











Down4Sound DBZ 12" Subwoofer 1300W RMS
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Most products are covered by the manufacturer's warranty against defects. Damage from over-powering or improper installation isn't covered — we'll help coordinate any valid claim.
Tell us your vehicle, subwoofers and electrical setup and our team will help you match the right gear. Reach out before you buy.
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+.


