EON G2 White Paper

Introduction

In 1995 JBL introduced the EON Series of powered speakers. This breakthrough speaker line launched an entirely new concept of speakers, incorporating consumer ease of use into a package that was lightweight and powerful with excellent sound. In addition, innovative material selection and manufacturing techniques established a new benchmark for cost/ performance. The first generation of EON products became the all time best selling powered sound reinforcement speaker system with over 300,000 sold.

EON G2, the second generation of EON builds on the technological innovation of EON. Let's take a brief look at some of the technologies that have made EON the success it is.

Low Frequency Innovations

When JBL engineers tackled the development of a portable powered speaker system it became clear that simply repackaging conventional amplifier and transducer technology would not yield the desired performance and reliability. A conventional low-frequency driver with the motor strength required could weigh nearly 20 pounds (9 kg.). Since this was nearly half the total weight budget for the EON15P, a new approach was taken.

The result is JBL's exclusive neodymium Differential Drive® transducer. The use of neodymium as a magnetic material in speakers will produce benefits even when used in an otherwise conventional design. Neodymium is magnetically "stiffer" and hence suffers less from flux modulation with a resulting decrease in harmonic distortion. In addition, neodymium delivers more magnetic strength than conventional materials so less of it is needed resulting in weight reduction.

JBL combined neodymium with the Differential Drive speaker. The Differential Drive system uses two voice-coil windings on a single voice-coil former. This greatly simplifies the magnetic circuit and eliminates the need for a heavy steel back plate - further reducing speaker weight. But the benefits of neodymium Differential Drive® technology extend beyond weight reduction. Since this design results in a symmetrical magnetic circuit, significant reductions in even-order harmonic-distortion are achieved.

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