RW12D4 - Echo Series 12 Inch Subwoofer - 600 Watts Power Dual 4 OHM Voice Coil, 2" Black-coated 4 Layer High Temperature Voice Coil, Competition Grade Pressed Paper Cone

The RW12D4 is a 12-inch dual 4-ohm daily driver built for efficiency and long-term reliability without sacrificing output. Its ferrite magnet motor and high-temperature copper voice coil are designed to sustain peak performance over extended listening sessions. Whether installed in a ported or sealed enclosure, this subwoofer handles a wide range of builds and listening styles.

• 300W RMS / 600W Peak — handles sustained power without thermal stress
• High-temperature 2-inch (50.8mm) copper voice coil — built for extended high-output use
• 40 oz. single slug ferrite magnet motor — delivers consistent, punchy low-frequency response
• Pressed pulp cone with cotton fibers — balances stiffness and flex for accurate bass reproduction
• High-roll foam surround — allows deep excursion while maintaining control
• Advanced cooling structure — optimizes thermal management during high-demand playback
• Dual 4-ohm voice coil — wiring flexibility for 2-ohm or 8-ohm final impedance configurations

Specifications

• Nominal Impedance: Dual 4Ω
• RMS Power Handling: 300 Watts
• MAX Power Handling: 600 Watts
• Frequency Response: 35–300 Hz
• Voice Coil Diameter: 2" (50.8mm)
• Voice Coil Material: ASV
• Cone Material: Fiber Paper
• Frame: Steel
• Magnet: Ferrite
• Magnet Weight: 112 oz (40 oz)
• Xmax: 7.5mm

Thiele/Small Parameters

• Fs: 33 Hz
• Qts: 0.66
• Qes: 0.78
• Qms: 4.43
• Vas: 60.6 L (2.14 ft³)
• Sensitivity (1W/1M): 87 dB

Dimensions

• Overall Depth: 5.83" (148.5mm)
• Mounting Depth: 5.12" (130.5mm)
• Overall Diameter: 12.05" (306.2mm)
• Cutout Diameter: 10.94" (278mm)