is everything in the box needed for Installation?

Yes, with the accompanying Amp Kit. Its complete along with rubber insulation you gave to attach yourself. I would suggest electrical tape, wire strippers, and a pair of terminal/electrical pliers (I apologize if you are already aware.).

Has anyone added a second sub to their system?

Yes. I used RCA splitters and installed two in my Mitsubishi Montero. Sounds amazing and have been going strong for 3 years. I tried to split the remote control using a telephone line splitter but got weird feedback when I tried to do that, so I just went without the remote control.

How difficult is this to install?

It's easy to install if you understand stereo systems and how to run the wires. The hardest part is getting to your stereo. Not sure if you have experience or not installing systems. If you do, its easy.

If I got splitters for both the rca and remote control (telephone jack), can I install one sub under each of the front seat?

Yes. I split my rca signal and installed 2 of the speakers.

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Rockville SS8P 8" Powered Under-Seat Car Subwoofer with RWK10 Amp Kit | 400W Peak / 100W RMS, RCA and High-Level Inputs, Auto Turn-On, Bass Knob, 10 Gauge 100% Copper Wiring, 2-Items

Product ID: 57118801

Details

Audio Output Mode
Mono
Brand
Rockville
Connectivity Technology
RCA
Frequency Response
20 hertz
Speaker Maximum Output Power
400 watts

📏2.8" slim under-seat design

🔊400W peak power

🔌10-gauge copper wiring kit

£187.42

Duties & taxes included

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Sold byAmazon UKDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎶 Elevate your ride’s vibe with deep bass that fits under your seat!

COOL DURABLE BUILD - Cast aluminum enclosure ensures heat dissipation and long-lasting performance on every drive.
PLUG PLAY CONVENIENCE - Complete bundle with ANL fuse holder and easy-to-install components for a hassle-free upgrade.
PRECISION SOUND CONTROL - Adjustable low-pass filter, phase switch, subsonic filter, and bass boost let you tailor your bass experience.
PREMIUM INSTALLATION KIT - Includes 10-gauge SuperFlex power wire and 100% copper RCA cables for clean, distortion-free audio.
POWERFUL BASS MINIMAL SPACE - 400W peak output in a sleek 2.8" enclosure fits discreetly under any car or truck seat.

The Rockville SS8P Bundle delivers a powerful 400-watt peak output from an ultra-slim 8-inch active subwoofer designed to fit under car or truck seats. It includes a premium RWK10 10-gauge amp installation kit with 100% copper RCA cables and an ANL fuse holder, ensuring efficient, distortion-free sound and reliable power delivery. With advanced sound controls and a durable cast aluminum enclosure, this bundle offers a professional-grade audio upgrade that’s compact, customizable, and built to last.

Specifications

ASIN	B079PSSD6N
Additional Features	Protection
Antenna Location	Car
Audio Driver Size	8 inches
Audio Driver Type	Dynamic Driver
Audio Output Mode	Mono
Best Sellers Rank	#15,556 in Electronics ( See Top 100 in Electronics ) #5 in Car Enclosed Subwoofer Systems
Brand	Rockville
Built-In Media	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
Color	Black
Compatible Devices	Smartphone, Tablet, MP3 Player, Desktop, Television, Projector, Laptop
Compatible with Vehicle Type	Car, Truck
Connectivity Protocol	RCA
Connectivity Technology	RCA
Control Method	Remote
Controller Type	Remote Control
Customer Reviews	4.4 4.4 out of 5 stars (1,558)
Enclosure Material	Aluminum
Frequency Response	20 hertz
Impedance	2 ohm
Input Voltage	12 volts
Is Waterproof	FALSE
Item Dimensions D x W x H	11"D x 14.1"W x 5.4"H
Item Weight	11 pounds
Manufacturer	Rockville
Model Name	SS8P
Model Number	SS8P+RWK10
Mounting Type	Under-Seat
Number Of Circuits	1
Number of Audio Channels	2
Number of Items	1
Power Source	12-volt DC electrical system
Processor Count	1
Signal-to-Noise Ratio	90 db
Speaker Maximum Output Power	400 watts
Speaker Size	8 inches
Speaker Type	Subwoofer
Specific Uses For Product	DJ
Subwoofer Connectivity Technology	Wired
Subwoofer Diameter	8 inches
Unit Count	1 Count
Warranty Description	1 Year Manufacturer
Warranty Type	Limited
Wireless Technology	No Wireless Communication Technology
Woofer Diameter	8 inches

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