BOSS Audio Systems 5.25" Marine Coaxial Speakers MR52B

The BOSS Audio Systems MR52B are 5.25-inch, weatherproof marine coaxial speakers that deliver up to 150 watts per pair of balanced, full-range sound for boats and outdoor use.

Designed for harsh marine environments, the MR52B pairs rugged materials and compact dimensions to give clear midrange, lifelike highs and reliable low-frequency presence without taking up much space. These coaxial two-way speakers include a 1" mylar dome tweeter and a polypropylene cone for broad frequency coverage, and they ship with grille and magnet covers for added protection during storage or transit.

How do these speakers perform on boats and near water?

The MR52B are built specifically for marine settings: materials and construction resist moisture, salt, and UV exposure while keeping consistent sound quality. Their sensitivity and frequency range suit music playback at moderate to high volumes common on recreational boats.

• Weatherproof construction and treated cloth surround for moisture resistance
• Polypropylene cone and 1" aluminum voice coil for stable performance
• Frequency response 80 Hz–20 kHz covers vocals and highs clearly
• Included magnet covers and grilles protect drivers when not in use

What sound quality should I expect from 5.25-inch coaxial two-way speakers?

With a two-way coaxial design, the MR52B reproduces both midrange and treble with clarity from a single compact speaker. The 1" mylar tweeter handles the highs while the polypropylene woofer provides controlled mids and some bass; for deep bass, pair with a dedicated subwoofer.

• Sensitivity 89 dB yields efficient output with modest amplifier power
• Rated impedance 4 ohms matches most marine/amplified head units
• 150 watts per pair peak power handling supports dynamic playback
• Full-range response suitable for playlists, talk, and navigation audio

How easy is installation and what are the physical dimensions?

These speakers are compact and designed for straightforward retrofit or new installations in boats with standard 5.25-inch cutouts. Lightweight construction keeps load low, and included grills simplify finishing and protection.

• Overall dimensions: depth 6.3", width 6.3", height 3.3" for tight mounting spaces
• Weight per pair approximately 3.5 lbs — minimal structural impact
• Standard mounting pattern compatible with most marine dash and pod locations
• Grills and magnet covers included to complete installation and safeguard drivers

What technical specs and accessories are included?

The MR52B includes the key components and specifications you need to match with your system. Owners receive both protective accessories and data to plan wiring and amplification.

• Impedance: 4 ohms for broad amplifier compatibility
• Frequency response: 80 Hz–20 kHz, sensitivity: 89 dB
• Drivers: polypropylene cone, 1" aluminum voice coil, 1" mylar dome tweeter
• Accessories: magnetic covers and protective grills included in the box

Who is this for: The BOSS Audio Systems MR52B speakers are a practical choice for boat owners, coastal homeowners, or anyone needing compact, weather-resistant full-range speakers for outdoor environments. They suit users who want reliable, clear sound from a small footprint, packaged with protective hardware for seasonal use or transport.