Down4Sound DBZ 10" Subwoofer 1300W RMS

The DOWN4SOUND DBz-10 D4 is built for car audio enthusiasts seeking massive bass, rugged performance, and unbeatable value. Delivering a true 1300W RMS, this subwoofer produces strong, punchy bass without demanding a premium budget. With a dual 4-ohm voice coil configuration, the DBz-10 D4 offers wiring flexibility for a wide variety of amplifier setups. Its real carbon fiber dustcap adds a sleek aesthetic while improving rigidity and long-term durability.

Built to perform in both compact and mid-sized enclosures, the DBz-10 D4 delivers serious output for daily drivers, demo setups, and cost-effective high-performance builds.

Key Features

• 1300W RMS power handling
• Dual 4-ohm voice coil design
• 2.75-inch high-temperature voice coil
• 28 mm one-way Xmax for extreme linear excursion
• Real carbon fiber dustcap for strength, rigidity, and premium appearance
• Advanced venting throughout the motor structure for improved cooling
• Heavy-duty build engineered for long-term high-output use

Technical Specifications (T/S Parameters)

• Revc (DC Resistance)

  6.050 ohm

• Resonance Frequency (Fs)

  40.803 Hz

• Qms

  2.360

• Qes

  0.510

• Qts

  0.420

• Mms (Moving Mass)

  331.124 g

• Cms (Compliance)

  45.948 μm/N

• Rms

  0.795

• Vas

  8.600 L
• Sd: 56.305 cm²

• BL Product

  31.746 T·m

• Sensitivity (SPL)

  82.5 dB

• Xmax

  28 mm (one-way, mechanical)

• Displacement

  0.09 cu ft

Engineering and Construction

• High-efficiency motor system engineered for aggressive output
• Rear gap and pole venting for improved cooling and reduced thermal compression
• Reinforced suspension designed for reliable high-excursion performance
• Precision-wound 2.75" voice coil built for thermal strength
• Premium carbon fiber dustcap improves rigidity and reduces cone flex
• Built to maximize output while maintaining long-term durability

Recommended Enclosures

Sealed Enclosure

• 0.5 cubic foot (net)

Ported Enclosure

• 1.0 cubic foot (net)

• Recommended Tuning

  32 Hz

• Recommended Port Area

  12–15 square inches total port area

This enclosure range gives the DBz-10 D4 excellent balance between low-end extension and punchy upper bass for daily listening while maintaining proper airflow through the port.

Physical Dimensions

• Cutout Diameter

  9.45 in (240 mm)

• Mounting Depth

  7.36 in (187 mm)

• Outside Diameter

  10.79 in (274 mm)

• Motor Diameter

  7.48 in (190 mm)

• Net Weight

  31.7 lb (14.4 kg)

• Gross Weight

  35.3 lb (16.0 kg)

Why You Should Buy the DBz-10 D4

• Delivers true 1300W RMS performance suitable for demanding systems
• Compact footprint with impressive output capability
• Dual 4-ohm coils provide wiring flexibility across common amplifier setups
• Carbon fiber dustcap enhances both appearance and structural rigidity
• Perfect blend of affordability, durability, and daily-driving performance

Ideal Applications

• Daily-driven builds needing high output without large enclosure requirements
• Systems tuned in the 28–35 Hz range, where the DBz-10 D4 produces deep, rolling lows enhanced by real cabin gain
• Ported or sealed enclosures in sedans, SUVs, hatchbacks, and trucks
• SQL-style daily setups seeking a balance of low-end authority and punch
• Users wanting responsive, aggressive bass performance at a budget-friendly price

Authorized Down4Sound dealer at JS Ultimate Sounds. Free shipping on orders $99+.