RVW1800P4

Unboxing of RVW1800P4: How to set up your Rockville Replacement Woofer : Video of RVW RAW WOOFERS: Description: Designed for high power applications in PA speaker mains, DJ touring speakers, sub-woofers and bass guitar systems the new Rockville Bass Rider Subwoofers are a milestone in high-power subwoofer design. The 18” woofers have an incredible power handling of 900 watts RMS/1800 watts peak. These “extra-long throw” woofers can reach amazing sound pressure levels of 105dB with clean, deep bass down to 20Hz that will rattle the walls of any venue! Utilizing a new propriety mix of materials; the cones are Kevlar®-impregnated making them stronger and tougher than your average pro audio woofer cone. A newly designed “treated asymmetrical-W shape surround” provides for superior excursion and linear motion control. The speaker connection terminals are high quality nickel-plated screw style terminals and accept large gauge wire. The terminals are attached to large diameter, high current tinsel leads with silver solder to withstand high current and high temperatures during long excursions. The Rockville Bass Rider woofers’ voice coil use a specially formulated, polyimide-insulated, high temperature wire, designed especially for high SPL response. The winding is bonded onto an incredibly durable and heat resistant aluminum composite former. The voice coil winding length is an incredible 1”, which is 80% longer than most standard pro woofers voice coils. The long coil dissipates heat over a larger area and the increased length drives the cone to higher excursions. The coil is layered with a tough thermoset clear epoxy for added durability, abrasion and heat resistance. The voice coil assembly is bonded to the cone’s “double, linear-progressive Nomex spider”, using a thermoset epoxy adhesive. The spider and surround are bonded to the frame with a high strength cyanoacrylate adhesive, which is also used to bond the dust cap to the cone. The magnet motor structure is all new, and designed with a back plate and pole piece which are forged from a single massive block of low carbon steel. Utilizing an extended pole piece beyond the front plate improves magnetic linearity and voice coil cooling. The yoke and washer plates are 10 mm thick for extreme X-max and peak-to-peak excursions. With a narrow gap design and a high “Y” factor strontium magnet, Rockville Bass Rider subwoofers provide 75% more magnetic energy in the voice coil gap than typical pro audio woofers. And while your music might get hot, your woofer will stay cool with a heat pump effect that’s built in via the basket cooling system underneath the spider landing. The continuous flow of air being circulated through the pole piece delivers cool air directly to the voice coil. This integrated cooling system keeps the woofer temperature under control, increasing power handling and of course reliability. The high-tinsel rolled steel frame is tough and rigid which keeps the cone and magnet in perfect linear alignment. In addition the frame has anti-vibration properties so there are no external tones coming through the metal parts in to your music. The result: a pro audio loudspeaker that is truly amazing. High SPL, extreme power handling, powerful and accurate bass output.  Features: Rockville RVW1800P4 1800 Watt 18“ Raw DJ 4 Ohm Subwoofer  Power Rating : Peak Power : 1800 Watts  Power RMS : 900 Watts Kevlar Reinforced Ultra Stiff Paper Composite Cone Pulp Composite Dust Cap Expanded and Rolled Steel Basket Treated Accordion, “Asymmetrical W” Cloth Surround Ultra Saturated, High BL Magnetic Motor Gap 3“ High Temperature 4-Layer CCAW High SPL Voice Coil Linear Progressive Conex Dual Spider System Nickel Plated Banana Plug Terminals Impedance : 4 Ohms 107 oz. Magnet Motor Structure Mounting Depth: 7.36" inches Frequency Response : 20 Hz to 500 Hz Sensitivity : 105dB @ 1w/1m REVC: 3.2 Ohm FO: 31.852 Hz SD: 128.825m M BL: 15: 936 TM QMS: 4.641 QES: 0.390 QTS: 0.360 NO: 3.042% SPLO: 105 dB VAS: 380.079 m M CMS: 161.281 uM/N MMS: 154.805 g MMD: 128.218Kg