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Rockville SS8P 400 Watt Slim Under-Seat Powered Car/Truck Subwoofer Sub+Amp Kit Black

4.5 4.5 out of 5 stars 1,406 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice in Car Component Subwoofers by Rockville

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Purchase options and add-ons

Brand Rockville
Model Name SS8P
Speaker Type Subwoofer
Connectivity Technology RCA
Special Feature Protection

About this item

  • Package Includes: (1) Rockville SS8P 400 Watt Slim Under-Seat Active Powered Car/Truck Subwoofer Sub, (1) Rockville RWK10 10 Gauge Amp Installation Kit ANL Fuse Holder 100% Copper RCA
  • 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
  • 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 RWK10 10 Gauge 2 Channel Car Amplifier Wiring Installation Kit. (1) 17 High Grade Twisted Pair of 100% Copper RCA Cable. 17' 10 Gauge Translucent Blue SuperFlex Power Cables. 17 18 Gauge Blue Remote Cable. 17 16 Gauge Clear Speaker Wire. 3' 10 Gauge Clear SuperFlex Ground Wire. Gold Plated AGU Heat Resistant Fuse Holder. 40 Amp ATU Inline Fuse. 7 Split Tube Loom. Accessories Included: Wire Ties, Ring Terminals, Butt Connectors, Spades, and Grommets . Soft abrasion proof insulating jacket allows for 100% improved flexibility. PVC outer jacket can with-stand an extreme temperature range of -40 to 220 degrees F

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Product Description

Rockville SS8P 400 Watt Slim Under-Seat Powered Car/Truck Subwoofer Sub+Amp Kit

1

Package Includes:

  • (1) Rockville SS8P 400 Watt Slim Under-Seat Active Powered Car/Truck Subwoofer Sub
  • (1) Rockville RWK10 10 Gauge Amp Installation Kit ANL Fuse Holder 100% Copper RCA

________________________________________________________________________________________________________________________________________

Description of SS8P:

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.

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

________________________________________________________________________________________________________________________________________

Description of RWK10:

The Rockville RWK10 10 AWG (American Wire Gauge) amp kit has the following differences over other amp kits on the market.

1. Our RCA cables are 100 % copper. These are top of the line RCA cables

2. Better Resistance: The only thing that really matters with wires is the resistance rating. This is a measurement of conductivity and how much signal is loss per foot of wire.

3. We do not cheat you on the thickness of the wire. These are standard American wire gauge thickness. Other brands in the market place write 10 gauge, but cheat you on the thickness. We are honest about the thickness.

4. The Rockville amplifier installation kits feature a new soft abrasion proof insulating jacket. This rugged PVC outer jacket allows for 100% improved flexibility over standard power cables making them extremely easy to route through your vehicles interior, and it maintains exceptional resistance to grease and oil. The PVC outer jacket can with-stand an extreme temperature range of -40 to 220 degrees F.

The RCA signal transfer cables included in this kit feature blue and silver twisted pair technology in a clear outer jacket insulation skin. Not only do the blue and silver wires look cool but they also provide superior signal transfer with maximum noise suppression. They are 100% copper to provide absolute lossless perfect signal transfer to your receiver. This technology reduces interference, so your audio signal flows clean and pure at all power levels.

The included 7 split loom tube provides protection for your power cable from the typically harsh environment found under the hood of your car.

AudioSavings product experts have tested this amp kit against many leading amp kits on the market and were were impressed not only by the great looks but by the quality of these Rockville installation kits as well. These kits had a lower resistance rating than the other brands we compared and tested them against. You will hear the difference a Rockville installation kit will make!

AudioSavings product experts have tested this amp kit against the leading amp kits on the market. Here are the facts from our testing. The resistance per foot of this kit is extremely low compared to any other amp kit in its range. The other amp kits we tested it against had resistance ratings that indicated they were an 8 gauge amp kit. We were more shocked than anyone about these tests, because we used to sell some of those amp kits. (We now will not sell those any more after learning that they are not up to the quality standards of our installers). The conclusion is that Rockville does a great job manufacturing amp kits while other brands are deceiving consumers.

One other last thing worth noting about our kit compared to others. Our kit cosmetically looks the best. It has blue power wire, clear ground wire, and twisted pair RCAs with matching colors. This model includes (1) set of RCA cables.

Features:

  • Rockville RWK10 10 Gauge 2 Channel Car Amplifier Wiring Installation Kit
  • (1) 17 High Grade Twisted Pair of 100% Copper RCA Cable
  • 17' 10 Gauge Translucent Blue SuperFlex Power Cables
  • 17 18 Gauge Blue Remote Cable
  • 17 16 Gauge Clear Speaker Wire
  • 3' 10 Gauge Clear SuperFlex Ground Wire
  • Gold Plated AGU Heat Resistant Fuse Holder
  • 40 Amp ATU Inline Fuse
  • 7 Split Tube Loom
  • Accessories Included: Wire Ties, Ring Terminals, Butt Connectors, Spades, and Grommets
  • Soft abrasion proof insulating jacket allows for 100% improved flexibility
  • PVC outer jacket can with-stand an extreme temperature range of -40 to 220 degrees F

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Rockville SS8P 400 Watt Slim Under-Seat Powered Car/Truck Subwoofer Sub+Amp Kit Black
Rockville SS8P 400 Watt Slim Under-Seat Powered Car/Truck Subwoofer Sub+Amp Kit Black
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Price$109.95$99.95$74.99$139.95$96.37$109.95
Delivery
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Customer Ratings
Value for money
4.6
3.9
3.6
4.5
3.8
4.4
Sound quality
4.4
3.7
3.4
4.3
3.7
3.7
Bass quality
3.5
3.5
4.3
3.5
4.1
Easy to install
4.6
4.7
3.8
4.5
Sold By
Audiosavings
Audiosavings
southmanage
Audiosavings
Speece, Inc.
Audiosavings
speaker size
2.8 inches
8 inches
8 inches
10 inches
8 inches
10.24 inches
power source
Corded Electric
Corded Electric
Corded Electric
Corded Electric
Corded Electric
connectivity tech
RCA
RCA
RCA
wired
RCA
RCA
speaker type
Subwoofer
Component
Subwoofer, Woofer
Subwoofer
Subwoofer
Subwoofer
mounting type
Car Mount,Truck,Under Seat Mount
Car Mount,Truck,Under Seat Mount
Car Mount,Truck Audio,Under Seat Mount
Car Mount, Truck, Under Seat Mount
Car Mount,Under Seat Mount
Car Mount,Truck,Under Seat Mount
weight
11 pounds
8.69 pounds
4.45 kilograms
12.06 pounds
10.25 pounds
control method
remote
remote
remote
remote

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Rockville SS8P 400 Watt Slim Under-Seat Powered Car/Truck Subwoofer Sub+Amp Kit Black


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Customer reviews

4.5 out of 5 stars
4.5 out of 5
1,406 global ratings

Customers say

Customers like the sound quality, ease of setup, value, fit and quality of the speakers. For example, they mention that it has a great sound, it fits perfectly in the space and that the build quality is top notch.

AI-generated from the text of customer reviews

310 customers mention274 positive36 negative

Customers like the sound quality of the speakers. They say it has a great sound, with plenty of bass for their truck. The independent bass volume knob is great, allowing them to adjust song by song. The bass is rich enough and low enough to be heard, and is a perfect compliment to their stereo. The inexpensive compact unit packs a good punch, and has hammered finish and a nice looking design.

"...A small sub that fits where you need it to and provides a good sound...." Read more

"...it to transform your car into a concert venue but it greatly increase your cars bass...." Read more

"...It's aluminum with a hammered finish and a good looking design that's not too flashy or in-your-face; I'm kinda disappointed I have to hide it under..." Read more

"...In addition, the sound quality is crisp and clear (thus far) with minimal distortion unless the unit is pushed to max volume and/or bass levels...." Read more

161 customers mention150 positive11 negative

Customers find the installation of the speakers to be easy. They mention that the system is essentially plug and play, and the wiring/installation kit was great. Customers also say the instructions are clear enough on connections.

"...Wiring was straightforward...." Read more

"...It fits perfect, I installed it in one night and felt like it was pretty simple...." Read more

"...It was relatively straightforward to install, all you will need to buy is a few things to get it done right...." Read more

"...It was easy to install and sounds amazing for the price point. Would definitely buy again if I have another application." Read more

150 customers mention146 positive4 negative

Customers appreciate the value of the speakers. They say it's a great product for the money, perfect for a budget conscious person, and has good features for the admission price. Customers also say it sounds amazing for the price point and is a good addition for getting some low end that is missing from an OEM system.

"This little sub sounds absolutely fantastic for the size and low price. I couldn't be more pleased with it!..." Read more

"...Overall I’m very happy with the cost, value, size and sound!" Read more

"Great value for the money. Don’t expect it to transform your car into a concert venue but it greatly increase your cars bass...." Read more

"...It was easy to install and sounds amazing for the price point. Would definitely buy again if I have another application." Read more

130 customers mention115 positive15 negative

Customers like the fit of the speakers. For example, they say it fits perfectly in the space, takes up no space, and allows them to install it in very tight areas.

"...It fits perfect, I installed it in one night and felt like it was pretty simple...." Read more

"...Appropriately length wires, and connectors. The size really does fit under pretty much any car, as mine is a tiny Hyundai." Read more

"...The fit and finish of the device is excellent...." Read more

"...It fit perfectly. After installing and some tuning, this thing sounds amazing for the small size...." Read more

128 customers mention109 positive19 negative

Customers like the quality of the speakers. They mention that the build quality is top notch, the unit is far more sturdy than expected, and the wire kit was good quality. The high quality enclosure made of metal is a great addition for some extra base, and it fills in the gaps perfectly.

"...it will not rattle your teeth out, but it does provide a nice addition to the lower end...." Read more

"...However, the included cables are awesome. They have a nice thick PVC insulation yet they're super flexible, even the thick 8-gauge power wires..." Read more

"...Really felt like a quality product. I installed this onto my 2015 smart car fortwo with the base two speaker system...." Read more

"nice product" Read more

22 customers mention22 positive0 negative

Customers like the adjustability of the speakers. They say the adjustable gain input knob is great to set base to different songs, and having a way to adjust the subwoofer separately is another nice feature. The bass adjuster is very handy, and allows you to adjust song by song. Customers also appreciate the remote adjusting module, which is helpful to route to the dash so you don't have to keep adjusting. The remote bass booster control is awesome, and it allows for easy adjustments.

"...you can either mount them all in a visible location, making it easy to adjust the sub, but also making it a bit uglier since the wires will also be..." Read more

"...I’m shocked what a great product for the money. The remote is fantastic. I hope the entire unit lasts. I will update in a few months." Read more

"...-Subwoofer gain level remote knob is helpful to route to the dash so you don’t have to keep adjusting the gain on the subwoofer itself...." Read more

"...Pros. Adjustable bass settings and bass knob is optionalCons. From outside of the car no one will bat an eye at you at full volume...." Read more

96 customers mention65 positive31 negative

Customers are mixed about the performance of the speakers. Some mention that they were surprised at how well it performed, and that it does a heck of a job. They say it adds an excellent base sound, and is very capable. However, others say that it's not very powerful, and the power keeps cutting out.

"...However, the sub works perfectly fine without the remote...." Read more

"...Once I had everything hooked and turned it on it was literally amazing...." Read more

"...The setup sounded as you'd expect... not great, even with the built-in13-band eq tweaked as good as I could get it. Bass response was lousy...." Read more

"...All in all the sub is a great a value for the price and works very well in my wrangler (non-alpine install)...." Read more

32 customers mention20 positive12 negative

Customers are mixed about the wiring of the speakers. Some mention that everything they need is included, while others say that it was missing.

"...However, the included cables are awesome...." Read more

"...The sub is 5 stars, amp kit is 3 for the cheap/missing connectors and flimsy wire. Can't beat the price for the combo though." Read more

"...It was a great package with the wiring kit. Easy to setup and install. I’m shocked what a great product for the money. The remote is fantastic...." Read more

"...Add the installation kit, it came with everything I needed." Read more

Performs pretty good for the price-2015 smart car fortwo
4 Stars
Performs pretty good for the price-2015 smart car fortwo
I ordered the 8" ss8p with the wiring kit since it would come all at once. However I only received the speaker. A few days later, I got the wiring kit separate. Installed the speaker the day I got it after a quick run to get a wiring kit. Kinda sucked but nothing too crazy.Upon first inspection, the speaker felt robust in build quality and dense. Really felt like a quality product. I installed this onto my 2015 smart car fortwo with the base two speaker system. The two speakers had sounded horrible and broke so I put in some aftermarket pioneer 6.5" full range speakers and they sounded much more full and clear. However, the bass was lacking incredibly. In addition, the smart car has tons of engine bass and vibrations that any bass I could hear while stationary with the door speakers got drowned out with road noise and such. So I decided to get this small compact sub to slide behind the drivers seat. It fit perfectly. After installing and some tuning, this thing sounds amazing for the small size. Sure it won't blow you away of shake mirrors too much, but it is exponentially better than what door speakers and produce. I must say however, that it isn't all perfect.Some things I noticed was that the bass knob that comes with it is basically useless at high volume. And that brings me to my other point, this sub no longer increases in power after a certain volume. Assuming I've got the gain up high and the bass knob at like halfway, once I turn up my headunit over 22 volume, the door speakers begin to get louder than the bass. My door speakers begin to distort at around 26 volume so basically there's a sweet spot for this sub.Also, keep this thing well ventilated. I've got a small car with the engine right behind me and a relatively weak ac system. Pair that with 100 degree days and some music and this thing WILL get hot. I've got it behind my seat in an area where ventilation is pretty bad so I understand, but its gone into protection mode two or three times already. Though it's only done that when I've idled for like 20 mins listening to music. If this is under a seat beside an air vent you'll have no shutting-off issues like I did.I guess it's a pretty great package for like 110 dollars. If your car has no low end, this will most definitely be an improvement. Think of this as a slightly better premium factory bose system level of bass in a car. It's there for sure, but its not two 12". Perfect for me though.
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Top reviews from the United States

Reviewed in the United States on July 16, 2021
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5.0 out of 5 stars Great little sub!
Reviewed in the United States on July 16, 2021
This little sub sounds absolutely fantastic for the size and low price. I couldn't be more pleased with it!

I installed it in an '88 Toyota pickup Xtra Cab that had an existing low-end JVC head unit running four equally cheap speakers. The setup sounded as you'd expect... not great, even with the built-in13-band eq tweaked as good as I could get it. Bass response was lousy. One huge issue with the setup was a horrible ~150 Hz resonance in the cavities in the back of the cab where the rear 6.5" speakers were installed. I cut that frequency in the eq, which helped tremendously, but the problem remained. I thought about installing some baffles and acoustic mat in there, but figured I'd get the sub in first and see if I could fix it with proper crossover settings. One benefit of small subs is that they can reproduce higher frequencies than larger subs. So I was hopeful I could crank up the sub's LPF and let it handle that troublesome 150 Hz, and set the HPF on the rear speakers above it.

I'd planned to install the sub under one of the seats, but protrusions in the floorboard on both sides prevented that. I ended up installing it on the floor behind the driver's seat, close to the back wall of the cab. Wiring was straightforward. I removed the seats to make things easier, and allow me to lift the carpet in order to run the cable for the remote to the center console.

I ran the wiring and connected it to the sub outputs on the head unit. It powered right up with the head unit and started thumping with the music! After adjusting the crossovers and eq on the head unit, and tweaking the adjustments on the sub, the system sounded absolutely amazing. I ended up turning the LPF on the sub to its maximum setting, and set the HPF on the rear speakers equally high. The annoying resonance was completely eliminated!

I tested the system with several different types of music, including hard rock with tight kick drums, and rap with super-low bass lines, and was just thrilled across the board with the performance of this little, unobtrusive sub.

10/10, would buy again! In fact, I'm about to take some measurements on my '86 Buick Grand National, and if it will fit under the seat, I'm gonna grab another one!
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Reviewed in the United States on June 21, 2022
8 people found this helpful
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Reviewed in the United States on March 17, 2024
Reviewed in the United States on March 1, 2024
Reviewed in the United States on August 20, 2019
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5.0 out of 5 stars Great Boost to Sound Quality
Reviewed in the United States on August 20, 2019
This is an excellent subwoofer for anyone looking to add bass to their system inexpensively.

The fit and finish of the device is excellent. It's aluminum with a hammered finish and a good looking design that's not too flashy or in-your-face; I'm kinda disappointed I have to hide it under the seat.

Wiring it up wasn't bad, but could be better. I used the RCA cables to connect it to the Sub output on my head unit, and the power connectors come from an 8-pin connector (which is also where you'll find the high-level inputs). You're supposed to somehow connect the thich 8-gauge wire to two smaller wires on the 8-pin, which isn't super easy, especially if you don't have a powerful soldering iron. However, the included cables are awesome. They have a nice thick PVC insulation yet they're super flexible, even the thick 8-gauge power wires (I think its 8 ga, not 100% sure tho). To attach it to the car, I just drilled holes through the floor and screwed it in place. The included screws were a bit short, so I had to use longer ones I had lying around. If you drill through metal, make sure to paint it or something (especially if its exposed to the elements) otherwise it'll rust.

Once its wired up, it sounds awesome. bass is crisp but quite strong. I like the bass to be a bit heavy and this speaker totally delivers. If you're looking for something that rattles your license plate and can be heard from outside your car, this isn't it, but if you want to add a pretty good amount of bass, I highly recommend it.

It also comes with a little bass level remote control, which I highly suggest you install. some songs sound better without so much bass IMO, so it works great to easily adjust the amount of bass according to the song. It does have one of thouse ultra bright annoying blue LEDs tho, so keep than in mind when mounting it. However, the sub works perfectly fine without the remote.

The only real downside is that both the connectors and the adjustment knobs are on the same side, so you can either mount them all in a visible location, making it easy to adjust the sub, but also making it a bit uglier since the wires will also be visible, or you can hide the connectors for a cleaner look, but adjusting anything will be a pain (I have to go from the front of the seat with a tiny screwdriver and adjust everything by feel).
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