View this product description in Norwegian.

Features:
 15" ferrite woofer provides 400Wrms power handling (AES Standard) and 97dB sensitivity
 3" high temperature Inside/Outside voice coil efficiently dissipates heat,
preventing sensitivity loss through thermal compression
 FlexirolTM surround for greater excursion control
 Low frequency response, down to 40Hz
 Smart chassis design minimises acoustic distortion
 Specially treated weather-resistant cone
General Specifications:

• Nominal diameter: 381mm/15in
• Power rating: 400Wrms
• Nominal impedance: 8 Ohm
• Sensitivity: 97dB
• Frequency range: 40-4000Hz
• Voice coil diameter: 75mm/3in
• Chassis type: Cast aluminium
• Magnet type: Ferrite
• Magnet weight: 2.3kg/81oz
• Coil material: Round copper
• Former material: Glass fibre
• Cone material: Glass loaded paper with weather-resistant impregnation
• Surround material: Cloth-sealed
• Suspension: Single
• Xmax: 5.5mm/0.22in
• Gap depth: 9mm/0.35in
• Voice coil winding width: 20mm/0.79in

Small Signal Parameters:

• D: 0.33m/8.38in
• Fs: 45.3Hz
• Mms: 88.69g/3.13oz
• Mmd: 74.54g/2.63oz
• Qms: 3.07
• Qes: 0.46
• Qts: 0.40
• Re: 5.36 Ohm
• Vas: 143.85lt/5.08ft3
• BI: 17.24Tm
• Cms: (mm/N)  0.14mm/N
• Rms: 8.22kg/s
• Le: (at 1kHz)  1.3mH

Mounting Information:

• Overall diameter: 385mm/15.16in
• Overall depth: 161mm/6.34in
• 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: 6.4kg/14.1lb