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Down4Sound DBZ 12" Subwoofer 1300W RMS

SKU: DBz12D4
Sale price$249.99
In stock

Impedance: D4
Subwoofer Wiring Diagram

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The DOWN4SOUND DBz-12 D4 is engineered for car audio enthusiasts who want big bass, rugged durability, and outstanding value. Delivering a true 1300W RMS, this 12-inch subwoofer provides aggressive, punchy low-frequency output suited for daily-driven systems and high-demand builds. Featuring a dual 4-ohm voice coil configuration and a real carbon fiber dustcap, the DBz-12 D4 offers flexible wiring options, premium styling, and long-lasting performance.


Key Features

  • 1300W RMS power handling
  • Dual 4-ohm voice coil design
  • 2.75-inch high-temperature voice coil
  • 28 mm one-way Xmax
  • Real carbon fiber dustcap
  • Advanced motor venting for improved cooling
  • Heavy-duty motor structure

Technical Specifications (T/S Parameters)

  • Revc (DC Resistance)

    6.050 ohm
  • Resonance Frequency (Fs)

    39.707 Hz
  • Qms

    2.433
  • Qes

    0.559
  • Qts

    0.454
  • Mms (Moving Mass)

    349.676 g
  • Cms (Compliance)

    45.946 μm/N
  • Rms

    0.779
  • Vas

    18.391 L
  • Sd: 59.093 cm²
  • BL Product

    30.757 T·m
  • Sensitivity (SPL)

    85.0 dB
  • Xmax

    28 mm
  • Displacement

    0.15 cu ft

Engineering and Construction

  • Extended pole piece for improved linear travel
  • Rear gap and pole venting for coil cooling
  • Long-fiber spider system for stable suspension control
  • Precision-wound 2.75-inch voice coil
  • Premium carbon fiber dustcap for enhanced rigidity

Recommended Enclosure

  • Sealed

    1.0 cubic foot
  • Ported

    1.75 cubic feet
  • Recommended Tuning

    32 Hz
  • Recommended Port Area

    21 to 26 square inches total

Physical Dimensions

  • Cutout Diameter

    11.26 in (286 mm)
  • Mounting Depth

    7.68 in (195 mm)
  • Outside Diameter

    12.44 in (316 mm)
  • Motor Diameter

    11.14 in (283 mm)
  • Net Weight

    32.8 lb
  • Gross Weight

    36.4 lb

Why You Should Buy

  • Strong 1300W RMS performance
  • Deep, punchy low-frequency output
  • Flexible dual 4-ohm wiring options
  • Durable construction with premium materials
  • Carbon fiber dustcap enhances appearance and reliability

Ideal Applications

  • Daily-driven systems requiring strong, reliable low-end performance
  • Ported or sealed enclosures in sedans, SUVs, trucks, and hatchbacks
  • Systems tuned for deeper, fuller bass
  • SQL-style daily setups balancing punch and depth
  • Users seeking high-output performance at an affordable price

Authorized Down4Sound dealer at JS Ultimate Sounds. Free shipping on orders $99+.