Brand New!E10D4v3 - Sundown Audio 10" 500W RMS Dual 4-Ohm Subwoofer Features & Specifications: Sundown Audio E-10 D4 v.3 10" 500W RMS Dual 4-Ohm E Series Subwoofer The third version of our acclaimed E series is all new for 2016. Since we introduced the first E series in 2012 we have sought to push the limits of entry-level woofers forward. Typical entry level woofers are highly limited in terms of linear excursion, mechanical ruggedness, and thermal performance - all of these bars have been raised once again for our third generation E series. The new stamped steel frame is also significantly stronger than previous generation E series woofers and features an enhanced Sundown style” high pressure vented spider landing. Working in conjunction with a motor ventilation system based on our SA series & the new, larger voice coil the third generation E series possesses thermal capacity unheard of in this class of subwoofer. Bottom-line; if you are looking for a great subwoofer option and do not want to break the bank the Sundown E-Series woofers are for you and these are the best E series made to date. They are ideal for anyone from beginners to seasoned professionals seeking industry leading performance at a value price point. Product Features: Sundown Audio E-10 D4 v.3 10" 500W RMS Dual 4-Ohm E Series SubwooferPower Handling:RMS = 500 wattsXmax = 14mm one-way by 70% BLVented magnetic gapVented pole piece with optimized geometryBlack Aluminum 2.5" voice coil former for superior heat dissipationHigh Temperature 4-Layer copper voice coil wireSpring Loaded TerminalsStitched-On Mini-XL Tinsel Leads to prevent fatigue and failure Box Recommendations: Sealed: 0.5 cu ftPorted: 1.0 cu ftDisplacement: 0.11 ft^3Cutout Diameter: 8-7/8"Outside Diameter: 10"Depth: 5 5/8"Recommended Tuning: 32hzRecommended Port Area: 16 in^2 DC Resistance (Re) Ω 6.1 Resonance Frequency (Fs) Hz 33.5 Equivalent Volume (Vas) L 18.8 Electrical Q Factor (Qes) 0.43 Mechanical Q Factor (Qms) 4.39 Total Q Factor (Qts) 0.39 Force Factor (BL) NA 23.5 Moving Mass (incl. Air Load) (Mms) g 183.7 Suspension Compliance (Cms) mm/N 0.12 Sensitivity 1w / 1m 84 dB Sealed Enclosure Suggestion cu. ft. 0.5 Ported Enclosure Suggestion cu. ft. 1.0 Displacement cu. ft. 0.11 Depth in 5.625 Outside Diameter in 10 Cutout in 8.875 Recommended Tuning Hz 32 Recommended Port Areasq. in16 International Shipping: Free shipping DOES NOT APPLY to Puerto Rico, Hawaii, Guam, Alaska or any country outside of the United States.Please message us for shipping quotes. Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding/buying. These charges are normally collected by the delivering freight (shipping) company or when you pick the item up – do not confuse them for additional shipping charges. Warranty: Each and every product for sale on ebay.com by woofersetc is covered under a Nine Month Warranty, and can be returned for a period of nine months for warranty service. If you have purchased a product from us within the last nine months, and it is failing to perform as intended by its manufacturer, please email customer service. You will be issued a Return Authorization Number. Returns will not be accepted without a previously issued RA#. 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. Protect Your Product With a Consumer Priority Service Warranty