Rockville 5.25" Marine Speakers MS525W - 400W IP56

The Rockville MS525W are 5.25" marine-grade, IP56 waterproof 2-way speakers built to deliver up to 400W peak (200W RMS per pair) of clear, weather-resistant audio for boats and outdoor vehicles.

Designed specifically for marine and outdoor use, the MS525W pair combines anti-UV construction, corrosion-resistant hardware, and a two-way driver layout to produce punchy mids and crisp highs even in salt-spray and sun-exposed environments. These speakers are tuned for practical installation on boats, ATVs, and outdoor spaces and include the mounting hardware and template needed for a fast fit.

How do these speakers hold up in marine conditions?

Rockville engineered the MS525W to resist water intrusion and UV degradation so they keep performing season after season. An IP56 rating protects against strong water jets and dust, while anti-UV components prevent sun damage to plastics and grills.

• IP56 waterproof rating for splash and spray protection
• Anti-UV molded ABS basket and grill for sun resistance
• Stainless steel mounting hardware to prevent rust
• Injection-molded polypropylene cone resists moisture and deformation

What sound performance can I expect on the water?

The MS525W pair delivers a balanced two-way soundstage with defined highs from the PEI diaphragm tweeter and solid midrange from the polypropylene woofer. Rated for up to 400W peak power on a 4-ohm load, they reproduce music, radio, and streamed audio clearly at moderate to high listening levels.

• 400W peak (200W RMS) per pair with 4Ω impedance for robust output
• Frequency coverage roughly 110Hz–20kHz for vocals and treble detail
• 1" ASV voice coil with PEI tweeter for crisp highs
• Driver parameters tuned for marine use: Xmax ~1.5mm and SD ~78.54 cm²

How easy is installation and what hardware is included?

Installation is straightforward and aimed at installers and DIY boat owners. Rockville supplies pre-installed mounting screws, a mounting template, and stainless steel hardware so you can align and secure the speakers quickly into typical 5.25" cutouts.

• Pre-installed mounting screws reduce assembly time
• Stainless steel hardware included to resist corrosion
• Mounting template for accurate cutout placement
• Fits standard 5.25" speaker openings used on many boats and ATVs

Which technical specs matter for matching an amplifier?

Match the MS525W to an amplifier or receiver designed for 4-ohm speakers and adequate RMS power to avoid distortion. Key parameters — low Vas and modest SD — indicate these are compact drivers optimized for near-field and onboard sound rather than deep bass extension.

• Nominal impedance: 4 ohms — ensure amp compatibility
• Power handling: 200W RMS (400W peak) — size amp accordingly
• Driver details: magnet 6 oz, Fs 142 Hz, Xmax ~1.5 mm for controlled excursion
• Useful for full-range setups; consider a subwoofer for deeper bass

Who is this for? The Rockville MS525W pair is aimed at boat owners, anglers, and outdoor vehicle enthusiasts who need reliable, weatherproof sound from compact 5.25" speakers. If you want a corrosion-resistant, UV-stable speaker set that mounts into standard cutouts and plays music, radio, or Bluetooth-sourced audio clearly on decks, pontoons, or off-road rigs, these speakers are a practical, affordable choice. They suit installations where midrange clarity and treble detail matter more than deep low-frequency output; pair them with a suitable marine amplifier or add a marine subwoofer for fuller bass.