No one’s music is really all there without a dedicated subwoofer to add the thump that gives a performance its raw, in-your-face feeling. If you’re serious about your music, you want to take a serious look at our subwoofers for filling out the low notes. And Polk subwoofers are styled to make an install a real contender on the show circuit. All at a price that’s hard to beat.

db1240DVC 12” Subwoofer

12-inch dual voice coil subwoofer

The db1240DVC gives you the power handling and the wiring options to configure your sub setup to realize maximum bass for your mobile audio install. Plus the db1240DVC has all the Polk features that make this 12-inch sub one of the best at low-down performance.

RRP $169.00 AUD

Product Manual

Polypropylene cone with 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 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 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.

Single voice coil version also available - db1240

Optional db12G grille is available.

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

Diameter 12" (30.48cm) 
Type Dynamic Balance woofer with polymer composite cone 


Total Frequency Response 27-200 Hz 
Nominal Impedance Dual 4 ohms
Efficiency 88 dB
Power Handling
Continuous 360 watts
Peak 720 watts
Voice Coil
Driver Diameter 2" (5.08cm) 


Unit of Measure each 


Diameter 11 1/16" (28.10cm) 
Driver Mounting Depth
Top Mount 6 1/16" (15.40cm) 
Bottom Mount 6 9/16" (16.67cm) 

Thiele / Small Parameters

Resonant Frequency 27.8 Hz
Xmax Linear .728 inch/18.5 mm (peak to peak) 
MMS 141.7g 
BL 9.2 Tesla Meters 
CMS 232.4 Micro Meters 
Recommended Enclosure Sealed/Ported/Bandpass 
SD 80.6 sq in/520 sq cm 
VAS 3.10 cubic ft/87.8 L 
QTS .5 
QES .5 
QMS 10.8 


Speaker Warranty 1 year parts and labor (original purchaser)