DS18 ZR212LD Bass Package 2 x ZR12D4 12 inch Subwoofers In a Ported Box 3000 Watts. The ZR212LD provides dual 12 inch subwoofers loaded into a ported box for the listeners who like it loud! The ported box is tuned to 29 Hz and helps get the most from your subwoofers by delivering a deeper, punchier bass. Included in the ported box are two ZR12.4D subwoofers, one of our bestselling car audio subs, designed with dual 4-Ohms voice coils wired in parallel for a nominal impedance of 1-Ohm. This loaded subwoofer combo offers great sound through high-quality and high-power subwoofers in a prefabricated box that is guaranteed to last! The RMS requirement is 1500W RMS and 3000W max: so in order to power this combo to maximum potential, we recommend a 2000W RMS Amplifier like the ZR2000.1D, H-KO2, or EXL-P2000X1D. HIGHLIGHTS: The box is constructed of thick 3/4 inch MDF for great strength, resonance, and tuned to 29hz for low and hard hitting bass Dual 12 inch subwoofers with the cone area to blast great sounding bass more efficiently Subwoofers KEY FEATURES: ZR12.4D Two 12 inch DVC subwoofer Max Power Handling: 1500 watts each RMS Power Handling: 750 watts each Frequency Response: 25hz-200hz Voice Coil Diameter: 2.5 inch Voice Coil Material: Copper Impedance: Dual Voice Coil 4-Ohm Sensitivity: 82 DB Magnet Weight: 100 Oz Magnet Material: Ferrite Mounting Depth: 6.6 inch Xmax: 25mm one way BOX: Box Material: 3/4 inch MDF Box Covering: Carpet with DS18 logo Box Tuning: 29hz Box Type: Side Ported Internal Volume: 5.3 ft3Demensions: Height: 14.48 inch Width: 36.22 inch Depth 1: 19.68 inch Depth 2: 21.65 inch GREAT FOR: Car AudioPro AudioHome SolutionsHi-Fi InstallationDIY Projects SPECIFICATIONS: WARRANTY 1-Year Limited Manufacturer Defect UNIVERSAL Yes AAIAID FXVX VEHICLE TYPE Car|Jeep|Truck/SUV BRAND DS18 UPC 810005189323 WATT 3000 Watts DIM LENGTH 1.0 DIM WIDTH 1.0 DIM HEIGHT 1.0 DIM UNIT in WEIGHT 1.0 WEIGHT UNIT lb Installation Guide