Specifications

• Nominal diameter 320 mm (12.0 in)
• Nominal impedance 4 ohms
• Nominal power handling 400 W
• Continuous power handling 800 W
• Sensitivity (1W/1m) 100.0 dB
• Frequency range 50 - 2000 Hz
• Voice coil diameter 76 mm (3.0 in)
• Winding material Aluminium
• Former material Glass Fibre
• Winding depth 19 mm (0.75 in)
• Magnetic gap depth 10 mm (0.4 in)
• Flux density 1.25 T

Design

• Surround shape Double Roll
• Cone shape Exponential
• Magnet material Neodymium Inside Slug
• Spider Single
• Pole design Straight Pole
• Woofer cone treatment: None
• Recommended enclosure 42.0 dm3 (1.48 ft3)
• Recommended tuning 65 Hz

Parameters

• Fs 50 Hz
• Qes 0.21
• Qms 4.2
• Qts 0.2
• Vas 73.0 dm3 (2.5 ft3)
• Sd 522.0 cm2 (80.9 in2)
• Reference efficiency 4.3 %
• Xmax 6.5 mm
• Xvar 6.5 mm
• Mms 53 g
• Bl 20.1 Txm
• Le 1.0 mH
• EBP 238 Hz

Mounting and Shipping Info

• Overall diameter 315 mm (12.4 in)
• Bolt circle diameter 298 mm (11.7 in)
• Baffle cutout diameter 283.0 mm (11.1 in)
• Depth 141 mm (5.5 in)
• Flange and gasket thickness 14 mm (0.55 in)
• Air volume occupied by driver 2.5 dm3 (0.08 ft3)
• Net weight 3.9 kg (8.6 lb)
• Shipping units 1
• Shipping weight 4.5 kg (9.9 lb)
• Shipping box 340x340x170 mm (13.4x13.4x6.7 in)