View this product description in Norwegian.

Features:
15" ferrite woofer provides 1000Wrms (AES standard) power handling and a frequency response of 40Hz-2500Hz
 4" 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
 Intelligent heat management in both chassis and magnet assembly design further
minimizes distortion
 Less than 10kg,very low weight for this product class
General Specifications:

• Nominal diameter: 381mm/15in
• Power rating: 1000Wrms
• Nominal impedance: 8 Ohm
• Sensitivity: 96dB
• Frequency range: 40-2500Hz
• Voice coil diameter: 100mm/4in
• Chassis type: Cast aluminium
• Magnet type: Ferrite
• Magnet weight: 3.1kg/110oz
• Coil material: Round copper
• Former material: Glass fibre
• Cone material: Glass loaded paper with weather resistant impregnation
• Surround material: Cloth-sealed
• Suspension: Double
• Xmax: 8mm/0.33in
• Gap depth: 9.5mm/0.37in
• Voice coil winding width: 25mm/0.99in

Small Signal Parameters:

• D: 0.33m/12.99in
• Fs: 40.5Hz
• Mms: 153.53g/5.42oz
• Mmd: 139.38g/4.92oz
• Qms: 3.98
• Qes: 0.36
• Qts: 0.33
• Re: 5.10 Ohm
• Vas: 104.27lt/3.68ft3
• BI: 23.53Tm
• Cms: 0.10mm/N
• Rms: 9.81kg/s
• Le: (at 1kHz) 1.8mH

Mounting Information:

• Overall diameter: 385mm/15.16in
• Overall depth: 180mm/7.1in
• Cut-out diameter: 351mm/13.82in
• Mounting slot dimensions: 10mm x 7mm/0.39in x 0.27in
• Number of mounting slots: 8
• Mounting slot PCD range: 365-375mm/14.37-14.76in
• Unit weight: 9.7kg/21.3lb