With the Professional Series 4344MkII Loudspeakers, JBL
combines the most advanced technology with a classic JBL design. These speakers continue the longstanding tradition of precise studio monitor sound for which JBL is famous. You will enjoy the benefits of a 2" high- frequency compression driver, cast frame low-frequency transducers with vented pole pieces, and JBL’s proprietary Symmetrical Field Geometry magnet design, as well as high definition dividing networks incorporating the highest quality electronic components available.
Low-Frequency Transducer
The 4344MkII features an all-new 15" (381mm) low-frequency transducer developed specifically for the 4344MkII. Derived from JBL’s legacy of highly powerful yet efficient bass drivers, this woofer delivers full low-frequency performance with clarity and speed unprecedented among 15" drivers. The voice coil is 4" (102mm) in diameter and wound on edge from flat aluminum ribbon wire on a thermoset composite™ form.
The cone is a rigid paper composite, treated with Aquaplas™ for strength, speed, and damping. JBL’s Symmetrical Field Geometry is employed in the form of an aluminum sleeve around the pole piece. This sleeve reduces second-order distortion through induced flux control. Its aluminum composition is also a more efficient conductor of heat, so it assists in dissipating heat away from the voice coil to extend the power capacity. Cooling of the voice coil is further enhanced by the use of a vented pole piece. The rigid frame is cast from aluminum alloy, an excellent thermal conductor, which further acts to efficiently draw heat away from the voice coil and magnet assembly. This combination of advanced design technology results in a bass driver that is remarkably free from dynamic restriction due to heat buildup.
