DC Audio M4-6.5" Subwoofer

DC Audio M4-6.5" Subwoofer is a compact 6.5-inch driver engineered to deliver high output from ultra-small enclosures, ideal for bass-in-a-small-space installs. It is designed to operate in sealed enclosures as small as 0.15 ft³ or ported boxes around 0.3 ft³ per speaker, maximizing bass in limited space.

• Extremely rigid non-pressed paper cone: Keeps the cone tight under excursion, reducing distortion and improving transient response in tight enclosures.
• High Roll Stitched Multilayered reinforced polymer foam surround: Provides durable edge control for long-term reliability and consistent cone movement.
• Laminated Nomex Spiders: Stiff, stable spider assembly helps maintain consistent suspension characteristics under load.
• Sewn flat heavy duty tinsel lead wire: Ensures reliable electrical connections during high excursion.
• Die-Cast DC aluminum black frame / no invert mount: Rigid chassis for precision mounting and heat management in compact installs.
• FEA analyzed and optimized motor assembly – Fully CNC machined: Precision-built magnet/coil assembly for consistent performance and alignment.
• Rubber mounting gasket and custom tooled motor boot: Seals and isolates the motor assembly for durable, vibration-resistant mounting.
• DVC 2.0” Copper voice coil: Dual voice coil configuration with a 2.0" copper coil for flexible wiring options and heat dissipation.
• Mounting Depth: 5"
• Mounting Hole Diameter: 6.08"
• Outside Driver Diameter: 7.16"
• VC Diameter: 2.0"
• Power Handling rms/peak: 300/600 W
• Displacement: 0.05 ft³
• Sd: 132.734 cm²
• Vas: 1.933 L (D2) / 2.029 L (D4)
• Cms: 0.077 mm/N (D2) / 0.081 mm/N (D4)
• Mms: 109.52 g (D2) / 84.98 g (D4)
• Fs: 54.70 Hz (D2) / 60.65 Hz (D4)
• Bl: 16.85 N (D2) / 19.10 N (D4)
• Re: 4 Ω (D2) / 8 Ω (D4)
• Le: 0.00 mH
• Qms: 3.729 (D2) / 4.671 (D4)
• Qes: 0.530 (D2) / 0.705 (D4)
• Qts: 0.464 (D2) / 0.613 (D4)
• Xmax: 16 mm
• Ref SPL @1 watt: 79.6 dB (D2) / 79.9 dB (D4)
• Sealed Box: 0.15 ft³ (both versions)
• Suggested Ported Box: 0.3 ft³ (both versions)

In a real car audio build, this sub delivers strong bass output from very small enclosures, making it well suited for space-constrained trunks or cabins. Its dual voice coil and precisely engineered motor assembly contribute to reliable performance at 300 W RMS with a 600 W peak, while the small enclosure requirements help maximize usable cargo space without sacrificing low-end extension.