This 18" low frequency transducer has been specially designed to supply incredibly high sound pressure in the low frequency region, with exceptional high power capacity and minimum harmonic distortion. This model features a 4.5" (114 mm) voice coil, edgewound aluminium ribbon wire, a moving mass at least half the weight of pure copper, a powerful, vented magnetic circuit, optimum cooling system which provides fast heat exchange, reduced thermal power compression and double spider assembly. The result is an incredible highly efficient transducer for subwoofer applications, the ability to handle high elongation, extremely low distortion and reduced thermal power compression.

Key Features

- High power handling (750 w AES) - 4.5” (114 mm.) edgewound aluminium ribbon voice coil - Dual spider system - High efficiency: 4% (98 dB 1w @ 1m) - Large Xmax: 9 mm. - Additional heat dissipation due to the use of a metal intercooler - Designed for high demanding subwoofer and woofer applications

Technical Specifications

Nominal diameter 462 mm. 18 in. Rated impedance 8 ohms. Minimum impedance 7.4 ohms. Power capacity 750 w AES Program power 1500 w Sensitivity 98 dB  2.83v @ 1m @ 2pi Frequency range 25-1500 Hz Recom. enclosure vol. 80 / 200 l 2.8 / 7 ft.3 Voice coil diameter 114 mm. 4.5 in. Magnetic assembly weight 10 kg. 22 lb. BL Factor 28.8 N/A Moving mass 0.170 kg. Voice coil length 25 mm. Air gap height 11 mm. X Damage (peak to peak) 40 mm.