BOSS Audio Systems 5.25" Marine Coaxial Speakers MR52W

The BOSS Audio Systems MR52W are 5.25-inch weatherproof marine coaxial speakers delivering up to 150 watts peak power per pair for clear full-range sound on boats and outdoor rigs.

Built to tolerate sun, spray and humidity, the MR52W speakers combine a polypropylene cone, treated cloth surround and a mylar dome tweeter to reproduce music across 80 Hz–20 kHz. Their compact 6.25 x 6.25 x 3.25-inch frame and 2.2-inch mounting depth make them suitable for tight installations on boats, personal watercraft, and outdoor enclosures. Sold in pairs with a 4-ohm impedance, these 2-way speakers balance punchy mids, defined highs and marine-ready durability.

How durable are these speakers in marine environments?

The MR52W speakers are engineered with weatherproofing methods that help resist moisture, salt air and UV exposure. Materials like a polypropylene cone, treated cloth surround and plastic basket slow corrosion and degradation so the speakers last longer in harsh conditions.

• Weatherproof construction rated for marine use
• Treated cloth surround and mylar tweeter for moisture resistance
• Plastic basket that resists rust and salt corrosion

Will they fit my boat or enclosure, and what are the installation details?

The MR52W fits into a compact footprint with a 5-inch mounting hole and a 2.2-inch mounting depth, making them compatible with many dash, hatch and bulkhead locations. The overall speaker dimensions are 6.25 x 6.25 x 3.25 inches; confirm your mounting depth and hole size before purchasing.

• Mounting hole diameter: 5 inches
• Mounting depth required: 2.2 inches
• Overall dimensions: 6.25" x 6.25" x 3.25" per speaker

What kind of sound performance can I expect on board?

These are full-range, 2-way coaxial speakers tuned for balanced everyday listening rather than audiophile precision. With a frequency response of 80 Hz–20 kHz and 89 dB sensitivity at 1 W/1 m, expect clear highs from the 1" mylar dome tweeter and solid midrange from the polypropylene cone at practical listening levels.

• Peak power handling: 150 watts (pair-rated operation)
• Nominal impedance: 4 ohms for compatibility with most marine stereos
• System sensitivity: 89 dB for good on-deck output with moderate amplifiers

What warranty and support come with the MR52W speakers?

BOSS Audio Systems backs these speakers with a three-year platinum online dealer warranty when purchased through participating sellers, providing added confidence for marine use. Professional installation is recommended to ensure waterproofing and secure mounting are properly completed.

• 3-year platinum online dealer warranty via qualifying purchase
• Recommended professional installation for safety and longevity
• Customer support available through BOSS Audio Systems channels

Who is this for? The MR52W pair is aimed at boat owners, anglers and outdoor audio enthusiasts who want a compact, weather-tough speaker that delivers reliable full-range sound without requiring deep mounting space or high-end amplification. If you need durable marine speakers for wakeboats, pontoons, kayaks with enclosures, or any humid outdoor setting where splash resistance and easy installation matter, these speakers are a practical choice.