Marine

MM651UM

6 1/2-inch coaxial marine loudspeaker

6 1/2" coaxial
16.51cm coaxial

Price

$27995 per pair

Available Finishes:
Additional Images

Designed to Perform

Designed and styled specifically for use in the marine environment, The MM651UM isn’t just car speaker labeled for use on a boat. Used in a speaker can or installed on your boat, it works great for both! A unique tweeter-on-grille design eliminates the traditional tweeter post, resulting in a totally sealed front. With waterproof materials, it will stand up to just about any harsh marine environment while sounding great, thanks to Polk marine certification and Polk  technology.

MM651UM Features:

Completely sealed front design prevents water intrusion.

Built-on grille includes tweeter mount which eliminates the traditional tweeter "stalk".

Sealed crossover assembly is built into back of magnet means there’s no need to find room to hide an extra box.

Stainless steel heavy duty input terminals and mounting hardware will not corrode or tarnish.

Passes the most rigorous 600 hours of salt fog and UV testing (ASTM international B117-03 standard practice for operating salt spray (fog) apparatus and D4329-99 standard.

Dynamic Balance® driver technology for pure, distortion free sound.

Neodymium is a rare earth material we use in all MM driver magnets, excluding 461P, that are about 1/10 the weight of a comparable ceramic magnet and much more powerful.

Carbon composite basket based on the spokes of a wheel is lightweight and will not flex.

Woven glass composite cones feature tremendous stiffness-to mass ratio. Lower mass means faster transients and finer detail.

Klippel optimized components for the best possible performance, even at extreme listening levels.

Marine Certified Polk MM Series speakers are built tough to withstand the toughest environments so they are perfect for use in boats of all types. That’s why Correct Craft offers Polk speakers in their award-winning Nautiques ski and wakeboarding boats.

Large-diameter voice coil (30mm) increases reliability and power handling capacity.

All Polk products are made using the best materials and the most advanced manufacturing techniques. They pass the industry’s most exhaustive quality tests, including drop testing, extreme signal response and UV & salt exposure testing. Polk loudspeakers are built to perform for a lifetime.

Driver Complement

Tweeter
Quantity
Diameter1" (2.54cm) 
TypeDynamic Balance weather-resistant silk composite dome 
Mid / Woofer
Quantity
Diameter6 1/2" (16.51cm) 
TypeDynamic Balance weather resistant poly-composite cone 

Electrical

Total Frequency Response40-25kHz 
Nominal Impedance4 ohms
Efficiency92 dB
Power Handling
Continuous100 watts
Peak200 watts
Recommended Amplifier Power15-150 watts per channel

Dimensions

Cut-Out Diameter5 1/16" (12.86cm) 
Grille
Height1 1/8" (2.86cm) 
Full-Range Mounting Depth
Top Mount2 5/8" (6.67cm) 
Driver Mounting Depth
Bottom Mount2 7/8" (7.30cm) 

Shipping

Unit of Measurepair 

Warranty

Speaker Warranty1 year parts and labor (original purchaser) 

Specifications, dimensions and features subject to change without notice. For more information call us at 1-800-377-7655 (USA and Canada). Outside of North America call +1 (410) 358-3600.

MM651 UM Media

MM651UM Accessories