Down4Sound DBZ 15" Subwoofer 1300W RMS
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Subwoofer Wiring Diagram
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The DOWN4SOUND DBz-15 D4 is built for listeners who want massive bass output, rugged construction, and unbeatable value. With a true 1300W RMS rating, this 15-inch subwoofer is designed to deliver aggressive low-frequency performance in daily-driven systems and high-output builds. Featuring a dual 4-ohm voice coil configuration and a real carbon fiber dustcap, the DBz-15 D4 offers strong durability, versatile wiring options, and powerful bass response.
Key Features
- 1300W RMS power handling
- Dual 4-ohm voice coil design
- 2.75-inch high-temperature voice coil
- 30 mm 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)
39.561 Hz -
Qms
2.826 -
Qes
0.714 -
Qts
0.570 -
Mms (Moving Mass)
435.722 g -
Cms (Compliance)
37.445 μm/N -
Rms
0.774 -
Vas
40.977 L - Sd: 88.141 cm²
-
BL Product
30.322 T·m -
Sensitivity (SPL)
87.4 dB -
Xmax
30 mm -
Displacement
0.19 cu ft
Engineering and Construction
- Extended pole piece for linear excursion
- Rear gap and pole venting for improved airflow and cooling
- Long-fiber spider system for suspension control
- Precision-wound 2.75-inch coil for high thermal capacity
- Premium carbon fiber dustcap for added rigidity
Recommended Enclosure
-
Sealed
2.0 cubic feet -
Ported
3.0 cubic feet -
Recommended Tuning
32 Hz -
Recommended Port Area
36 to 45 square inches total
Physical Dimensions
-
Cutout Diameter
13.86 in (352 mm) -
Mounting Depth
8.43 in (214 mm) -
Outside Diameter
15.59 in (396 mm) -
Motor Diameter
13.74 in (349 mm) -
Net Weight
34 lb -
Gross Weight
37.9 lb
Why You Should Buy
- Strong 1300W RMS performance
- Deep, powerful low-frequency output
- Dual 4-ohm coils for flexible wiring
- Durable construction capable of handling high SPL
- Carbon fiber dustcap for strength and visual appeal
Ideal Applications
- Daily-driven systems needing deep, powerful bass
- Ported or sealed enclosures in SUVs, sedans, hatchbacks, and trucks
- Systems tuned in the 28–35 Hz range for fuller low-end performance
- SQL-style daily setups requiring both punch and depth
- Users seeking high-value performance without sacrificing output
Authorized Down4Sound dealer at JS Ultimate Sounds. Free shipping on orders $99+.
