

Rockville SS8P 400w 8" Slim Under-Seat Active Powered Car/Truck Subwoofer Sub
Key item features
- Compact Design: The Rockville SS8P subwoofer is only 2.8" thick, making it ideal for fitting under car or truck seats.
- Powerful Performance: Delivers 400 watts of peak power and 100 watts RMS, providing robust bass sound.
- Durable Construction: Enclosure made from cast aluminum, ensuring it stays cool and durable.
- Advanced Inputs: Features low level RCA input and high level inputs with auto turn-on technology for versatile installation.
- Comprehensive Protection: Equipped with thermal, short, and overload protection circuits for safe operation.
- Adjustable Settings: Includes adjustable input sensitivity, low pass filter, bass boost, and phase switch for customized sound.
- Convenient Controls: Comes with a remote bass knob and subwoofer level remote control for easy adjustments.
- Specifications: Measures 11.4" x 8.3" x 2.8", with a frequency response of 20Hz - 150Hz and a signal to noise ratio of >90dB.
Specs
- Rms power rating100 W
- Woofer size8 in
- Subwoofer typePowered Car Subwoofer
- Impedance4 ohm
- Peak audio power handling400 W
- Freq range20 Hz
Reviews summary
Pros
- : Fits under seat with great bass sound.
- : Delivers clear low-frequency audio output.
- : Delivers precise low-frequency sound without distortion.
- Free shipping
Free 30-day returns
(Only one option can be selected at a time)
How do you want your item?
About this item
Product details
Video of SS8P:
Description:
The SS8P is an all in one solution to give you great sounding bass in your vehicle without taking up a lot of space. This sub enclosure is only 2.8" thick so that it can easily fit under your seat. The amplifier is built in, so installation and wiring is clean and simple. This is a true all in one subwoofer solution with the subwoofer built into the enclosure along with a top of the line amplifier built in as well.
We focused on making installation a breeze so we designed this unit with you the customer in mind. We added high level inputs so you can install this to an aftermarket or factory system. The high level input allows you to install this even if you have no preamp outputs available.
The smart turn-on circuit will sense that an audio signal is present and turn on the amplifier. When you turn off your music signal the amplifier built into this subwoofer system will automatically turn itself off. Something else we did to make installation quick and easy is we put all the inputs and outputs on one side. This makes wiring neater and easier. Our competitor's models are more challenging to install.
The SS8P has 400 watts of peak power and 100 watts RMS. This has great controls so you can adjust the sound to your liking. It has a level control for the volume and subsonic filter to filter out the really low frequencies which the human ear cannot hear. This also has a low pass crossover filter, phase control, input sensitivity, and bass boost.
Included is a remote bass knob, and mounting hardware but the best thing about our model is the sound. It is slim but it sounds like a full sized subwoofer If you are not happy with it we will offer you a 90-day money back guarantee. If you don't like the sound, we will send you a pre-paid label and refund you in full!
Features:
Rockville SS8P 8" 400w Slim Under-Seat Active Powered Car/Truck Subwoofer Sub
Enclosure is made out of cast aluminum which stays cool at all times
Peak Power Handling: 400 Watts
RMS Power Handling: 100 Watts
Heavy Duty Mounting Feet
PWM MOSFET Power Supply
Low Level RCA Input
High Level Inputs with Auto Turn-On Technology
Adjustable Input Sensitivity
Soft Delayed Remote Turn-On
Thermal Protection Circuit, Short Protection Circuit
Overload Protection Circuit
Green Power/Red Protect LED
Phase Switch: 0° or 180°
Low Pass Filter: 50Hz - 150Hz
Bass Boost: 0 - 12dB @ 45Hz
Built in Subsonic Filter @ 20Hz
THD: < 0.4%
Subwoofer Level Remote Control
Fuse Rating: Single 15A
Specifications:
Peak Power 400 Watts
RMS Power: 100 Watts
Impedance: 4 Ohm
Dimensions (L x W X H): 11.4" x 8.3" x 2.8" Inches
Frequency Response: 20Hz - 150Hz
Signal to Noise Ratio: >90dB
Sensitivity: 90dB @ 1w / 1m
Input sensitivity, Low level: 300mV
Input sensitivity, High level: 1.0V
- Rockville SS8P 8" 400w Slim Under-Seat Active Powered Car/Truck Subwoofer Sub.
- Enclosure is made out of cast aluminum which stays cool at all times. Peak Power Handling: 400 Watts.
- RMS Power Handling: 100 Watts. Heavy Duty Mounting Feet. PWM MOSFET Power Supply. Low Level RCA Input. High Level Inputs with Auto Turn-On Technology. Adjustable Input Sensitivity. Soft Delayed Remote Turn-On. Thermal Protection Circuit, Short Protection Circuit. Overload Protection Circuit. Green Power/Red Protect LED. Phase Switch: 0° or 180°.
- Low Pass Filter: 50Hz - 150Hz. Bass Boost: 0 - 12dB @ 45Hz. Built in Subsonic Filter @ 20Hz. THD: < 0.4%. Subwoofer Level Remote Control. Fuse Rating: Single 15A.
- Specifications: Peak Power 400 Watts. RMS Power: 100 Watts. Impedance: 4 Ohm. Dimensions (L x W X H): 11.4" x 8.3" x 2.8" Inches. Frequency Response: 20Hz - 150Hz. Signal to Noise Ratio: >90dB. Sensitivity: 90dB @ 1w / 1m. Input sensitivity, Low level: 300mV. Input sensitivity, High level: 1.0V
Specifications
Rms power rating
Woofer size
Subwoofer type
Brand
Warranty
Warranty information
Similar items you might like
Based on what customers bought
Best seller New Kicker 43C104 10-inch 300 Watts Max Power Single 4 Ohm Car Subwoofer $89.88
Best seller
Sponsored$8988current price $89.88New Kicker 43C104 10-inch 300 Watts Max Power Single 4 Ohm Car Subwoofer
1004.1 out of 5 Stars. 100 reviewsSave withDelivery as soon as 8amShipping, arrives todayPickup as soon as 7amSLUMLOVE 10" 1250W Car Subwoofer and Amp Package with RGB LED Lights - Slim Under-Seat Powered Audio for Cars, Trucks, SUVs, and Jeeps, Enjoy Audio Experience $95.47
$9547current price $95.47SLUMLOVE 10" 1250W Car Subwoofer and Amp Package with RGB LED Lights - Slim Under-Seat Powered Audio for Cars, Trucks, SUVs, and Jeeps, Enjoy Audio Experience
114.5 out of 5 Stars. 11 reviewsBest seller 10" 1200W Car Subwoofer, 2025 Upgraded Slim under Seat Powered Car Subwoofer $82.99
Best seller
$8299current price $82.9910" 1200W Car Subwoofer, 2025 Upgraded Slim under Seat Powered Car Subwoofer
163.2 out of 5 Stars. 16 reviewsRockville SS10P 10" 800w Slim Under-Seat Active Powered Car/Truck Subwoofer Sub $139.95
$13995current price $139.95Rockville SS10P 10" 800w Slim Under-Seat Active Powered Car/Truck Subwoofer Sub
244.6 out of 5 Stars. 24 reviews600W Slim Under-Seat Subwoofer Powered Car Truck Sub w/ Amp Kit Speaker 8 " $72.32
$7232current price $72.32600W Slim Under-Seat Subwoofer Powered Car Truck Sub w/ Amp Kit Speaker 8 "
Rockville RV208P Dual 8" 800w Car Audio Subwoofers in Vented Sub Enclosure Box $89.95
$8995current price $89.95Rockville RV208P Dual 8" 800w Car Audio Subwoofers in Vented Sub Enclosure Box
194.3 out of 5 Stars. 19 reviewsRockville RW8CA 8" 600 Watt Low Profile Under-Seat Active Powered Car Subwoofer $119.95
$11995current price $119.95Rockville RW8CA 8" 600 Watt Low Profile Under-Seat Active Powered Car Subwoofer
45 out of 5 Stars. 4 reviewsRockville RMW8A 8" 800 Watt Ported Powered Truck Subwoofer In Slim Enclosure $109.95
$10995current price $109.95Rockville RMW8A 8" 800 Watt Ported Powered Truck Subwoofer In Slim Enclosure
44.3 out of 5 Stars. 4 reviewsRockville SS65P 400w 6.5" Slim Under-Seat Active Powered Car/Truck Subwoofer Sub $94.95
$9495current price $94.95Rockville SS65P 400w 6.5" Slim Under-Seat Active Powered Car/Truck Subwoofer Sub
15 out of 5 Stars. 1 reviews8'' 400 Watt Carpeted Subwoofer Tube Enclosure System $67.99
$6799current price $67.998'' 400 Watt Carpeted Subwoofer Tube Enclosure System
174.2 out of 5 Stars. 17 reviews8" 400W Under Seat Slim Powered Car/Truck Subwoofer System with Built-in Amplifier - Bass Boost for Enhanced Audio $86.56
$8656current price $86.568" 400W Under Seat Slim Powered Car/Truck Subwoofer System with Built-in Amplifier - Bass Boost for Enhanced Audio
Rockville SS8P 400 Watt Slim Under-Seat Powered Car/Truck Subwoofer Sub Amp Kit $109.95
$10995current price $109.95Rockville SS8P 400 Watt Slim Under-Seat Powered Car/Truck Subwoofer Sub Amp Kit
284.5 out of 5 Stars. 28 reviewsAWESAFE 10 Inch 1200W Car Subwoofer Slim Under Seat Powered High/Low Level Input Built-in Amplifier for Cars & Trucks $71.59
$7159current price $71.59AWESAFE 10 Inch 1200W Car Subwoofer Slim Under Seat Powered High/Low Level Input Built-in Amplifier for Cars & Trucks
11 out of 5 Stars. 1 reviews8-Inch 600W Slim Under-Seat Powered Car Subwoofer Sub Amp Kit, Aluminum Alloy, Low-Frequency Audio, Compatible with 12V Power Cars/Trucks $72.54
$7254current price $72.548-Inch 600W Slim Under-Seat Powered Car Subwoofer Sub Amp Kit, Aluminum Alloy, Low-Frequency Audio, Compatible with 12V Power Cars/Trucks
BOSS Audio Systems BAB8 8” Car Subwoofer with Built-in Amplifier, 800W Max $99.99
$9999current price $99.99BOSS Audio Systems BAB8 8” Car Subwoofer with Built-in Amplifier, 800W Max
753.5 out of 5 Stars. 75 reviewsRockville USS10 10" 800w Slim Under-Seat Active Powered Car/Truck Subwoofer Sub $139.95
$13995current price $139.95Rockville USS10 10" 800w Slim Under-Seat Active Powered Car/Truck Subwoofer Sub
11 out of 5 Stars. 1 reviews15 Inch Subwoofer 450 Watt Car Audio Sub Woofer 4 Ohm Pair w Deep Bass Replacement Component Loud Speaker for Auto Truck Vehicle -WF 15 140 4OHM 2PCS $88.00
$8800current price $88.0015 Inch Subwoofer 450 Watt Car Audio Sub Woofer 4 Ohm Pair w Deep Bass Replacement Component Loud Speaker for Auto Truck Vehicle -WF 15 140 4OHM 2PCS
Planet Audio P10AW 10 Inch Under Seat Powered Car Audio Subwoofer - 1000 Watts Max, Low Profile, Built in Amplifier, For Truck, Boxes and Enclosures, Remote Subwoofer Control $93.00
$9300current price $93.00Planet Audio P10AW 10 Inch Under Seat Powered Car Audio Subwoofer - 1000 Watts Max, Low Profile, Built in Amplifier, For Truck, Boxes and Enclosures, Remote Subwoofer Control
363.9 out of 5 Stars. 36 reviewsRollback 10 inch 1200W Max Power Car Audio Dual 4 Ohm Car Subwoofer $79.00 Was $89.00
Rollback
$7900current price $79.00, Was $89.00$89.0010 inch 1200W Max Power Car Audio Dual 4 Ohm Car Subwoofer
55 out of 5 Stars. 5 reviewsSound Storm Laboratories LOPRO8 8" Powered Under-Seat Car Subwoofer with Built-in Amplifier $125.57
2 optionsAvailable in additional 2 options$12557current price $125.57Sound Storm Laboratories LOPRO8 8" Powered Under-Seat Car Subwoofer with Built-in Amplifier
554.3 out of 5 Stars. 55 reviews
Check out these related products
Rockville SS65P 400w 6.5" Slim Under-Seat Powered Car/Truck Subwoofer Amp Kit $104.95
$10495current price $104.95Rockville SS65P 400w 6.5" Slim Under-Seat Powered Car/Truck Subwoofer Amp Kit
Rockville RW10CA 10" 800 Watt Slim Low Profile Active Powered Car Subwoofer Sub $159.95
$15995current price $159.95Rockville RW10CA 10" 800 Watt Slim Low Profile Active Powered Car Subwoofer Sub
63.3 out of 5 Stars. 6 reviewsRockville RW10CA 10" 800 Watt Under-Seat Slim Amplified Car Subwoofer Wire Kit $169.95
$16995current price $169.95Rockville RW10CA 10" 800 Watt Under-Seat Slim Amplified Car Subwoofer Wire Kit
54.8 out of 5 Stars. 5 reviewsPyramid PB918 2CH Ampflier 2000W MAX Vehicle Audio Amplifier, Black, 5.85 lbs $64.99
$6499current price $64.99Pyramid PB918 2CH Ampflier 2000W MAX Vehicle Audio Amplifier, Black, 5.85 lbs
133.7 out of 5 Stars. 13 reviewsSound Storm Laboratories LOPRO10 10” Low Profile Amplified Car Subwoofer $125.57
2 optionsAvailable in additional 2 options$12557current price $125.57Sound Storm Laboratories LOPRO10 10” Low Profile Amplified Car Subwoofer
264.3 out of 5 Stars. 26 reviewsPyramid PB918 2000W 2 Channel Car Audio Amplifier Power Amp Bridgeable (2 Pack) $117.99
$11799current price $117.99Pyramid PB918 2000W 2 Channel Car Audio Amplifier Power Amp Bridgeable (2 Pack)
Customer ratings & reviews
Reviews summary
Pros
- : Fits under seat with great bass sound.
- : Delivers clear low-frequency audio output.
- : Delivers precise low-frequency sound without distortion.
Customer photos
Showing 1-3 of 18 reviews
Verified Purchase
Wow! This little speaker packs a punch. I installed it in my 2005 Tundra double cab under the driver's seat. The 8" sub provides more bass than I would have ever imagined.
Verified Purchase
Me and My Colorado
I had a tint/stereo shop install it in my new 2025 Chevy Colorado. An hour later and pooofff... A well balanced sound system, w/o an external amp or upgraded speakers.
Verified Purchase
Fast delivery and good product




