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About the 2242H
The JBL 2242H is a high-performance 18-inch low frequency transducer designed for professional audio applications, especially ideal for high output subwoofer systems with bass extension down to 25 Hz. It features a 100 mm (4 inch) edgewound aluminum ribbon voice coil and a patented Super Vented Gap (SVG) cooling system that pumps air through the magnetic gap to reduce operating temperature and power compression. The motor structure includes a pole piece extending above and below the top plate to improve magnetic flux symmetry and thermal conductivity. A copper shorting ring embedded in the pole piece reduces third harmonic distortion and voice coil inductance, enhancing transient response. The 2242H can produce peak instantaneous outputs of 134 dB above 100 Hz at one meter, surpassing other JBL low frequency transducers. It has a continuous pink noise power rating of 800 watts, with a frequency response from 25 Hz to 1.6 kHz, and a sensitivity of 99 dB at 1 watt/1 meter. Recommended enclosure volume is 140 to 340 liters (5 to 12 cubic feet). The driver has a maximum peak-to-peak excursion of 50 mm before damage and a minimum impedance of 6.6 ohms. It is no longer manufactured but remains a benchmark for high output, low distortion subwoofer drivers.
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