R-W10D4 - Alpine 10 750W RMS Dual 4-Ohm R-Series Subwoofer. 10 subwoofer with dual 4-ohm voice coils. Kevlar reinforced pulp cone with HAMR Santoprene rubber surround. You will be issued a Return Authorization Number. In order to maintain an inventory of 100%, Brand New, A-Stock, untouched products, all sales are final. We ask that you please be sure you are ordering the correct product. The item "ALPINE R-W10D4 10 2250W WOOFER DUAL 4-OHM REINFORCED SUBWOOFER BASS SPEAKER NEW" is in sale since Friday, February 12, 2021. This item is in the category "Consumer Electronics\Vehicle Electronics & GPS\Car Audio\Car Subwoofers". The seller is "woofersetc_outlet" and is located in Los Angeles, California. This item can be shipped worldwide.