<p><strong>Package Includes:</strong></p> <ul> (2) Alpine R2-W8D4 8” R-Series 350W RMS Subwoofer Dual 4 Ohm Car Audio Sub R2W8D4</li> (1) Rockville RXD-M2 3000 Watt Peak/750w RMS Mono 1 Ohm Amplifier Car Audio Amp</li> (1) Rockville RWK41 4 Gauge Complete Car Amp Wiring Installation Wire Kit with RCA's</li> (1) Rockville RQB8 Dual 8" Vented Subwoofer Sub Box Enclosure Finished w/Bed Liner</li> (1) Dual Sub Box Enclosure Installation Kit: Speaker Wire, Screws, Spade Terminals</li> </ul> </p> <p><strong>Features of R2-W8D4:</strong></p> <ul> <li><strong>New Motor Structure</strong><br> The new R-Series subwoofers now feature larger, double-stacked magnets that contribute more motor force for deeper bass and tighter bass control compared to the previous generation.</li> <li><strong>Oversized Dust Cap</strong><br> The new hybrid poly ceramic composite dust cap ensures rigidity while also providing incredible internal damping (vibration absorption) to smooth out the bass response and reproduce tight bass.</li> <li><strong>Increased Accuracy<br></strong> Alpine's High Amplitude Multi-Roll (HAMR) Surround Technology allows the cone to efficiently move air while staying cool resulting in incredible accuracy from the subwoofer.</li> </ul> <p><strong>Specifications:</strong></p> <ul> <li>Size: 8"</li> <li>Dimensions: 7.64" x 7.64" x 4.56"</li> <li>Frequency Response: 30Hz - 200Hz</li> <li>Power Range: 150W - 350W RMS</li> <li>Power Handling: 350W RMS / 1000W Peak</li> <li>Magnet Weight: 56 oz</li> <li>Voice Coil Diameter: 40 mm (2.6")</li> </ul> </ul> </ul> </ul> </ul> </p> <p><strong>Features of RXD-M2:</strong></p> <ul> <li> Dyno Certified RMS Power Ratings: (Certified Dyno Test / Less than 1 % THD) (Use these ratings when comparing with top brands such as Kicker, Rockford Fosgate, etc)<br> <ul> <li>1 Ohm: 750 Watts x 1 Channel &lt;1% THD+N</li> <li>2 Ohm: 550 Watts x 1 Channel &lt;1% THD+N</li> <li>4 Ohm: 400 Watts x 1 Channel &lt;1% THD+N)</li> </ul> </li> <li> Peak: (Use these ratings when comparing with the top budget brands such as Boss, Power Acoustik, etc)<br> <ul> <li>1 Ohm: 3000 Watts x 1 Channel</li> <li>2 Ohm: 2200 Watts x 1 Channel</li> <li>4 Ohm: 1600 Watts x 1 Channel</li> </ul> </li> <li>High-Speed MOSFET Power Supply</li> <li>Optical Coupler Class "D" Technology</li> <li>Studio-Grade Bipolar Output Stage Transistors</li> <li>Fully Adjustable 12dB / Octave Crossover with Differential Circuitry</li> <li>Low Pass Filter: 50Hz - 250Hz</li> <li>Subsonic Filter: 15Hz - 55Hz</li> <li>Phase Control Switch</li> <li>Full IC-Controlled Protection Circuitry</li> <li>Remote Dashboard Subwoofer Control</li> <li>Fully Adjustable 12dB Bass Equalizer</li> <li>Mute and Delay Soft Start System</li> <li>RCA Preamp Line Output</li> <li>8 Volt Preamp Circuitry</li> <li>Status Mode LED Indicator</li> </p> </ul> <p><strong>Features of RWK41:</strong></p> <ul> <li>1 - 17' High Grade Twisted Pair of 100% Copper RCA Cable</li> <li>17' - 4 Gauge Translucent Blue SuperFlex Power Cables</li> <li>17' - 18 Gauge Blu