• (1) Alpine X-W12D4 12" 900 Watt RMS Car Audio Subwoofer DVC Dual-4ohm X-Series Sub
• (1) Rockville dB14 4000 Watt Peak/1000 Watt Dyno-Certified RMS Mono 2 Ohm Amplifier Car Audio Amp
• (1) Rockville RWK41 4 Gauge Complete Car Amp Wiring Installation Wire Kit with RCA's

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"

Owner's Manual

Video of RWK41:

Unboxing Video for RWK41:

Description:

The Rockville RWK41 4 AWG (American Wire Gauge) amp kit has the following differences over other amp kits on the market at this price point.

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. Since Rockville wires are made with around 3 times as much copper as any other wire at this price point, these wires had a much better resistance rating which means they will transfer more power to your amps than the other brands.

3. We do not cheat you on the thickness of the wire. These are standard American wire gauge thickness. This is another reason our conductivity is better than anything else at this price point. Other brands in the market place write 4 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.

This kit also includes a massive 60 Amp AGU Gold Plated Fuse, so you can be sure it will handle the all the DC power that your amp will need without even the slightest loss of current. 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. What this means is that Rockville manufactures their kits with more copper than other kits at this price point, ultimately providing your amplifiers with better and cleaner DC power, so they work cooler and more efficiently. You will hear the difference a Rockville installation kit will make!

Features:

• 1 – 17’ High Grade Twisted Pair of 100% Copper RCA Cable
• 17’ – 4 Gauge Translucent Blue SuperFlex Power Cables
• 17’ – 18 Gauge Blue Remote Cable
• 17’ – 16 Gauge Clear Speaker Wire
• 3’ – 4 Gauge Clear SuperFlex Ground Wire
• Gold Plated AGU Heat Resistant Fuse Holder
• 60 Amp AGU Gold Plated Fuse
• 7’ Split Tube Loom
• Accessories Included: Wire Ties, Ring Terminals, Butt Connectors, Spades, and Grommets