Woofersetc.com your online car audio superstore
Woofersetc.com your online car audio superstore



Brand New!


818F-D1 - DD Audio Digital Designs 18" Dual 1-Ohm 7500W Subwoofer


 Features & Specifications:

    • General Features:

      • The 800 Series latest revision is a mean mother “f”. In the previous “e” revision they got bigger and better; and in this latest “f” revision they receive precision engineered, thermal cooling enhancements of major significance along with some design work that is literally cutting edge. DD is pushing the already highly efficient 800 subwoofers to meet our evolving performance standards to ensure longer periods of loud, continuous play.

        The DD design philosophy is to prioritize the maximization of total efficiency: converting raw power to clean sound, while managing the intense heat created by this conversion. Given this mandate, the new 800 “f” revision receives a vented aluminum voice coil insert and vented, finned, aluminum heatsink to conduct and transfer heat away from the subwoofer’s most vulnerable components. As the increased power handling will undoubtedly bring with it greater demand for excursion, a taller surround, double stitched to a fiberglass loaded, non-pressed cone, adjoined to a voice coil featuring increased winding length with DD’s proven double layer spider, offers increased Xmax and elegant styling. The heat sink features beautifully carved, polished aluminum DD logos, and the motor is wrapped in a rubber boot with an all new embossed design.

      • Speaker Size (In): 18
        Watts RMS: 2500
        Watts Peak: 7500
        Impedance: D1 / D2
        VCD (In): 4
        Piston Diameter (In): 15.75
        Fs (Hz): 27
        Qms: 7.049
        Qes: 0.8896
        Qts: 0.7899
        Vas (Liters): 155.3
        Xmech (MM): 100
        Xmax (MM): 31
        Frame OD (In): 18.25
        Frame OD w/Gasket (In): 18.5
        Mounting Diameter (In): 16.415
        Mounting Depth (In): 12.5
        Motor Diameter (In): 9.45
        Motor Depth (In): 5.8
        Ported Enclosure (CuFt): 5.0 - 7.0


Shipping Policy:

Domestic:

Please note that Free Shipping is within the continental US only. Free ground shipping does not apply to Alaska, Hawaii, APO/FPO military addresses and any US territories, including Puerto Rico, Guam, US Virgin Islands, Northern Mariana Islands and American Samoa.

Please contact us to inquire about the shipping cost to these locations.


International:

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 (1) One Year Warranty, and can be returned for a period of (1) one year for warranty service. If you have purchased a product from us within the last one (1) year, 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.








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