Features:

•  21" neodymium subwoofer offers 1600Wrms (AES standard) power handling
• and 98dB sensitivity
•  5" high temperature Inside/Outside voice coil efficiently dissipates heat, preventing
• sensitivity loss through thermal compression
•  Double suspension and a "multi-roll" surround provide exceptional linearity at
• extremes of cone excursion
•  Rigid lightweight carbon fibre loaded cone delivers improved performance and
• faster response
•  Intelligent heat management in both chassis and magnet assembly design
• further minimizes distortion

General Specifications:

• Nominal diameter: 530mm/21in
• Power rating: 1600Wrms
• Nominal impedance: 8 Ohm
• Sensitivity: 98dB
• Frequency range: 30-3000Hz
• Voice coil diameter: 125mm/5in
• Chassis type: Cast aluminium
• Magnet type: Neodymium
• Coil material: Round copper
• Former material: Glass fibre
• Cone material: Carbon fibre loaded paper
• Surround material: Cloth-sealed
• Suspension: Double
• Xmax: 9mm/0.35in
• Gap depth: 12mm/0.47in
• Voice coil winding width: 30mm/1.18in

Small Signal Parameters:

• D: 0.46m/18.11in
• Fs: 30.2Hz
• Mms: 318.85g/11.26oz
• Mmd: 280.52g/9.9oz
• Qms: 5.231
• Qes: 0.309
• Qts: 0.291
• Re: 5.36 Ohm
• Vas: 341.43lt/12.05ft3
• BI: 32.39Tm
• Cms: 0.087mm/N
• Rms: 11.55Kg/s
• Le: (at 1kHz) 2.063mH

Mounting Information:

• Overall diameter: 550mm/21.65in
• Overall depth: 254mm/10in
• Cut-out diameter: 492mm/19.37in
• Mounting slot dimensions: 12.5mm x 8.5mm/0.49in x 0.33in
• Number of mounting slots: 8
• Mounting slot PCD range: 520-528mm/20.5-20.8in
• Unit weight: 12.8kg/8.8lb