Stage 2 Audio Package - RA210/M3-650x/AP300

Stage 2 Audio Package: Fusion RA210 + JL Audio M3 Speakers + AP300/4 Amplifier

This package moves past a stock stereo-and-speakers setup by pairing the Fusion® MS-RA210 head unit with four JL Audio® M3-650X-S-Gw 6.5" coaxial speakers, run through a dedicated JL Audio AP300/4 amplifier instead of relying on the head unit's built-in amp. We've included the correct-gauge power connection kit and RCA cable to wire it properly, plus a hide-away AM/FM antenna. A genuinely amplified system without the step up to flagship M6 speakers.

Why This Combo Works

The M3 Series is JL Audio's entry point into real marine-duty coaxials — long-excursion woofer design and a silk dome tweeter, built specifically for saltwater exposure rather than adapted from car audio. While the M3-650X can run on as little as 20W per channel, it's rated for 75–100W per channel at its best, which is exactly the range the AP300/4 operates in: a compact, IP67-rated 4-channel Class-D amplifier delivering 50W x 4 into 4 ohms. Running these speakers off a dedicated amp instead of the head unit's internal amp gets you meaningfully more headroom and cleaner output at volume. Pair it with the RA210's built-in DSP and JL Audio's Easy Tune feature streamlines the whole setup process. The premium 6 AWG power kit and marine-grade RCA cable round it out so the amp is wired correctly from the start, and the hide-away antenna covers AM/FM reception without a separate order.

1. Fusion® MS-RA210 Stereo (010-02250-00)

A compact marine head unit built around Fusion's DSP platform, with a 2.7" optically bonded full-color LCD set into a black face. Its DSP and Easy Tune compatibility make it a strong match for a dedicated amplifier setup like this one.

• Sources: AM/FM, Bluetooth, USB, Aux-in, SiriusXM-ready, DAB+
• DSP: Built-in Digital Signal Processing with feed-forward limiting
• Zones: Multi-Zone™ — two independently controlled audio zones
• Connectivity: Fusion-Link™ app control, NMEA 2000® integration, Easy Tune compatible with the AP300/4
• Water resistance: IPX6 & IPX7-rated front panel (properly mounted)
• In the box: Mounting gasket, self-tapping screws, screw covers, power/speaker harness, Aux-in/line-out/sub-out harness, 6 ft NMEA 2000 drop cable

2. JL Audio® M3-650X-S-Gw 6.5" Coaxial Speakers — Qty 4 (010-03063-00)

Purpose-engineered for real marine duty at a more affordable price point than JL Audio's maximum-performance M6 line, finished with gloss white sport grilles.

• Configuration: 2-way coaxial, 6.5" long-excursion woofer + 0.75" silk dome tweeter
• Woofer: Mica-filled IMPP cone, rubber surround
• Power handling: 60W RMS / 225W peak per speaker
• Impedance: 4 ohms
• Sensitivity: 89.5 dB @ 1W
• Frequency response: 55 Hz – 25 kHz
• Recommended power: 20W minimum, 75–100W per channel ideal — matched well to the AP300/4
• Mounting: Wide flange, 6-hole pattern; ~5" cutout, ~2.875" top-mount depth
• Air space: Free-air rated — needs at least 2 cu. ft. (57 L) of enclosed air volume behind each speaker
• Quantity in this package: 4 speakers (2 pairs)

3. JL Audio® AP300/4 Compact Amplifier w/ Easy Tune (010-03429-00)

A tough, ultracompact 4-channel Class-D amplifier built to run every speaker in this package with real headroom, in a footprint that fits under a console without a fight.

• Channels: 4
• Power @ 4 ohm: 50W x 4, or 150W x 2 bridged
• Power @ 2 ohm: 75W x 4
• Amplifier class: Class-D
• Frequency response: 20 Hz – 20 kHz
• Signal processing: User-selectable high-pass/low-pass filters, channel 1&2 and 3&4 independently switchable
• Control: Built-in LCD for manual control; Easy Tune feature via Fusion® Audio app when paired with a DSP-equipped Fusion stereo
• Rating: IP67 (excluding cables), SAE J1171 ignition protected
• Operating voltage: 9–16 VDC
• Fuse rating: 35A (AFS, AGU, or MaxiFuse™ recommended)
• Dimensions: 10.43" W x 4.9" D x 1.86" H
• In the box: Amplifier, four mounting screws, documentation

4. JL Audio® Premium 6 AWG Power Connection Kit — XMD-PCS50A-1-L10 (010-13417-00)

True AWG-spec, tinned pure OFC copper wiring sized for amplifier installs within 10 ft of the battery — ideal for most center consoles, pontoons, runabouts, and towboats.

• Power wire: Red 6 AWG tinned, 2 ft (dual power rings) + 8 ft (single power ring)
• Ground wire: Yellow 6 AWG tinned, 10 ft
• Remote turn-on wire: Blue 16 AWG, 18 ft
• Circuit breaker: 50A marine circuit breaker (XMD-MCB-50), manual reset, no fuses to replace
• Rating: IP67, withstands full immersion to 1 meter; SAE J1171 ignition protected
• Connection points: Stainless steel, corrosion-resistant

5. JL Audio® 4-Channel 6' Marine Audio RCA Cable — XMD-WHTAIC4-6 (010-13473-00)

A 4-channel marine-grade RCA interconnect running the RA210's outputs to the AP300/4's inputs — the correct channel count for a single run, no splitters required.

• Channels: 4
• Length: 6 ft
• Build: Marine-grade construction for saltwater environments

6. Hide-Away AM/FM Antenna

A low-profile, hide-away AM/FM antenna built to withstand real saltwater exposure and wired to plug straight into the RA210's standard antenna input.

What's Included

• 1x Fusion MS-RA210 Stereo (010-02250-00)
• 4x JL Audio M3-650X-S-Gw 6.5" Coaxial Speakers (010-03063-00) — 2 pairs
• 1x JL Audio AP300/4 Compact 4-Channel Amplifier (010-03429-00)
• 1x JL Audio Premium 6 AWG Power Connection Kit — XMD-PCS50A-1-L10 (010-13417-00)
• 1x JL Audio 4-Channel 6' Marine Audio RCA Cable — XMD-WHTAIC4-6 (010-13473-00)
• 1x Hide-Away AM/FM Antenna

Note: Speaker wire and mounting fasteners for non-standard cutouts are not included. Each speaker requires a minimum of 2 cu. ft. of enclosed air space for proper low-frequency performance. The included power kit is sized for amplifier locations within 10 ft of the battery — if your install run is longer, a longer-gauge kit (e.g. XMD-PCS50A-1-L20) is recommended instead. As with any amplified system, confirm your battery and charging system can support the additional current draw before installation.