Kicker 43CWRT81 CompRT Series 8

Kicker 43CWRT81 CompRT Series 8 Inch Subwoofer Dual 1 Ohm

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Kicker 43CWRT81 CompRT Series 8 Inch Subwoofer Dual 1 Ohm

Availability: In stock
  • Size [in, cm]: 8, 20
  • Impedance [Ohms]: 1 DVC
  • Power Watts [peak/RMS]: 600/300
  • Sensitivity [dB 1w/1m]: 81.8
  • Mounting Depth [in, cm]: 2-11/16, 6.7

Kicker 43CWRT81

CompRT Series 8" Subwoofer Dual 1 Ohm

The only thing thin about the CompRT® Subwoofer is the mounting depth. Whether it’s on the road, sand or trail, these tough subs work perfectly in nearly anything with a motor.

Big Bass Anywhere
Your car’s back dash. The bags on your bike. Behind your ATV’s seats. Add the weatherproof CompRT Sub to your ride without sacrificing comfort or storage space.

Superior components make a huge difference. Dual voice coils, a unique heat management system and our signature red cone stitching all help to give you deep bass and outstanding reliability in our thinnest subwoofers.

Ready to Ride
This KICKER® sub is built to take the power and sound incredible. With recommended power ratings as high as 500 watts, it’s easy to get the bass you crave.

8" CompRT 1 Ohm
The CompRT Eight-Inch Subwoofer is an all-weather thin subwoofer with a pair of 1Ω voice coils. To be a truly motorcycle/ATV friendly subwoofer, the sub must be able to take the rain, snow and sun – and keep on playing A UV-resistant cone and surround help make the CopmpRT sound great where the road (or trail) take you. The CompRT Eight-Inch Subwoofer works best with a sealed or ported enclosure and 300 watts of recommended power. See below for more details.


  • Size [in, cm]: 8, 20
  • Impedance [Ohms]: 1 DVC
  • Power Watts [peak/RMS]: 600/300
  • Sensitivity [dB 1w/1m]: 81.8
  • Mounting Depth [in, cm]: 2-11/16, 6.7
  • Mounting Diameter [in, cm]: 7, 17.7
  • Min Sealed Box Vol [cu. ft, L]: 0.2, 5.66
  • Max Sealed Box Vol [cu. ft, L]: 1.0, 28.32
  • Min Vented Box Vol [cu. ft, L]: 0.8, 22.7
  • Max Vented Box Vol [cu. ft, L]: 1.2, 34

To use as a single subwoofer it is recommended to use a mono amplifier rated between 300 and 600 watts RMS that is safe to run at either 1/2 or 2 Ohm depending on your setup.

More Information
Product Name Kicker 43CWRT81 CompRT Series 8 Inch Subwoofer Dual 1 Ohm
Manufacturer Kicker
UPC 713034076421
Manufacturer's Warranty 1 Year Manufacture's Warranty
Manufacture's Warranty 2 N/A
Manufacturer Sku 43CWRT81
Speaker Size 8" Subwoofer
Woofer Composition Polypropylene
Woofer Surround Rubber
Sensitivity 82dB
RMS Power Handling (watts) 201-400
Peak Power Handling (watts) 401-600
Impedance (Ohms) Dual 1 Ohm
Cutout Diameter (in) 7
Top-mount Depth (Inches) 2 11/16
Shallow Mount Yes
Voice Coils Dual
California residents see Prop 65 Warnings