kenwood xr900 5 manual

The Kenwood XR900-5 is a 5-channel car amplifier designed for high-performance audio systems, featuring MOSFET power supply, variable high-pass/low-pass filters, bass boost, speaker-level inputs, preamp outputs, and thermal/overload/short circuit protection. Rated at 4 x 50W + 1 x 150W RMS at 4 ohms. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Devices 7. Operation Modes 8. Protection Features 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: 5-channel amplifier, MOSFET power supply, crossover controls, bass boost, speaker-level inputs, protection circuitry.

Feature	Description
MOSFET power supply	For efficient power conversion and reliability
Variable high-pass filter	Adjustable from 50Hz to 250Hz for front/rear channels
Variable low-pass filter	Adjustable from 50Hz to 250Hz for subwoofer channel
Bass boost	0 to +12dB boost at 45Hz for subwoofer
Speaker-level inputs	For connection to factory head units
Preamp outputs	For daisy-chaining additional amplifiers
Protection circuitry	Thermal, overload, and short circuit protection
Power terminals	+12V, ground, remote turn-on
Input sensitivity	Adjustable from 0.2V to 5V
Channel configuration	4 channels + 1 subwoofer channel

Installation

Choose proper mounting location and prepare wiring.

Mount amplifier: Select dry, well-ventilated location; secure with provided hardware.
Connect power: Run +12V wire from battery (with fuse), ground to chassis, remote to head unit.
Connect speakers: Wire speakers to appropriate channel outputs.
Connect audio inputs: Use RCA cables or speaker-level inputs.

WARNING! Disconnect battery before installation. Ensure proper fuse rating. Avoid sharp edges when routing wires.

First-Time Setup

Power on amplifier; configure basic settings.

Set input sensitivity: Start with minimum setting; adjust while playing music.
Configure crossovers: Set high-pass for speakers, low-pass for subwoofer.
Adjust bass boost: Start with minimal boost; adjust to preference.
Balance channels: Use head unit fader/balance to match levels.

CAUTION! Set gains properly to avoid distortion and speaker damage.

Specifications

Channels: 5 (4 full-range + 1 subwoofer)
RMS Power: 4 x 50W + 1 x 150W @ 4 ohms
Max Power: 4 x 100W + 1 x 300W @ 2 ohms
Frequency Response: 10Hz - 50kHz
Signal-to-Noise: >95dB
THD: <0.08%
Crossover: Variable HPF/LPF 50-250Hz
Bass Boost: 0-12dB @ 45Hz
Input Sensitivity: 0.2V - 5V
Dimensions: Standard amplifier size

Controls and Settings

Access controls via front/rear panel controls.

Front Panel: Power indicator, protection indicator.

Rear Panel: Input sensitivity control, high-pass filter (ch 1-4), low-pass filter (ch 5), bass boost, input selection (RCA/speaker level), power/ground/remote terminals, speaker outputs, RCA inputs/outputs.

Crossover: Set HPF for speakers (50-250Hz), LPF for subwoofer (50-250Hz). Input Level: Match to head unit output. Bass Boost: Adjust subwoofer enhancement. Input Select: Choose RCA or speaker-level input.

Connecting Devices

RCA inputs: From head unit. Speaker-level inputs: From factory radio. Preamp outputs: To additional amplifiers.

Turn off vehicle before connecting.
Match RCA cables to appropriate inputs.
Connect speaker wires observing polarity.
Ensure secure power/ground connections.

Tip: Use quality cables and proper gauge wire for power connections.

Operation Modes

Supports various system configurations.

4-channel mode: Use channels 1-4 for front/rear speakers.
3-channel mode: Channels 1-2 for front, channel 5 for subwoofer.
Subwoofer mode: Channel 5 dedicated to subwoofer with LPF.
Bi-amp mode: Use channels 1-2 for woofer, 3-4 for tweeters with external crossover.
Full-range mode: All channels set to full-range reproduction.

WARNING! Do not bridge channels unless specified in manual. Match impedance requirements.

Protection Features

Thermal Protection: Automatically reduces output if overheating detected. Overload Protection: Limits current during overload conditions. Short Circuit Protection: Disables output if short circuit detected.

Care & Maintenance

Keep amplifier clean and dry. Ensure proper ventilation. Check connections periodically.

CAUTION! Do not block ventilation openings. Avoid moisture exposure. Disconnect power before cleaning.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits. CE certified for European markets. Copyright © Kenwood Corporation. For support, visit www.kenwood.com or contact authorized service centers.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Wiring/fuse	Check power, ground, remote connections; verify fuse.
Protection mode active	Overload/short circuit	Check speaker wiring for shorts; allow cooling if overheated.
No sound	Input/connections	Verify RCA/speaker level inputs; check head unit settings.
Distorted sound	Gain settings	Adjust input sensitivity; check source material quality.
Overheating	Ventilation/load	Ensure proper ventilation; check impedance load.

Reset: Disconnect power for 30 seconds to reset protection circuitry.

Service: Contact authorized Kenwood service centers; www.kenwood.com