Bass Rockers BRSW12D4 12” Dual 4-Ohm DVC Subwoofer 500W RMS, Heavy Duty Steel Basket

The Bass Rockers BRSW12D4 is a heavy-duty 12-inch subwoofer designed to deliver strong, clean bass for daily systems. It features a Dual Voice Coil 4+4Ω configuration for flexible wiring options and is built with a steel basket, paper cone, foam surround, and ferrite motor for durability and reliable performance. With 500W RMS power handling and 88dB sensitivity, this subwoofer is a solid choice for sealed or ported enclosure builds where you want tight low-end impact and consistent output.

Key Features

• 12" (320mm) subwoofer for deep bass performance
• Dual 4Ω voice coils (4+4Ω) for flexible wiring (2Ω or 8Ω final load)
• 500W RMS power handling for dependable daily use
• 88dB ±3dB sensitivity (1W/1m)
• Steel basket for strength and stability
• Ferrite magnet motor (140mm × 20mm)

Specifications

• Nominal Diameter: 320mm (12")
• Nominal Impedance: 4+4Ω (Dual Voice Coil)
• Power Rating: 500W RMS
• Sensitivity (1W/1m): 88dB ±3dB
• Frequency Range: 50Hz – 500Hz
• Voice Coil Diameter: 50mm
• Voice Coil Length: 28mm
• Air Gap Height: 8mm
• Magnet Dimension: 140mm × 20mm

Thiele & Small (T/S) Parameters

• Fs: 47Hz
• Re: 3.6Ω + 3.6Ω
• Qms: 3.5
• Qes: 0.9
• Qts: 0.7
• Vas: 47L
• BL: 7.9 N/A
• Xmax: 11mm
• Sd: 53 (as listed)
• Cms: 118 M/N (as listed)

Materials

• Basket: Steel
• Cone & Dust Cap: Paper
• Surround: Foam
• Voice Coil Wire: EISV
• Voice Coil Bobbin: BASV
• Magnet: Ferrite

Mounting Information

• Overall Diameter: 320mm
• Bolt Circle Diameter: 287mm
• Baffle Cutout Diameter: 300mm
• Mounting Depth: 95mm

Note: This is a passive subwoofer and requires an external amplifier and a properly designed enclosure for best performance.