DOWN4SOUND | DBZ 15″ SUBWOOFER | 1300W RMS | D2

The DOWN4SOUND DBz-15 D2 is built for listeners who want massive bass output, rugged construction, and exceptional value. With a true 1300W RMS rating, this 15-inch subwoofer delivers aggressive low-frequency performance suited for daily-driven systems and high-output builds. Featuring a dual 2-ohm voice coil configuration and a real carbon fiber dustcap, the DBz-15 D2 offers strong durability, wiring flexibility, and powerful bass response.

Key Features

1300W RMS power handling
Dual 2-ohm voice coil design
2.75-inch high-temperature voice coil
30 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): 3.960 ohm
Resonance Frequency (Fs): 39.276 Hz
Qms: 2.872
Qes: 0.601
Qts: 0.497
Mms (Moving Mass): 449.095 g
Cms (Compliance): 36.653 m/N
Rms: 0.785
Vas: 40.336 L
Sd: 88.141 cm
BL Product: 27.022 Tm
Sensitivity (SPL): 88.0 dB
Xmax: 30 mm
Displacement: 0.19 cu ft

Engineering and Construction

Extended pole piece for improved linear excursion
Rear gap and pole venting to enhance cooling
Long-fiber spider system for suspension control
Precision-wound 2.75-inch voice coil
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 output
Deep, powerful low-frequency response
Flexible dual 2-ohm wiring options
Durable construction built to handle high SPL
Carbon fiber dustcap adds strength and premium appearance

Ideal Applications

Daily-driven systems demanding deep, reliable bass
Ported or sealed enclosures in sedans, SUVs, trucks, and hatchbacks
Systems tuned in the range for deeper low-end performance
SQL-style daily setups blending impact and depth
Users wanting high-output performance at an affordable cost