Boss Audio MR652C 6.5" Coaxial Marine Speaker — 350W, 92dB (Sold Individually)

6.5" Coaxial Marine Speaker — High-Output, Sold Individually

Note: This listing is for a single speaker. Order two for a stereo pair.

The Boss Audio MR652C is a high-output 6.5" coaxial marine speaker with a 350W power rating and 92dB sensitivity — one of the louder options in the marine speaker category at this size. The coaxial design mounts the 1" tweeter on the same axis as the woofer cone, delivering a cohesive, point-source sound stage that works well in open-air cockpit and helm environments where sound dispersion matters.

With a 60Hz–20kHz frequency response and ±1dB linearity, it covers the full audible range with solid bass extension for a 6.5" driver. The 4 ohm impedance is compatible with most marine head units and amplifiers. Specific mounting dimensions are provided below — confirm cutout and depth clearance before ordering.

Specifications

• Size: 6.5" (6-1/2")
• Configuration: Coaxial (2-way)
• Power handling: 350W total
• Impedance: 4 ohm
• Frequency response: 60 Hz – 20 kHz (±1 dB)
• Sensitivity: 92 dB (1W/1m)
• Tweeter: 1"
• Mounting depth: 2.44"
• Mounting diameter: 5.08"
• Quantity: Sold individually (1 speaker)
• SKU: 153-MR652C

Best Use Case

The MR652C is the right choice when maximum output and sensitivity matter — open cockpits, helm stations, or any location where wind and engine noise compete with the audio. The 92dB sensitivity means it plays noticeably louder than 90dB speakers at the same power level, which is a meaningful advantage in noisy marine environments. The coaxial design suits installations where a single driver needs to cover a wide listening area. Confirm the 5.08" mounting diameter and 2.44" mounting depth against your installation location before ordering — these are tighter specs than a standard 6.5" cutout.

Also Consider

• Boss Audio MR62B 6.5" Weatherproof Marine Speakers — Black (Pair) — sold as a pair, cloth surround, confirmed weatherproof
• Boss Audio MR60B 6.5" Marine Speakers — Black (Pair) — sold as a pair, 200W peak
• Boss Audio MRGB65 6.5" Marine Speakers with RGB Lighting — White (Pair) — sold as a pair, RGB accent lighting
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Parts Desk Insights

The most important point of sale detail for the MR652C is that it is sold individually — customers expecting a pair at this price point will be disappointed. Make this clear at the point of inquiry. The 92dB sensitivity is the headline spec vs. the 90dB models: every 3dB of sensitivity doubles perceived loudness at the same power, so the MR652C is meaningfully louder per watt than the MR60B or MR62B. The 5.08" mounting diameter is narrower than a standard 6.5" cutout (typically 5.25"–5.5") — confirm the customer’s existing cutout size before recommending. The 2.44" mounting depth is moderate and should fit most standard installations, but confirm clearance behind the mounting surface. Weatherproof rating is not confirmed in the available product data — verify with supplier before sale if the customer asks.