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The JBL 2241H low frequency transducer represents the results of JBL's industry-leading engineering research in high power transducer design. The 2241H signified a major advance in speaker design by incorporating JBL's patented Vented Gap Cooling technology in an improved Symmetrical Field Geometry (SFG) magnetic structure.
To increase power handling while reducing power compression, JBL engineers created a unique method called direct voice-coil-to-air heat dissipation (Vented Gap Cooling). This process pumps air through the magnetic gap and directly over and around the voice coil to provide immediate heat transfer and reduction in operating temperature – a direct improvement in power compression.
Through the use of computer-aided magnet optimization and analysis techniques, JBL engineers were able to optimize both magnet weight, ux density and eld saturation resulting in a significant reduction in harmonic distortion. This new magnet structure offers much of the weight advantage of rare earth magnet structures without the higher cost.
With very high thermal power handling, special attention was paid to increased mechanical integrity. A new cone design which greatly improves cone strength allows for increased reliability and longer life. Greater linear excursion for matched power and displacement levels was achieved via a new surround topology and edge damping treatment. The 100 mm (4 in) voice coil benefits from a new winding technique which offers greater thermal stability with increased power handling. All elements of the cone, voice coil and suspension system have been carefuly optimized and controlled to ensure smooth high frequency response. The 2241H is ideally suited for use in touring and fixed sound applications where high SPL and deep bass response are required. Its low distortion and smooth frequency response make the 2241H suitable for critical monitoring applications as well.
Please see .pdf in the manual tab above more info.