1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your Precision Power i1000.4 Class D Full Range 4-Channel Amplifier. Please read this manual thoroughly before attempting installation or operation to ensure proper use and to prevent damage to the unit or your vehicle's audio system.
The Precision Power i1000.4 is a high-performance Class D amplifier designed to deliver powerful and clear audio output for your car audio system. Its compact design and efficient technology make it suitable for various installations.
2. Safety Information
Always observe the following safety precautions during installation and operation:
- Disconnect the vehicle's negative battery terminal before starting any electrical work.
- Ensure all wiring is properly insulated to prevent short circuits.
- Mount the amplifier securely to prevent it from becoming a projectile in the event of a sudden stop or accident.
- Avoid installing the amplifier in areas exposed to direct sunlight, excessive heat, moisture, or dust.
- Use appropriate gauge wiring for power, ground, and speaker connections as specified in this manual.
- Do not open the amplifier casing. There are no user-serviceable parts inside. Refer all servicing to qualified personnel.
- Prolonged exposure to high volume levels can cause hearing damage. Adjust volume to a safe level.
3. Package Contents
Verify that all items are present in the package:
- Precision Power i1000.4 4-Channel Amplifier
- Mounting Hardware (screws)
- User Manual (this document)
4. Features
The Precision Power i1000.4 amplifier incorporates several key features for optimal performance:
- iON Series 4-Channel Class D Car Amplifier
- Pulse Width Modulated MOSFET power supply
- LED power (green) and protect (red) indicators
- SMT (Surface Mount Technology) for easy installation
- Variable 12dB High Pass, Low Pass, & Subsonic Crossovers (for input channels)
5. Setup and Installation
Proper installation is crucial for the performance and longevity of your amplifier. If you are unsure about any part of the installation process, consult a professional car audio installer.
5.1 Mounting Location
Choose a mounting location that is dry, well-ventilated, and protected from direct heat and moisture. Ensure there is sufficient space around the amplifier for air circulation. Common locations include under seats, in the trunk, or behind panels.
5.2 Wiring Connections
Refer to the diagrams below for proper wiring. Use high-quality wiring components.
5.2.1 Power and Ground Connections
- 12V DC (Power): Connect a fused power cable (minimum 8 AWG, preferably 4 AWG for optimal performance) directly from the vehicle's positive battery terminal to the amplifier's '12V DC' terminal. Install a fuse holder within 18 inches of the battery.
- GND (Ground): Connect a ground cable (same gauge as power cable) from the amplifier's 'GND' terminal to a clean, unpainted metal surface on the vehicle's chassis. Ensure a solid, low-resistance connection.
- REM (Remote Turn-On): Connect a remote turn-on wire (18 AWG) from your head unit's remote output to the amplifier's 'REM' terminal. This signal turns the amplifier on and off with your head unit.
5.2.2 Input Connections
- RCA Inputs: Connect RCA cables from your head unit's pre-amp outputs (Front and Rear) to the corresponding 'IN PUT' RCA jacks on the amplifier.
- High-Level Inputs: If your head unit does not have RCA outputs, use the 'HI-INPUT' terminals. Connect the speaker wires from your head unit directly to these terminals. Observe correct polarity (+/-).
5.2.3 Speaker Connections
Connect your speakers to the amplifier's speaker output terminals. The i1000.4 is a 4-channel amplifier, supporting four speakers or two speakers in bridged mode. Ensure correct polarity for all speaker connections.
- 4-Channel Mode: Connect each speaker to its dedicated channel output (L CH+, L CH-, R CH+, R CH- for Front and Rear).
- Bridged Mode (2-Channel): For higher power output to two speakers (e.g., subwoofers), bridge two channels. Connect the positive (+) terminal of the speaker to the R CH+ terminal of one channel pair and the negative (-) terminal of the speaker to the L CH- terminal of the same channel pair. Refer to the amplifier's output panel markings for specific bridged connections.
6. Operating Instructions
After installation, adjust the amplifier settings for optimal audio performance.
6.1 Gain Adjustment
The 'GAIN' control matches the amplifier's input sensitivity to the output level of your head unit. It is not a volume control.
- Turn the amplifier gain controls to their minimum (counter-clockwise) position.
- Set your head unit's volume to about 75% of its maximum level.
- Slowly increase the amplifier's gain control until you hear slight distortion, then back off slightly until the sound is clear.
- Repeat for both Front and Rear channels if using separate gain controls.
6.2 Crossover Settings
The i1000.4 features variable high-pass (HPF) and low-pass (LPF) filters, as well as a FLAT setting, for each channel pair (Front and Rear).
- HPF (High Pass Filter): Allows frequencies above the set point to pass through. Useful for full-range speakers to prevent low bass distortion.
- LPF (Low Pass Filter): Allows frequencies below the set point to pass through. Useful for subwoofers.
- FLAT: Disables the crossover, allowing all frequencies to pass through.
Adjust the crossover frequency (35Hz-250Hz) according to your speaker type and desired sound. For example, if using full-range speakers, set the HPF to around 80-100Hz to protect them from damaging low frequencies.
7. Maintenance
The Precision Power i1000.4 amplifier requires minimal maintenance.
- Keep the amplifier clean and free of dust. Use a soft, dry cloth for cleaning.
- Ensure proper ventilation around the amplifier to prevent overheating.
- Periodically check all wiring connections for tightness and corrosion.
8. Troubleshooting
If you experience issues with your amplifier, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No Power (Power LED off) | Blown fuse, poor power/ground connection, no remote signal. | Check inline fuse, verify 12V DC and ground connections, ensure remote wire has 12V. |
| Protection LED On | Short circuit in speaker wiring, impedance too low, overheating, DC offset. | Check speaker wiring for shorts, verify speaker impedance, ensure proper ventilation, disconnect speakers and test. |
| No Sound Output | No input signal, incorrect gain setting, speaker wires disconnected. | Check RCA/high-level input connections, adjust gain, verify speaker connections. |
| Distorted Sound | Gain set too high, incorrect crossover settings, poor input signal. | Reduce gain, adjust crossover filters, check head unit output. |
| Engine Noise (Whine) | Poor ground connection, RCA cables routed near power cables, ground loop. | Improve ground connection, reroute RCA cables away from power, use a ground loop isolator. |
If the problem persists after attempting these solutions, contact Precision Power customer support or a qualified service technician.
9. Specifications
Technical specifications for the Precision Power i1000.4 Class D 4-Channel Amplifier:
- Model: i1000.4
- Type: Class D Full Range 4-Channel Amplifier
- RMS Power Rating:
- 4 ohms: 140 watts x 4 channels
- 2 ohms: 250 watts x 4 channels
- Bridged, 4 ohms: 500 watts x 2 channels
- Maximum Supply Voltage: 16 Volts (DC)
- Minimum Supply Voltage: 14 Volts
- Item Dimensions (L x W x H): 10.2 x 4.78 x 1.5 inches
- Item Weight: 5 pounds
- Mounting Type: Surface Mount
- UPC: 709483050051
10. Warranty and Support
Precision Power products are designed and manufactured to the highest quality standards. For warranty information, please refer to the warranty card included with your product or visit the official Precision Power website. For technical support or service inquiries, please contact Precision Power customer service through their official channels.
Contact Information: Please refer to the Precision Power official website for the most current contact details.