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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Description

🎶 Elevate your drive with bass that commands attention—under-seat power, over-the-top impact!

COOL RELIABLE - Cast aluminum enclosure ensures your subwoofer stays cool under pressure, delivering consistent bass without overheating.
SLIM POWERHOUSE - 400W peak power in a sleek 2.8" slim design fits discreetly under your seat for that clean, professional look.
BUILT TO PROTECT - Thermal, short, and overload protection circuits with LED indicators keep your system safe and performing at its best.
CUSTOM BASS CONTROL - Adjustable input sensitivity, bass boost up to 12dB, and phase switch let you tailor your sound to perfection.
PLUG PLAY PRECISION - Includes premium 10-gauge amp installation kit with 100% copper wiring and gold-plated fuse holder for flawless connectivity.

The Rockville SS8P is a slim, 8" powered subwoofer delivering 400W peak and 100W RMS, designed to fit discreetly under car or truck seats. Featuring a cast aluminum enclosure for superior cooling, PWM MOSFET power supply, and advanced protection circuits, it ensures powerful, reliable bass. The package includes a premium 10-gauge amp installation kit with 100% copper wiring and gold-plated fuse holder, making installation seamless and professional-grade.

Specifications

Is Electric	Yes
Power Source	12-volt DC electrical system
Speaker Maximum Output Power	400 Watts
Subwoofer Connectivity Technology	Wired
Connectivity Technology	RCA
Audio Driver Size	8 Inches
Number Of Circuits	1
Audio Driver Type	Dynamic Driver
Item Weight	11 Pounds
Item Dimensions D x W x H	11"D x 14.1"W x 5.4"H
Unit Count	1 Count
Impedance	2 Ohm
Signal-to-Noise Ratio	9E+1 dB
Number of Audio Channels	2.0
Compatible with Vehicle Type	Car, Truck
Compatible Devices	Smartphone, Tablet, MP3 Player, Desktop, Television, Projector, Laptop
Speaker Size	8 Inches
Woofer Diameter	8 Inches
Water Resistance Level	Not Water Resistant
MP3 player	No
Processor Count	1
Specific Uses For Product	Under-seat installation in cars or trucks
Controller Type	Remote Control
Color	Black
Is Waterproof	FALSE
Control Method	Remote
Audio Output Mode	Mono
Mounting Type	Under-Seat Mount
Material Type	Aluminum
Speaker Type	Subwoofer
Additional Features	Protection
Recommended Uses For Product	Car
Subwoofer Diameter	8 Inches

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