The CompRT line of ultra-thin subwoofers fits under your seat or behind your back bench with ease. Now even more efficient and sporting a slick, blacked-out cone, the CompRT® gives you all the bass in very little space!

The CompRT 8-inch Subwoofer is an all-weather thin subwoofer with a pair of 4-Ohm voice coils. With a mounting depth under three inches and plenty of power handling, this go-anywhere sub is as flexible as it is powerful. A UV-resistant cone and surround help make the CompRT sound great wherever the road (or trail) takes you.

An advanced suspension and heat management system helps to keep the bass powerful, deep and consistent. To make our subs even more reliable, KICKER engineers developed Forced-Air Cooling™ to help our subs run 20 percent cooler than before.

Our signature red double stitching makes an outstanding bond between the improved Santoprene surround and polypropylene woofer cone. Revolutionary SoloKon™ technology joins the cone to the vented back brace, creating a single integrated unit that both cools the motor and eliminates distortion.

The CompRT 8-inch Subwoofer works best with a sealed enclosure and 300 watts of recommended power. See below for more details.

SIZE [in, cm]: 8, 20
IMPEDANCE [Ohms]: 4 DVC
Recommended Amplifier Power (watts RMS) 300
Peak Power (watts, per ANSI/CTA-2031-A) 600
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

48CWRT84 Thiele/Small Parameters
Re 7.665 Ohm electrical voice coil resistance at DC
Krm 0.0092 Ohm WRIGHT inductance model
Erm 0.815 WRIGHT inductance model
Kxm 0.03015 Ohm WRIGHT inductance model
Exm 0.765 WRIGHT inductance model
Cmes 411.38 µF electrical capacitance representing moving mass
Lces 35.23 mH electrical inductance representing driver compliance
Res 84.235 Ohm resistance due to mechanical losses
fs 41.8 Hz driver resonance frequency
Mms 81.7175 g mechanical mass of driver diaphragm assembly including air load and voice coil
Mmd 78.4355 g mechanical mass of voice coil and diaphragm without air load
Rms 2.3595 kg/s mechanical resistance of total-driver losses
Cms 0.177 mm/N mechanical compliance of driver suspension
Kms 5.645 N/mm mechanical stiffness of driver suspension
Bl 14.094 Tm force factor (Bl product)
Qtp 0.8365 total Q-factor considering all losses
Qms 9.1005 mechanical Q-factor of driver in free air considering Rms only
Qes 0.8285 electrical Q-factor of driver in free air considering Re only
Qts 0.7595 total Q-factor considering Re and Rms only
Vas 10.4032 I equivalent air volume of suspension
n0 0.0885 % reference efficiency (2 pi-radiation using Re)
Lm 81.655 dB characteristic sound pressure level (SPL at 1m for 1W @ Re)
Lnom 81.845 dB nominal sensitivity (SPL at 1m for 1W @ Zn)
Sd 203.58 cm² diaphragm area
Xmax 8 mm Xmax (Linear Excursion)

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