$99.99
List Price
-$50.00
Instant Savings
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8" Single 4 Ohm Marine Certified Subwoofer
Power Handling:
Peak: 360 watts
RMS: 180 watts
Impedance: Single 4 ohm
Polypropylene cone woofer
Santoprene rubber surround
Marine certified: capable of withstanding harsh marine environment
Vented coil coupler
Fire-retardant NOMEX spider with linear motion
Designed and aligned with Klippel laser analyzer
Triple vented 4-layer Kapton single 4 ohms voice coil
Frequency response: 30-200 Hz
Sensitivity: 85 dB
1-year SonicElectronix.com warranty
Product History:
(newest, current model)
(previous model, replaced by Polk Audio db840)
Review Summary Nobody rated the Polk Audio db840 yet
Product Summary
Manufacturer: Polk Audio
Model number:
db840
UPC :747192113766 Weight: 7.00 lbs
Internal SKU: db840
Internal Product ID: 12333
Sonic Electronix has the best deals and selection out there. They have great products, shipping, prices, and service. This is the first item that I have bought for myself off of here but I bought a head unit for a friend off of here and it came with everything you need to install.
- Dan from Beaver Falls,PA
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