FS DB104 subs i got 4 of em

[Dominic49]

FS DB104 subs x4 new in box $50 a piece OBO









Polypropylene cone with a rigid ABS dustcap to stiffen the cone for greater mechanical stability and lower 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. That's why Correct Craft offers Polk Audio speakers in their award-winning Nautiques ski and wakeboarding boats.
Santoprene surround is impervious to extremes in temperature, humidity and exposure to sunlight for excellent long term reliability.
Fire-retardant flat NOMEX® Spider allows extended linear motion while providing highly reliable mechanical and thermal stability.
Double venting of the 4-layer Kapton Voice Coil Former, Cone/Coil Coupler and Pole Piece contribute to the high power handling and reliability of the db Series subs.
As with all Polk Audio subwoofers, the voice coil alignment, motor and suspension were optimized using a state-of-the-art Klippel laser analyzer. The result is superior cone travel linearity for flatter response and lower distortion.
<li>Driver Complement Woofer 1 - 10" Diameter (25.40cm)
Dynamic Balance Polymer Composite dish cone Electrical Overall Frequency Response 28-200 Nominal Impedance 4 ohms Power Handling (continuous) 270 w Power Handling (peak) 540 w Efficiency 86 dB Voice Coil Diameter: Driver 2" (5.08cm) Driver Mounting Depth Top Mount 5-1/2" (13.97cm) Bottom Mount 6-1/4" (15.88cm) Cut-out Driver Cut-out Diameter 9-1/16" (23.02cm) Theile/Small Parameters Recommended Enclosure Sealed / Ported / Bandpass Resonant Frequency 37 Hz Qms 7.0 Qes 0.62 Qts 0.57 Vas 0.85 cu. ft. / 24.0 L Sd 54.25 sq. in. / 350 sq. cm. Xmax (linear) 0.3 inch / 7.5 mm Xmax (mechanical) 1.0 inch / 25.4 mm Le 1.85 mH