1. Introduction
This manual provides comprehensive instructions for the installation, setup, operation, and maintenance of your KICKER KXMA900.5 5-channel marine amplifier. Please read this manual thoroughly before attempting installation or operation to ensure proper function and safety. Retain this manual for future reference.
Figure 1: Top view of the KICKER KXMA900.5 Marine Amplifier.
2. Safety Information
Observe the following safety precautions to prevent injury or damage to the amplifier or vehicle:
- Always disconnect the vehicle's battery negative terminal before making any electrical connections.
- Ensure all wiring is properly routed and secured to prevent pinching or damage.
- Use appropriate gauge wiring as specified in this manual to avoid overheating and potential fire hazards.
- Install the amplifier in a location that is protected from direct exposure to water, excessive heat, and vibration.
- Do not operate the amplifier if it has been submerged in water or shows signs of moisture damage.
- Seek professional installation if you are unsure about any part of the process.
3. Package Contents
Verify that your package contains the following items:
- KICKER 48KXMA9005 Marine Amplifier
- Mounting Hardware
- Owner's Manual (this document)
- Remote Bass Control (if applicable to your model variant)
4. Features
The KICKER KXMA900.5 amplifier incorporates advanced features designed for marine environments:
- Conformal-Coated Circuit Boards to Repel Moisture
- 316L Stainless-Steel, No-Rust Hardware
- Small Footprint for Flexible Installation
- Built-In Variable Crossovers for Precise Speaker Performance Matching
- Designed to Add Extra Intensity to a Large System, or Power High-End Tower Speakers
5. Installation
5.1 Mounting
Choose a mounting location that provides adequate ventilation for the amplifier. Avoid mounting in enclosed spaces or directly exposed to sunlight. Ensure the mounting surface is solid and secure. Use the provided hardware to firmly attach the amplifier.
5.2 Wiring
Refer to the diagram below for proper wiring connections. Ensure all connections are tight and insulated to prevent short circuits.
Figure 2: Rear panel connections for power, ground, remote, input, and speaker outputs.
5.2.1 Power Connections
- +12V (Power): Connect directly to the positive terminal of the vehicle's battery using an appropriate gauge power cable and an inline fuse within 18 inches of the battery.
- GND (Ground): Connect to a clean, solid metal chassis point as close to the amplifier as possible. Ensure the connection point is free of paint or corrosion.
- REM (Remote Turn-On): Connect to the remote turn-on lead from your head unit or an ignition-switched 12V source.
5.2.2 Input Connections
Connect RCA cables from your head unit's pre-amp outputs to the amplifier's input terminals (AMP1, AMP2, SUB).
5.2.3 Speaker Connections
Connect your speakers to the designated speaker terminals (AMP1, AMP2, SUB). Observe correct polarity (+ to + and - to -) for optimal sound performance. The KXMA900.5 supports both stereo and bridged configurations for AMP1 and AMP2 channels, and a dedicated subwoofer channel.
6. Setup and Adjustments
The KXMA900.5 amplifier features various controls for fine-tuning your audio system.
Figure 3: Control panel showing gain, crossover, and EQ settings.
6.1 Gain Setting
The GAIN control matches the amplifier's input sensitivity to the output level of your head unit. To set the gain:
- Turn the amplifier gain to its minimum setting.
- Turn the head unit volume up to about 75% of its maximum level.
- Slowly increase the amplifier gain until you hear slight distortion, then back it off slightly.
6.2 Crossovers
The amplifier features variable high-pass (HP), low-pass (LP), and band-pass (BP) crossovers for AMP1 and AMP2, and a low-pass (LP) and sub-sonic filter for the SUB channel. Adjust these to direct appropriate frequencies to your speakers and subwoofer.
- HPF (High-Pass Filter): Allows frequencies above the set point to pass through. Typically used for full-range speakers.
- LPF (Low-Pass Filter): Allows frequencies below the set point to pass through. Typically used for subwoofers.
- Sub-Sonic Filter: Filters out extremely low frequencies that are inaudible and can damage subwoofers.
6.3 KICK EQ (Bass Boost)
The KICK EQ control allows you to increase the bass output at a specific frequency. Use this feature sparingly to avoid distortion and potential speaker damage.
7. Operating Instructions
Once properly installed and configured, the KXMA900.5 amplifier will automatically turn on and off with your head unit. Ensure your head unit's volume is at a reasonable level before starting playback. Adjust the head unit's balance and fader controls as desired. For optimal sound, avoid operating the system at maximum volume for extended periods, which can lead to distortion and component damage.
8. Troubleshooting
If your amplifier is not functioning correctly, consult the following table for common issues and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No power/No sound | Blown fuse, loose power/ground connection, no remote turn-on signal. | Check inline fuse, verify power/ground connections, check remote wire for 12V. |
| Distorted sound | Gain set too high, improper crossover settings, damaged speakers. | Reduce gain, adjust crossovers, inspect speakers for damage. |
| Amplifier goes into protection mode (red LED) | Overheating, short circuit in speaker wiring, low voltage. | Ensure proper ventilation, check speaker wiring for shorts, verify battery voltage. |
| No bass from subwoofer | Subwoofer channel gain too low, LPF set too low, subwoofer wiring issue. | Increase subwoofer gain, adjust LPF, check subwoofer connections. |
If the problem persists after troubleshooting, contact KICKER customer support or your authorized dealer.
9. Specifications
The following table outlines the technical specifications for the KICKER KXMA900.5 Marine Amplifier:
| Specification | Value |
|---|---|
| Model Number | 48KXMA9005 |
| Product Dimensions | 15 x 21 x 10 inches |
| Item Weight | 8.28 pounds |
| Manufacturer | Kicker |
| Channels | 5 (4-channel full-range + 1-channel subwoofer) |
| Amplifier Class | Class-D |
| Conformal Coating | Yes |
| Hardware | 316L Stainless-Steel |
10. Maintenance
Regular maintenance ensures the longevity and performance of your amplifier:
- Periodically inspect all wiring connections for corrosion or looseness.
- Clean the amplifier's exterior with a soft, damp cloth. Avoid using harsh chemicals or abrasives.
- Ensure the mounting area remains free of debris that could obstruct airflow and cause overheating.
11. Warranty and Support
Your KICKER KXMA900.5 Marine Amplifier is covered by a limited warranty. For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official KICKER website. For technical support, troubleshooting assistance, or service inquiries, please contact KICKER customer service or your authorized KICKER dealer.
KICKER Official Website: www.kicker.com
