DOWN4SOUND | DBZ 8″ SUBWOOFER | 700W RMS | D2

The DOWN4SOUND DBz-8 D2 is engineered for listeners who want powerful, precise, and affordable low-frequency performance in a compact footprint. Featuring a high-efficiency motor design, extended mechanical throw, and a real carbon fiber dustcap, the DBz-8 delivers impressive output and accuracy suitable for daily driving, compact installs, and value-focused high-performance systems.
This model provides a true 700W RMS power rating and a dual 2-ohm voice coil configuration for flexible amplifier matching and wiring options. Every component is built for durability, cooling efficiency, and long-term reliability under demanding playback conditions.

Key Features

700W RMS power handling
Dual 2-ohm voice coil design
2.5-inch high-temperature voice coil
21 mm Xmax for strong linear excursion
Real carbon fiber dustcap for added strength and rigidity
Advanced venting throughout the motor structure for improved cooling
Heavy-duty construction designed for high output in compact boxes
PERFECT SUBWOOFER FOR ALMOST ANY 8 INCH SUBWOOFER NEEDS

Technical Specifications (T/S Parameters)

Revc (DC Resistance): 4.000 ohm
Resonance Frequency (Fs): 44.954 Hz
Qms: 2.440
Qes: 0.568
Qts: 0.461
Mms (Moving Mass): 179.966 g
Cms (Compliance): 69.651 m/N
Rms (Mechanical Resistance): 0.757
Vas: 3.988 L
Sd: 200.105 cm
BL Product: 18.923 Tm
Sensitivity (SPL): 79.9 dB
Xmax: 21 mm
Displacement: 0.13 cu ft

Engineering and Construction

Optimized compact motor for high efficiency and strong output
Rear gap ventilation for reduced coil temperatures during extended play
Reinforced suspension for reliable high-excursion performance
Precision-wound 2.5″ coil for thermal stability
Carbon fiber dustcap enhances rigidity and prevents deformation
Built to deliver maximum output at an affordable cost

Recommended Enclosures
Sealed Enclosure:

0.3 0.4 cubic feet (net)

Ported Enclosure:

0.75 1.0 cubic feet (net)
Recommended Tuning: 32 Hz
Recommended Port Area: 9 15 sq in total

Physical Dimensions

Cutout Diameter: 7.32 in (186 mm)
Mounting Depth: 6.61 in (168 mm)
Outside Diameter: 8.71 in (221 mm)
Motor Diameter: 7.32 in (186 mm)
Net Weight: 23.6 lb (10.7 kg)
Gross Weight: 26.9 lb (12.2 kg)

Why You Should Buy the DBz-8 D2

Strong, clean output at an affordable price
Compact footprint with surprising low-end authority
Dual 2-ohm coils provide flexible wiring options
Carbon fiber dustcap adds strength and premium appeal
Designed for users who want big performance without overspending

Ideal Applications

Daily-driven builds needing big bass in limited space
Systems tuned in the 2835 Hz range, where the DBz-8 delivers deep, rolling lows amplified by real vehicle cabin gain
Compact ported boxes, under-seat enclosures, hatchbacks, and small SUV installs
SQL-style daily systems with strong punch and usable low-end extension
Users wanting responsive, hard-hitting bass that blends depth with aggression