Polk Audio DB571


5×7-inch coaxial mobile/marine loudspeaker

Incredible Sound, Affordable Price

The db Series offers superior looks and even better sound, and all at a price that makes high performance affordable! The db571 works well in OEM factory systems, as well as with high-powered aftermarket head units and component power amps. And it delivers the classic Polk  performance and durability that has built the db Series’ reputation over the years.

The db571 Features:

Dynamic Balance® polymer/mica composite mineral filled cone is stiff yet lightweight for big sound, little distortion.

Marine Certified Polk db Series speakers are built tough to withstand the toughest environments so they are perfect for use in boats of all types.

19mm liquid-cooled silk/polymer composite dome tweeter with neodymium magnet for clear, detailed highs. (db690 model features 25mm tweeter & 19mm super-tweeter)

Low-mass 2-layer 25mm Kapton voice coil former is lightweight for high sound output.Kapton’s high melting temperature (725°F/400°C!) ensures high power handling and kick-butt reliability.

Durable butyl rubber surround won’t fall apart under the stress of extreme temperatures, sunlight or time, for years of the great Polk sound.

Pole plate heat sink promotes better heat dissipation for superior power handling and reliability.

Flat spider for faster, longer excursion linear motion.

Flexible woven leads sewn directly into spider for greater reliability.

Rock solid, acoustically inert stamped steel basket finished in rustproof gun metal gray.

Stainless steel mounting hardware.

One year parts & labor warranty.

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

Quantity 1
Diameter 3/4″ (1.91cm)
Type Silk/polymer composite dome
Mid / Woofer
Oval Height 5″ (12.70cm)
Oval Width 7″ (17.78cm)
Quantity 1
Diameter 5″ (12.70cm)
Type Dynamic Balance polymer/mica composite cone with rubber surround


Total Frequency Response 52Hz-22kHz
Nominal Impedance 4 ohms
Efficiency 93 dB
Power Handling
Continuous 60 watts
Peak 180 watts


Oval Cut-Out Height 4 15/16″ (12.54cm)
Oval Cut-Out Width 7 1/8″ (18.10cm)
Full-Range Mounting Depth
Top Mount 2 3/16″ (5.56cm)
Bottom Mount 2 5/8″ (6.67cm)


Unit of Measure pair


Speaker Warranty 1 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.


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