Roughly 70% of the JFX Series design engineering effort went into the transducers. With new resources and cooperative vendors, EAW engineers had almost complete control over the designs. Many of the drivers underwent dozens of iterations where A/B evaluations revealed subtle differences between various voice coil types, former constructions, spider materials, cone treatments, motor assemblies and surround materials; in a word, everything. Extensive listening tests as well as technical measurements determined the final outcome.

The resulting systems can be driven harder for a longer period without fatigue. Differences becomemost apparent at the very high operating levels that typify normal use of these loudspeakers. The following examples represent only a portion of this major engineering effort.

Except for the JFX88, all HF compression drivers share a similar design. They use a highly damped titanium diaphragm for more accurate HF reproduction.Neodymium magnets provide equal or higher performance than ceramics for reduced distortion and extended response while significantly reducing transducer weight.

With the 15 in woofer, engineers paid special attention to the cone, surround, coil, suspension and magnet structure geometry. The cone is fiberglass-filled for outstanding rigidity and has a water protective treatment. The 4 in copper clad aluminum (CCA) coil with full-length, inside/outside winding increases power handling and maximizes linear travel for extended LF output. The magnet structure's T-pole design features an aluminum induction ring for minimal distortion. This is the same technique used in another manufacturer's 15 in woofer that costs $800, more than some of the smaller JFX systems.

For the 10 in woofer, a 3 in copper voice coil with its inherently lower inductance proved best, while the filled and treated cone design was carried through. Each of the four woofers received this high level of scrutiny and the results prove the benefits.