Polk Car Audio - DB840 DVC

8" Dual Voice Coil Mobile Audio/Marine Subwoofer


Incredible Sound, Affordable Price.



The compact db840DVC comes with all the Polk goodies that make this a great entry level mobile audio subwoofer for installs on land or sea. And because its a dual voice coil configuration, you have lots of wiring options for matching your amplifier's capabilities.

db840DVC Features:

"Dished" polypropylene cone supported by a vented cone/coil coupler stiffens 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.

Triple 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 - db840

Optional db8G grille is available.

Specifications:

Dimensions
Cut-Out Diameter: 7 1/16 (17.94cm) "
Driver Mounting Depth - Bottom Mount: 4 9/16 (11.59cm) "
Driver Mounting Depth - Top Mount: 4 (10.16cm) "
Driver Complement Subwoofer
Diameter 8 (20.32cm) "
Quantity 1
Type: Dynamic Balance woofer with polymer composite cone
Electrical

Efficiency: 85 dB
Nominal Impedance: Dual 4 ohms
Total Frequency Response: 30-200 Hz
Power Handling - Continuous: 180 watts
Power Handling - Peak: 360 watts
Voice Coil - Driver Diameter: 1 1/2 (3.81cm) "
Thiele / Small Parameters
BL 6.9 Tesla Meters
CMS 149.5 Micro Meters
MMS 65g
QES 0.62
QMS 14.1
QTS 0.59
Recommended Enclosure Sealed/Ported/Bandpass
Resonant Frequency 43 Hz
ThSD 35.65 sq in/230 sq cm
VAS .55 cubic feet/11.3 L
Xmax - Xmax Linear .24 inch/6.1 mm (peak to peak)

Available in:
Size: Sold as Singles

MSRP: $140.00 CAD

8

Click to enlarge