support
For technical assistance, troubleshooting not covered in this manual, or warranty service, please contact Lanzar customer support. Refer to the official Lanzar website for the most current contact information.
Website: www.lanzar.com
