Product: Rockville RVW1800P4 1800w Raw DJ Subwoofer 4 Ohm Sub Woofer 107OZ Magnet, 18"
Brand: Rockville
1800 Watt 18“ Raw DJ 4 Ohm Subwoofer. 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 . Frequency Response : 20 Hz to 500 Hz. Sensitivity : 105dB @ 1w/1m
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 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.

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