ECHO MAX SERIES 12" Dual 4 Ohm Subwoofer - 1,200 Watts RMS Power Handling (SW12D4)

The SW12D4 is a dual 4-ohm, 12-inch subwoofer built around a 1200W RMS power rating and a 3-inch high-temperature voice coil, making it a strong candidate for high-demand single or multi-amplifier setups. Its composite glass fiber cone, double-stacked ferrite magnets, and vented backplate work together to sustain clean output under sustained load. This is a woofer designed for systems where consistent performance matters as much as peak power.

• 1200W RMS / 2400W Peak — 135 oz double-stacked ferrite magnet assembly drives a 3-inch (76.5mm) black-coated high-temperature voice coil for sustained high-output performance.
• Composite glass fiber cone — 3K glass fiber and semi-pressed pulped construction balances rigidity and controlled flex for accurate low-frequency reproduction.
• Extended pole piece with bumped backplate ventilation — channels heat away from the voice coil rapidly, reducing thermal compression during extended use.
• Aluminum die-cast basket — eliminates structural resonance and maintains precise driver geometry under high excursion.
• Massive ridge-strengthened surround — supports extensive linear displacement across the 30–400 Hz frequency range.
• Custom copper terminals — accept wire up to 4 AWG for low-resistance connections in high-current applications.