Specifications

• Nominal diameter 320 mm (12.0 in)
• Nominal impedance 8 ohms
• Minimum impedance 6.3 ohms
• Nominal power handling 250 W
• Continuous power handling 500 W
• Sensitivity (1W/1m) 98.0 dB
• Frequency range 50 - 3000 Hz
• Voice coil diameter 64 mm (2.5 in)
• Winding material Copper
• Former material Glass Fibre
• Winding depth 13 mm (0.51 in)
• Magnetic gap depth 8 mm (0.31 in)
• Flux density 1.15 T

Design

• Surround shape Double Roll
• Cone shape Exponential
• Magnet material Neodymium Inside Slug
• Spider Single
• Pole design Straight Pole
• Woofer cone treatment WP Waterproof Front Side
• Recommended enclosure 40.0 dm3 (1.41 ft3)
• Recommended tuning 64 Hz

Parameters

• Fs 52 Hz
• Re 5.5 ohms
• Qes 0.32
• Qms 4.3
• Qts 0.3
• Vas 64.0 dm3 (2.25 ft3)
• Sd 522.0 cm2 (80.9 in2)
• Reference efficiency 3.4 %
• Xmax 4.5 mm
• Xvar 6.0 mm
• Mms 55 g
• Bl 17.5 Txm
• Le 1.1 mH
• EBP 162 Hz

Mounting and Shipping Info

• Overall diameter 313 mm (12.32 in)
• Bolt circle diameter 299 mm (11.77 in)
• Baffle cutout diameter 282.0 mm (11.1 in)
• Depth 133 mm (5.24 in)
• Flange and gasket thickness 9 mm (0.35 in)
• Air volume occupied by driver 2.0 dm3 (0.07 ft3)
• Net weight 1.9 kg (4.2 lb)
• Shipping weight 2.4 kg (5.3 lb)
• Shipping box 340x340x170 mm (13.4x13.4x6.7 in)