{"product_id":"velodyne-dd-12-direct-drive-series-1-subwoofer","title":"Velodyne DD-12, Direct Drive Series 1 Subwoofer","description":"\u003cp\u003eThe\u003cstrong\u003e Velodyne DD-12 \u003c\/strong\u003e(Digital Drive 12) was the company’s flagship, microprocessor-controlled, sealed-box active subwoofer. The DD-12 was designed to deliver ultra-low distortion bass through advanced digital signal processing. At its core, the DD-12 utilizes a 12-inch forward-firing driver—featuring a tandem 3-inch push-pull voice coil and a substantial 20lb magnet structure—driven by a Class D Energy Recovery System (ERS) amplifier that produces 1250W RMS and up to 3000W of dynamic power. This engineering enables the unit to reproduce low frequencies down to 17Hz (±3dB), providing high-output, nuanced bass suitable for both critical music listening and high-impact home theater applications.\u003c\/p\u003e\n\u003cp\u003eA defining feature of the DD-12 is its proprietary \u003cstrong\u003eDigital High-Gain Servo \u003c\/strong\u003esystem, which monitors driver cone motion at over 15,000 times per second to ensure real-time corrections, maintaining harmonic distortion below 0.5%. This level of precision is matched by a comprehensive digital room management system, which uses an optional microphone to measure the in-room response. The DD-12 provides a composite video output to a TV monitor, which allows the user to generate and view an onscreen display. From there, users can apply an 8-band parametric equalizer; adjust crossover frequencies (15-199Hz) and slopes (6-48dB\/octave); and provide phase correction (0-180° in 15° increments) via a remote control.\u003c\/p\u003e\n\u003cp\u003eAlthough physically compact, the DD-12 weighs in at \u003cstrong\u003e67 lbs\u003c\/strong\u003e. Visually, it fits in with any setup, and sonically it has fantastic adjustability and plays deep, powerful bass with authority.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eThis subwoofer has a few surface scratches to the top finish and is missing the calibration mic, which an be found online.\u003cspan class=\"Apple-converted-space\"\u003e  \u003c\/span\u003eA replacement remote and power cord will be provided. Priced accordingly!\u003c\/em\u003e\u003cspan class=\"Apple-converted-space\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003e$799 (plus applicable shipping and\/or sales tax)\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e","brand":"Holt Hill Audio","offers":[{"title":"Default Title","offer_id":43052124897347,"sku":null,"price":799.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2197\/6387\/files\/VelodyneDD-1202.jpg?v=1773935430","url":"https:\/\/holthill.com\/products\/velodyne-dd-12-direct-drive-series-1-subwoofer","provider":"Holt Hill Audio","version":"1.0","type":"link"}