Kicker 48KMA3604 KMA Series 4-Channel 90W RMS x 4 at 2 Ohms, Class A/B Weather-Resistant Marine Amplifier
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What's Inside?
- • KMA Series 4-Channel Class A/B Weather-Resistant Marine Amplifier
- • (4) 3/4" Screws
- • Power Chart
- • Kicker Power Certification
- • Quickstart guide
- • Owner's Manual
Why Choose Kicker 48KMA3604 Marine Amplifier?
Marine-Grade Power and Built to Perform
Engineered for life on the water, the Kicker 48KMA360.4 delivers efficient, high-quality sound with its Class A/B design and 500 watts of dynamic power. This versatile four-channel amp offers flexible setup options—including bridging capability—while its conformal-coated circuit board shields against moisture, salt, and corrosion. Perfect for boats and powersports, it's the reliable power boost your marine audio system needs.
Custom-Tuned for Clean and Powerful Sound
Dial in your perfect sound with the Kicker 48KMA360.4’s precision tuning features, including a variable 12dB crossover for optimal frequency control and KickEQ™ variable 6dB bass boost for enhanced low-end impact. Whether you're cruising or anchored, enjoy rich, detailed audio that’s fine-tuned to your exact preferences.
Built to REAL MARINE™ Standards
Designed for true marine performance, the Kicker 48KMA360.4 meets REAL MARINE™ standards with ABYC/NMMA-compliant power connections that ensure safe, reliable operation on the water. Outfitted with durable 316L stainless-steel hardware, this amp is built to withstand the harshest marine conditions for years of dependable, high-quality sound.
Frequently Asked Questions (FAQ)
- • Why won't the amplifier power on after installation?
A blown fuse, loose power wire, poor ground, or missing remote turn-on signal is the most common cause. Check all wiring connections and verify the battery voltage before troubleshooting the amplifier.
- • Can I power four marine speakers with this amplifier?
Yes. It is designed to power multiple compatible marine speakers as long as the total speaker load stays within the recommended impedance range.
- • Is it built for saltwater environments?
Yes. Its marine-grade construction is designed to resist moisture, corrosion, UV exposure, and vibration when properly installed.
- • Why is there power but no sound from the speakers?
This is often caused by loose RCA cables, disconnected speaker wiring, or incorrect source unit settings. Verify all signal and speaker connections before assuming the amplifier is defective.
- • Why does the amplifier become hot during long days on the water?
Some heat is normal during extended high-output operation. Make sure the amplifier has sufficient airflow and is not installed inside a sealed compartment.
- • Can I bridge the channels to power a subwoofer?
Yes, if the amplifier supports bridged operation and the connected subwoofer meets the recommended impedance requirements. Follow the manufacturer's wiring diagram for proper channel bridging.
- • Why do I hear engine or alternator noise through my speakers?
Electrical interference is usually caused by poor grounding or signal cables routed too close to power wires. Improving the ground connection and separating the cable paths typically resolves the issue.
- • Should I use marine-grade wiring during installation?
Yes. Marine-grade power and speaker wire provide better resistance to corrosion, moisture, and saltwater exposure than standard automotive wiring.
- • Can I expand my marine audio system in the future?
Yes. You can add compatible speakers, subwoofers, or another amplifier if your boat's electrical system has enough capacity for the additional equipment.
- Maximum Power : 500 Watts
- Low Frequency Response : 50-200 Hz
- High Frequency Response : 50-200 Hz
- Number of Channels : 4
- Frequency Response : 10-20000 Hz
- Built In Crossovers : Yes
- RMS Power Output : 4x90 Watts
- Channel Separation : Yes
- Amplifier Class : A/B
- Fuse Rating : 60 A
Features:
- Class A/B Design: Delivers efficient, high-quality audio performance
- Powerful Output: 500 Watts of dynamic power
- Flexible Setup: Four-channel amplifier with bridging capability
- Marine-Ready Protection: Conformal-coated circuit board resists moisture and corrosion
- Precision Tuning: Variable 12dB crossover for optimal sound control
- Bass Enhancement: KickEQ™ variable 6dB bass boost for deeper low-end
- REAL MARINE™ Standards: ABYC/NMMA-compliant power connections for safety and reliability
- Durable Hardware: Includes 316L stainless-steel components for long-lasting marine use
Specifications:
- RMS Power Output: 65 x 4 Watts
- Frequency Response at Rated RMS Power: 10Hz - 20,000Hz
- Signal to Noise Ratio: 75 dB
- Power at 2 Ohms: 90 x 4 Watts
- Bridged Power: 180 x 2 Watts
- Minimum Impedance Bridged: 4 Ohms
- Minimum Impedance Unbridged: 2 Ohms
- Amplifier Class: AB
- Low-Pass Crossover Frequency: 50 - 200Hz
- Low-Pass Slope: 12dB/octave
- High-Pass Crossover Frequency: 50 - 200Hz
- High-Pass Slope: 12dB/octave
- Bass Boost: 0 - 6dB
- Bass Boost Frequency: 40Hz
- Fan Cooled: No
- Fuse Rating: 60
- Speaker Level Inputs: Yes
- Preamp Outputs: No
- Height: 2.25"
- Width: 12.5"
- Depth: 6.625"
- UPC: 713034020370
- Weight: 5.2
- Authorized Internet Dealer
Warranty: 2 Year(s) Warranty.
This item is accompanied by a manufacturer's warranty. If it is found to be defective, it may be returned to OnlineCarstereo.com for replacement within 2 Year(s) from the original date of purchase with proper return authorization.
