kenwood kac m3004 manual pdf

The Kenwood KAC-M3004 is a compact 4-channel car amplifier designed for high-quality audio performance in vehicle sound systems. This Class D amplifier delivers 50W RMS x 4 channels at 4 ohms, featuring MOSFET power supply, variable high-pass/low-pass filters, bass boost, and speaker-level inputs. Below are key sections covering specifications, installation, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. Wiring Connections 4. Specifications 5. Controls and Settings 6. Operation Guide 7. Troubleshooting 8. Safety Precautions 9. Regulatory Information

Features at a Glance

Key components: Compact chassis design, MOSFET power supply, speaker/high-level inputs, variable electronic crossover.

Feature	Description
Power Output	50W RMS x 4 channels at 4 ohms
Class D Design	High efficiency with minimal heat generation
MOSFET Power Supply	Stable power delivery and reliability
Crossover Filters	Variable high-pass/low-pass (50-200Hz)
Bass Boost	0-12dB boost at 50Hz
Input Options	RCA line inputs and speaker-level inputs
Protection Circuitry	Thermal, overload, and short circuit protection
Compact Size	Easy installation in tight spaces

Installation

Choose proper mounting location and prepare wiring connections.

Select mounting location: Dry, well-ventilated area away from heat sources.
Mount amplifier: Use provided screws and brackets for secure installation.
Connect power: Run power cable from battery positive terminal with appropriate fuse.
Ground connection: Connect ground wire to clean, bare metal chassis point.
Connect remote turn-on: Connect to head unit's remote turn-on lead.
Connect audio inputs: Use RCA cables from head unit or speaker-level inputs.
Connect speakers: Ensure proper polarity and impedance matching.

WARNING! Disconnect battery negative terminal before installation to prevent electrical shorts.

Wiring Connections

Proper wiring ensures optimal performance and safety.

Connection	Specification
Power Wire	8-gauge minimum, fused within 18" of battery
Ground Wire	8-gauge, connected to clean chassis metal
Remote Turn-on	16-18 gauge wire from head unit
Speaker Wires	16-18 gauge, proper polarity maintained
RCA Cables	Shielded cables away from power wires

CAUTION! Route power and signal cables on opposite sides of vehicle to prevent noise.

Specifications

RMS Power: 50W x 4 channels at 4 ohms
Peak Power: 150W x 4 channels
Frequency Response: 10Hz - 50kHz (+1dB, -3dB)
Signal-to-Noise Ratio: >95dB
Input Sensitivity: 0.2V - 5V (RCA), 0.5V - 10V (high-level)
Crossover Range: 50-200Hz (high-pass/low-pass)
Bass Boost: 0-12dB at 50Hz
Operating Voltage: 14.4V DC (11-16V range)
Dimensions: 9-7/8" x 2-3/8" x 7-1/8"

Controls and Settings

Access controls via top panel controls and input section.

Input Section: RCA inputs (CH1-4), speaker-level inputs, input level switch.

Control Panel: Input level control, high-pass/low-pass filter switches, crossover frequency controls, bass boost control, phase switch.

Settings: Input level (adjust to match head unit output), crossover mode (HPF/LPF/Full), crossover frequency (50-200Hz), bass boost level (0-12dB), phase (Normal/Reverse).

Operation Guide

Proper setup for optimal audio performance.

Set input level: Adjust to match head unit volume without distortion.
Configure crossover: Select HPF for speakers, LPF for subwoofers.
Set crossover frequency: Match to speaker capabilities (typically 80-120Hz).
Adjust bass boost: Use sparingly to avoid distortion.
Check phase: Set to normal unless experiencing cancellation issues.

Tip: Start with conservative settings and adjust gradually while listening for distortion.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Power/ground connections	Check power wire fuse; verify ground connection; confirm remote turn-on voltage.
Protection mode	Short circuit/overheating	Check speaker wires for shorts; ensure proper ventilation; allow amplifier to cool.
Distorted sound	Input level too high	Reduce input level control; lower head unit volume; check speaker impedance.
Engine noise	Ground loop/poor routing	Improve ground connection; reroute RCA cables away from power wires.
One channel not working	Wiring/input issue	Check RCA cable; verify speaker connection; test with known good source.

Safety Precautions

Always follow safety guidelines during installation and operation.

Disconnect battery before beginning installation
Use appropriate fuse rating for power wire
Ensure proper ventilation around amplifier
Use correct wire gauge for all connections
Secure all wiring to prevent movement and shorts

WARNING! Never operate amplifier without proper fuse protection.

Regulatory Information

FCC Part 15: Class B digital device compliant. This device complies with part 15 of the FCC Rules. Copyright © Kenwood Corporation. All trademarks are property of their respective owners. For technical support and warranty information, visit www.kenwood.com or contact authorized Kenwood service centers.