Down4Sound DBZ 8" Subwoofer 700W RMS
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Subwoofer Wiring Diagram
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The DOWN4SOUND DBz-8 D4 is the ultimate budget banger designed to deliver exceptional performance and value. With a true 700W RMS power rating, this subwoofer provides big, punchy bass without the big price tag. Featuring a dual 4-ohm voice coil configuration, the DBz-8 offers versatile wiring options and strong output in compact enclosures. The real carbon fiber dustcap adds a premium aesthetic while increasing structural rigidity and performance.
Every component is engineered for efficiency, durability, and long-term reliability, making the DBz-8 D4 an ideal upgrade for daily drivers, small-space installs, or budget-friendly high-output systems.
Key Features
- 700W RMS power handling
- Dual 4-ohm voice coil design
- 2.5-inch high-temperature voice coil
- 21 mm Xmax for impressive linear travel
- Real carbon fiber dustcap for strength, rigidity, and premium appearance
- Advanced venting throughout the motor structure for improved cooling
- Heavy-duty construction optimized for compact high-output performance
Technical Specifications (T/S Parameters)
-
Revc (DC Resistance)
6.400 ohm -
Resonance Frequency (Fs)
46.157 Hz -
Qms
1.895 -
Qes
0.618 -
Qts
0.466 -
Mms (Moving Mass)
202.138 g -
Cms (Compliance)
57.318 μm/N -
Rms (Mechanical Resistance)
0.757 -
Vas
3.290 L - Sd: 210.105 cm²
-
BL Product
24.797 T·m -
Sensitivity (SPL)
79.2 dB -
Xmax
21 mm -
Displacement
0.07 cu ft
Engineering and Construction
- Compact, efficient motor engineered for strong output
- Rear gap ventilation for improved coil cooling and reduced thermal compression
- Reinforced suspension system for stable high-excursion performance
- Real carbon fiber dustcap enhances rigidity and prevents deformation
- Precision-wound 2.5" coil supports high power levels without heat fatigue
- Built to provide maximum performance at an affordable cost
Recommended Enclosures
Sealed Enclosure
- 0.3 – 0.4 cu ft (net)
Ported Enclosure
- 0.75 – 1.0 cu ft (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
6.69 in (170 mm) -
Net Weight
23.6 lb (10.7 kg) -
Gross Weight
26.9 lb (12.2 kg)
Why You Should Buy the DBz-8 D4
- High-quality bass on a budget
- Compact 8" form factor with strong low-end output
- Dual 4-ohm coils allow flexible wiring options
- Carbon fiber dustcap adds strength and a premium aesthetic
- Perfect blend of affordability, power, and durability
Ideal Applications
- Daily-driven bass systems requiring big sound in tight spaces
- Builds tuned in the 28–35 Hz range, where the DBz-8 produces deep, rolling lows that come alive with real cabin gain
- Compact ported enclosures, under-seat installs, hatchbacks, and small SUV systems
- SQL-style daily setups emphasizing strong midbass punch with usable low-end authority
- Users wanting responsive, aggressive bass performance without needing a large enclosure
Authorized Down4Sound dealer at JS Ultimate Sounds. Free shipping on orders $99+.
