{"product_id":"dd-audio-6-5-750-watt-rms-dual-2-ohm-vc-high-excursion-subwoofer-1506a-open-box","title":"DD Audio 6.5\" 750 Watt RMS Dual 2-Ohm VC High Excursion Subwoofer 1506A OPEN BOX","description":"\u003cul\u003e\n\u003cli\u003eOPEN BOX In perfect working condition Has been mounted Small scratches Install mark on metal Gasket Minor use damage Box has been opened (see pic #2) Open-box items are not subject to returns. They are sold \"As Is\". All requests for returns will not be accepted.\u003c\/li\u003e\n\u003cli\u003eUSA BUILT PERFORMANCE: Precision engineered and assembled in the USA for unmatched quality\u003c\/li\u003e\n\u003cli\u003eCOMPACT HIGH OUTPUT: Delivers bass that rivals larger subwoofers in a much smaller enclosure\u003c\/li\u003e\n\u003cli\u003eADVANCED COOLING: Multi-vent Free Flow motor with dual-stage aluminum heatsink keeps temps under control\u003c\/li\u003e\n\u003cli\u003eLONG GAP \/ LONG COIL DESIGN: Maximizes control, efficiency, and linear output\u003c\/li\u003e\n\u003cli\u003eHIGH-TEMP POWER HANDLING: 800° thermoset voice coil for extreme durability\u003c\/li\u003e\n\u003cli\u003eIRON CLOTH SPIDER SYSTEM: Dual-layer spider for stability under heavy load\u003c\/li\u003e\n\u003cli\u003eV-ROM SURROUND: Vario-density surround improves excursion control and longevity\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eDD Audio 6.5\" 750 Watt RMS Dual 2-Ohm VC High Excursion Subwoofer 1506A OPEN BOX\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eIn perfect working condition\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eTested works as it should\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eHas been mounted\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eSmall scratches\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eInstall mark on metal\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eGasket Minor use damage\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eBox has been opened (see pic #2)\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eOpen-box items are not subject to returns. They are sold \"As Is\". All requests for returns will not be accepted.\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eThis listing includes\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cbr\u003e\n  \u003cli\u003e(1) DD Audio 1506A-D2 6.5\" Subwoofer\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cp\u003eThe 1506A is for those who find value in large motors with advanced cooling features, who want the absolute peak of performance every time they start their vehicle, who simply can’t and won’t settle for second best. Now with all the features you've come to expect from the larger 9900C, 9500L, and 2508G. The 1506A revision completes this arc, not with a whimper, but with a bang, ushering in a new era for these made by hand, in the heartland, subwoofers at DD Audio. Check under your second row bench seating in your truck or SUV and you may find untapped real estate that's perfect for a sub enclosure. Given the dimension though, you likely won’t be fitting giant subs in any box that fits. That’s where the 6.5\" comes in. You can recreate the big bass effect of larger subwoofers with an array of smaller ones, and there’s no small subwoofer that does it better than the new 1506A.\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eTHE HEATSINK\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003eThe Dual Stage Heat Sink uses an internal aluminum tube insert to transfer heat away from the pole piece and voice coil and into the finned, aluminum, backplate-mounted heat sink. This process of conduction and convection lowers the working temperature to safer levels, maximizing playing time and efficiency.\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eTHE SPIDER\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003eComplementing the improved surround is DD's new, USA-made Iron Cloth Spider System. These high-roll spiders are capable of 30% more excursion. The new Iron Cloth Spider System continues the tradition of multilayer pressing to meet the Power Tuned stiffness targets, but with the added benefits of higher strength threads weaving through the double or triple layer configurations. The result is substantially elevated performance and long-term durability.\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003e\u003cem\u003e*Spider color may vary depending on production run - design, material, and build quality remain the same.\u003c\/em\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eTHE COIL\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003eThe voice coil is Made in the USA, and has evolved over generations to be the envy of DD's competitors. Among the 5 layers in these complex formers are Nomex and Polyamide, which insulate the coil, protecting the glue joints between the spider and coil former. These synthetic layers are sandwiched by dual aluminum layers, which transfer heat away from the voice coil windings (again, acting as a heat sink). The wire and adhesives are manufactured to endure the most extreme high temperatures, and the coil thermosetting occurs over 2 baking and resin coating cycles. The double slit design helps to reduce distortion and inductance. In short, this voice coil has matured to include the best-known materials and techniques available to deliver matchless performance.\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eTHE MOTOR\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003eThe motor is a work of pure magnetic magic. DD AUDIO uses its own proprietary magnet tooling to maximize the surface area transfer from the low-carbon back and top plates. The motor on the 1506a perfectly protects DD AUDIO's reputation for having the tightest gaps in the industry, with minimal tolerances around the coil windings for increased gap flux. On custom orders, DD offers the option of SuperCharging the gap with neo to further increase flux by 30% or more. The motor also features DD AUDIO's Free Flow Cooling System, which employs vents and cross vents running through the magnet gap, pole piece, top plates, and back plates. The more excursion the speaker sees, the higher the airflow through the motor and around the coil. All motors use Faraday shorting rings to reduce distortion and inductance.\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eTHE CONE\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003eThis sub is Made in the USA with as many Made in the USA components as DD AUDIO can reasonably acquire. Among those components is the USA-made cone, engineered to be the lightest and stiffest pulp cone in existence. The key ingredient to its incredible strength-to-weight ratio is Carbon Fiber. Augmented by Kevlar and a myriad of synthetic and natural fibers, the cone is low-density formed on non-press molds to increase the total cross-sectional area, promoting a web of strengthening ribs across its backside. This high cross-sectional area doubles the rigidity without increasing mass. The exotic fibers cost more, and the cones take longer to form, but the result is audibly distinguishable; and to hear the difference of the 1506a is to hear the difference of handmade, USA-built quality.\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cbr\u003e\n  \u003cli\u003eNEW Aluminum 2 Stage Motor Heatsink\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003e152.4mm Magnet Diameter\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eMulti-Vent Free Flow Cooling Motor\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eShorting Ring Motor\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eHigh-Temp Voice Coil\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eExcursion Optimized ESP Frame\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eV-ROM Vario-Density Surround\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eNon-Pressed Composite Reinforced Pulp Cone\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003e5.75\" Dual Layer Iron Cloth Spider\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eLaminated Tinsel Leads\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eHand Laid Composite Dust Cap\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eEmbossed DDesign Magnet Boot\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eMade In USA\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cbr\u003e\n  \u003cli\u003eModel Number: 1506A\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eSpeaker Size (In): 6.5\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eWatts RMS: 750\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eWatts Peak: 2400\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eImpedance: D2\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eVCD (In): 2\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003ePiston Diameter (In): 5.5\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eFs (Hz): 47.78\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eQms: 5.152\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eQes: 0.864\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eQts: 0.740\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eVas (Liters): 2.398\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eXmech (MM): 48\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eXmax (MM): 10\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eDisplacement: 0.05 Cu Ft\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cbr\u003e\n  \u003cli\u003eMounting Depth: 6.25 Inches\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eCutout Diameter: 6.3125 Inches\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eFrame OD: 7.4375 Inches\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eFrame OD w\/ Gasket: 7.5625 Inches\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eMotor Diameter: 6 Inches\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eMotor Depth: 2.8125 Inches\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e","brand":"DD Audio","offers":[{"title":"Default Title","offer_id":48286521622776,"sku":"DD-1506A-D2-OPEN-7425","price":379.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0029\/9384\/8365\/files\/691583ea06fe861ba76d4faf1aef4634b9d32edad8e3aba696c8c400d4f8c0c4.jpg?v=1777300600","url":"https:\/\/bigjeffaudio.com\/products\/dd-audio-6-5-750-watt-rms-dual-2-ohm-vc-high-excursion-subwoofer-1506a-open-box","provider":"Big Jeff Online Inc","version":"1.0","type":"link"}