Package Includes:

• (1) Alpine X-W12D4 12" 900 Watt RMS Car Audio Subwoofer DVC Dual-4ohm X-Series Sub
• (1) Rockville RS12 Single 12" 1.0 cu.ft. 3/4" MDF Sealed Subwoofer Enclosure Box
• (1) Alpine X-A90M 900 Watt Mono X-Series Car Audio Amplifier Class-D Amp
• (1) Rockville RWK4CU 4 AWG Gauge 100% Copper Complete Amp Installation Wire Kit OFC
• 10 Drywall Wood Screws (Wood screws are the type of screws; the screws are actually made of metal)
• 12 Feet of 14 AWG Blue Speaker Wire
• 2 Spade Terminals

Description of X-W12D4:

OVERVIEW
The New X-Series subwoofers were developed from a sound philosophy we call Alpine ID – a focus on highly accurate components built for superior imaging. A triple stacked magnet surrounds an extended voice coil which allows a very long excursion resulting in huge air movement.

A specialized CRC pole with integrated cooling fins and an aluminum shorting cap reduce the lag of coil’s alternating movement while also providing cooling within the motor. The cone structure is suspended by two spiders and our patented H.A.M.R. surround.

The stability of the dual-spider along with the even unfolding of the multi-roll surround create incredibly linear cone travel, free of any unneeded movement that cause distortion.The powerful and efficient motor coupled with its highly-controlled suspension give the X-Series subwoofer the ability to create loud and accurate bass in a very small, sealed box.

Only requiring 1 cubic foot of air space (.55 for the 10"), the 12" X-Series subwoofer can reproduce frequencies down to 40 Hz before rolling off, leaving you with bass that digs deep and plenty of trunk space.

The new X-Series subwoofers are the X-W12D4 12-inch Dual 4 Ohm and the X-W10D4 10-inch Dual 4 Ohm.

CRITICAL EVALUATION OF IN-CAR SOUND
Alpine’s top engineers from all over the world gathered in Alpine headquarters to deeply research and evaluate sound systems from both the aftermarket and high-end OE manufacturers. Many systems today have incredible dynamic range and reach sufficient volume levels, but lacked the reality of instruments and spatial imaging.

As a result, Alpine ID was born, a sound philosophy that continues to inspire us to create a new level of sonic performance.

ALPINE: IMAGE DEFINED
Or Alpine ID for short, is the new Alpine global sound culture with an evolutionary approach for solving what’s missing in most car audio systems these days: great spatial imaging and depth of sound stage. It centers on developing matched sound systems with core components that work together to achieve greater realism in the sound stage while maintaining great dynamic range and accuracy.

BUILT TO MOVE TONS OF AIR
The 24mm Xmax is best in class and allows close to 2 inches of full cone motion. In order to create a powerful yet accurate subwoofer, we had to implement several technologies that keep the cone under control. Dual spiders ensure a rigid moving assembly while the HAMR surround provides long linear travel.

A shorting ring keeps the THD down while a custom heat sink integrated CRC pole and shorting cap keeps high magnetic force. These design aspects come together to produce incredibly precise, powerful bass.

EASY GRILLE AND TRIM RING INCLUDED
Taking design cues from tweeter development, we’re incorporating a twist-lock trim ring which allows easy attachment of the included metal mesh grill. With a simple twist, the trim ring locks into place, concealing the mounting screws and locking the optional grille into place. The trim can be installed with or without the grille.

THE PERFECT PAIR PERFECT POWER MATCHING
The X-Series amplifier, X-A90M, is the perfect amplifier for the job. Along with the 900w power matched specifications of both components, each were built under the same sound philosophy, Alpine ID. With a focus on musicality and sound imaging, the X-W12D4 is complimented by the amplifiers clean, low distortion output and >1500 damping factor.

Add the X-Series speaker to the system and prepare to experience a new level of in-car imaging.

Features:

• ALPINE X-W12D4 12" 900 Watt RMS Car Audio Subwoofer DVC Dual-4ohm X-Series Sub
• Alpine ID Sound Quality
• 900W RMS, making it a perfect match for the X-Series X-A90M 900W mono amplifier
• 24mm linear Xmax (1 way), 48 mm peak to peak
• Dual spiders for precision control over the large dynamic range
• Dual shorting rings for strong motor control ensuring low THD and tight bass
• Center pole radial heat sink which wicks heat away from the voice coil and transfers it outside the motor, for long term high output
• The biggest HAMR surround yet, for linear cone movement throughout its large range of excursion
• Light but rigid pulp/mica cone which allows for highly accurate bass with great natural tone
• Twist-lock Trim ring with full mesh grill included
• Frequency Response: 22Hz-200Hz
• Mounting Depth: 7 1/4"
• Cutout Diameter: 11 1/16"

Sealed Box Range:

Recommended Sealed Box

• Net Internal Volume: 0.4-1.25 Cu Ft.
• Extenal Dimensions (H x W x D): 14" x 14" x 12.25"
• Gross Internal volume: 0.97 Cu Ft.
• Net Internal Volume: 0.85 Cu Ft.
• , Qtc: 36Hz, 0.99

Vented Box Range:

• Net Internal Volume: 1.0-2.0 Cu Ft.
• Fb. Tuning: 30-36 Hz

Recommended Vented Box:

• External Dimensiions (H x W x D): 14" x 23.5" x 14"
• Gross Internal Volume: 1.98 Cu Ft.
• Vent Area (W x H): 15.0 in2 (3.75" x 4")
• Vent Length: 18"
• Vent Displacement: 0.21 Cu Ft.
• Net Internal Volume (Vb): 1.65 Cu Ft.
• Cu ft., ripple, Fb: 28Hz, 5.67B, 33Hz

Owner's Manual

Description of X-A90M:

Hear and feel the music like you never have before with X-Series Amplifiers.

CRITICAL EVALUATION OF IN-CAR SOUND
Alpine’s top engineers from all over the world gathered in Alpine headquarters to deeply research and evaluate sound systems from both the aftermarket and high-end OE manufacturers. Many systems today have incredible dynamic range and reach sufficient volume levels, but lacked the reality of instruments and spatial imaging. As a result, Alpine ID was born, a sound philosophy that continues to inspire us to create a new level of sonic performance.

ALPINE: IMAGE DEFINED
Or Alpine ID for short, is the new Alpine global sound culture with an evolutionary approach for solving what’s missing in most car audio systems these days: great spatial imaging and depth of sound stage. It centers on developing matched sound systems with core components that work together to achieve greater realism in the sound stage while maintaining great dynamic range and accuracy.

KEEPING THE HEAT DOWN WHILE FAITHFULLY REPRODUCING MUSIC
At the core of the X-Series Amplifier’s chassis is a solid cast aluminum heat sink which keeps the amplifier cool when performing at its peak power levels. Excess heat is removed from the amplifier through the newly designed heat sink profile which both improves airflow and increases surface cooling area. The fan-less channels located on both sides of the amp allow for convection flow of air; hot air naturally rises out from the top of the amplifier, which causes a vacuum that sucks in cool air from below. This smart design allows for continuous thermal control for an uninterrupted listening experience.

PROVEN POWER
X-Series Amplifiers come with their very own birth sheet which reveals each amplifier’s true power rating.

HIGH PERFORMANCE WHILE RETAINING CLASS-LEADING POWER DENSITY
X-Series amplifiers are built on a new Alpine-proprietary circuit design that achieves class-leading power density and reliability while performing at the top of its class. By simplifying the circuit topology, Alpine is able to ensure the cleanest possible signal path. While the simplicity of the circuit contributes to a great sounding signal, we added an exclusive dual feedback loop that corrects signal distortion. This clever design results in a frequency response that not only meets the Hi-Rez audio standard of 40kHz but even extends up to 60kHz. The amp maintains a very low phase shift throughout the music spectrum which allows your music stay faithful to the original recording with realism that puts you in the center of the performance.
X-A90M

Features:

Video of RWK4CU:

We challenge anyone to put this wire to a resistance test against any other wire on the market with the same gauge. If our cable does not meet or exceed any other cable, even if it costs 3 times more, we will be happy to call tag the item and refund you in full. Why are we so confident ? This cable is 100% copper. You cant have a cable with more than 100 % copper. So the only way a cable would out-perform this one is if it were being advertised as a 4 AWG but they are giving you more wire than advertised. No brands selling 100 % copper cables actually do this.

We guarantee that this kit will compete with the most expensive amp kits on the market from Kicker, JL Audio, or any other top brands.

Maximum Power!
Looking for a wire kit that has 100% true specifications! A wire kit that uses 100% copper 4-gauge cable! Then look no further than the Rockville True-Spec RWK4-CU 4 Gauge Amplifier Wiring Installation Kit. This package includes everything you'll need to get your amplifier system powered-up correctly and at peak efficiency. All items included in this kit are top of the line.

The power and ground cables aptly named “Mega Power Cable" is a no compromise power cable. Rockville’s engineering team over-built and designed the cables using thousands of strands of only true 100% oxygen-free, silver-tinned copper strands. The use of a proprietary special twisting process reduces “surface skin impedance loss" so that Mega Power cables have zero signal and power loss, delivering full power from your battery system to your amplifier even at lengths of 20 feet! The increased current flow and higher amperage carrying capacity will increase your amplifiers efficiency and keep your amplifier running cooler. The SuperFlex outer insulating jacket jacket makes installation and cable routing simple and easy. The 100% copper stranded wire is extremely tolerant of the hostile conditions found under the hood in vehicles and compensates for vibration, heat expansion and flexibility. This flexible and well-shielded wire is crucial for getting through all of the nooks and passageways within the confines of a vehicle interior.

Some manufactures use all aluminum or mix a little copper with aluminum to give their cables the appearance of a “heavy-duty" cable. But not Rockville, our True-Spec 100% oxygen free, silver tinned copper eliminates corrosion, increases current transfer x 10, and won’t discolor over time.

The superior quality and materials of the Rockville 100% True-Spec amplifier installation kit is realized in the included accessories and cable workmanship. Included is a precision CNC cut full size ANL fuse housing, machined from solid brass and then 14K gold plated for superior signal transfer and complete with a matching gold plated 120-amp ANL fuse. The power cable is wrapped in 6 feet of durable nylon braided tubing to protect it from heat and chafing in the engine compartment. All installation accessories such as the ring terminals and spade connectors are nickel plated for superior signal transfer and durability.

CRYSTAL SQ AUDIO PLANAR SPEAKER CABLE
The speaker cable included in the Rockville True-Spec is also manufactured from 100% copper and woven in to a flat planner design and coated in our Super-Flex insulation so that it fits under and around your vehicles trim and carpet smoothly and without bulking up. With crystal clear sound quality these speaker cables deliver true audio fidelity from your car audio amplifier to your speakers. The 14-gauge speaker cable included in the 4-gauge kit can handle over 2000 watts of power without heating up or degrading signal quality.

CRYSTAL SQ RCA AUDIO INTERCONNECT CABLE
Designed and engineered to be the best sounding, best performing and best looking RCA cables available today. Each channel in the RCA cable is triple shielded first with dielectric internal insulators and then with a 98% coverage woven shield. All cables are manufactured of 100% oxygen free copper and feature twisted pair technology for superior noise rejection and pure sonic signal flow. The RCA plugs are shielded metal and feature a spiral cut outer ground ring with center split pin for precise and tight audio connections. The result of all this technology is noise free-noise rejection signal transfer for optimum sound quality. You will hear the difference these RCA signal transfer cables will make.

• Rockville RWK4CU 4 Gauge 2 Channel Complete Car Amplifier Installation Kit 100% Pure Copper RCA Cables
  
• 4 Gauge Power Amplifier Installation Kit
• Designed specifically for car audio systems over 1000 watts RMS to 2000 Watts
• Made from silver-tinned 100% virgin copper for a pure uninterrupted transfer of power and signal
• The solid brass gold plated Mini ANL Fuse Holder offers ideal protection for high powered systems
• Strand Count: 1862
• BC-5W2 Compliant

• 17 ft. Frosted Blue 4 gauge power wire with seamless crimp ring terminal
• 3 ft. Frosted Gray 4 gauge ground wire
• 17 ft. Blue 18 gauge remote lead wire
• 25 ft. Frosted Clear/Blue 14 gauge flat speaker wire
• 17 ft. Triple shielded twisted pair RCA cables
• One Mini ANL Fuse Holder with 120 amp ANL fuse
• One 1/2“ black rubber firewall grommet
• One 4 gauge spade terminal
• Two black 12 gauge nickel-plated spade lugs
• Three blue 12 gauge nickel-plated spade lugs
• One black 4 gauge ring terminal
• Ten 6" black zip ties

Complete Single Subwoofer Enclosure Installation Kit!

Includes:

• 10 Drywall Wood Screws (Wood screws are the type of screws; the screws are actually made of metal)
• 12 Feet of 14 AWG Blue Speaker Wire
• 2 Spade Terminals

This accessory package includes everything you need to install one subwoofer into an enclosure, and wire to connect the enclosure to your amplifier. This package is a top of the line accessory package which we put together and tested.

The drywall wood screws were hand selected by our installation experts because they drill into the enclosure very cleanly, without chipping the enclosure. The speaker wire is 14 gauge. This is way better than using 16 gauge. You can be 100 % sure that your enclosure will have a clean signal to the amplifier with this top of the line speaker wire. These spade terminals have also been hand selected by our installation experts to make the internal wiring simple, secure, and to run the audio signal cleanly.