PW65D4 - 6.5-inch Dual 4-ohm Subwoofer

The PW65D4 is a compact 6.5-inch dual 4-ohm subwoofer built for systems where space is limited but output isn't negotiable. At 350W RMS with a 45 oz ferrite motor, it delivers controlled, authoritative bass in tight enclosures. The dual voice coil configuration gives installers flexible wiring options to match a wide range of amplifier loads.

• 4-layer high temperature copper voice coil — sustains peak performance during extended high-demand listening sessions
• High flux ferrite motor (45 oz) — drives accurate low-frequency reproduction from 42 Hz up through 800 Hz
• IMPP cone material — combines stiffness and light weight for improved transient response
• Polycarbonate spider suspension — engineered for precise excursion control and long-term durability
• Advanced airflow cooling system — manages heat buildup to protect voice coil integrity at high power levels
• Dual 4-ohm voice coils — wire to 2 ohms or 8 ohms to match amplifier requirements
• 350W RMS / 700W peak — reliable power handling in a 6.5-inch form factor

Specifications

• Nominal Impedance: Dual 4Ω
• RMS Power Handling: 350 Watts
• MAX Power Handling: 700 Watts
• Frequency Response: 42 Hz
• Voice Coil Diameter: 2" (50.8mm)
• Voice Coil Material: ASV
• Cone Material: IMPP
• Frame: Steel
• Magnet: Ferrite
• Magnet Weight: 127 oz (45 oz)
• Xmax: 8.8mm

Thiele/Small Parameters

• Revc: 1.6 Ω
• Sensitivity: 79.6 dB
• Fs: 47.2 Hz
• Qts: 0.82
• Qes: 0.89
• Qms: 7.9
• Rms: 2.3 kg/s
• Vas: 4.7 L
• η0 (Efficiency): 0.07%
• CP: 2987.2 µF
• Res: 15.5 Ω
• Cms: 0.15 mm/N
• BL: 6.3 T·m
• Le: 0.58 mH
• Mms: 71.9 g
• Sd: 143.1 cm²

Dimensions

• Overall Depth: 4.92" (125mm)
• Mounting Depth: 4.21" (107mm)
• Overall Diameter: 6.77" (172mm)
• Cutout Diameter: 5.87" (149mm)