21" cast aluminium chassis neodymium magnet low frequency loudspeaker.

• Advanced temperature control using 3-channel tuned venting system provides highly efficient cooling across the frequency band
• Voice coil typically operates at 30°C lower temperature than other leading drivers in this class
• Polysiloxane laminated triple suspension provides much greater stability and improved cone displacement symmetry
• Lead-out wires precision woven into suspension minimises excess motion and reduces fatigue
• Double-sided, weatherproof cone coating enhances durability