2 D4 - Sundown Audio 15 1000W Dual 4-Ohm SA Series Subwoofer. Sealed Enclosure: 2.0 ft^3. Ported Enclosure: 3.5 ft^3 tuned to 35 Hz (F3 of 28 Hz). 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 "SUNDOWN AUDIO SA-15 V. 2 D4 15 1000W RMS DUAL 4-OHM SUBWOOFER BASS SPEAKER NEW" is in sale since Friday, August 6, 2010. This item is in the category "Consumer Electronics\Vehicle Electronics & GPS\Other Vehicle Electronics". The seller is "woofersetc_outlet" and is located in Los Angeles, California. This item can be shipped worldwide.