Professional Extension (PX) Technology

During 2006 we introduced two major upgrades to our products.  The first one applies to the upgrade of our conventional audiophile products and the second one is the latest upgrade on new products, which includes the technology used in our professional products.
     The first upgrade includes new stator assemblies that uses heat-setting insulation on the stators and a 30% increase in the number of stator wires.
     The former innovation greatly increases the reliability of the product, while the latter increases the efficiency of the speakers.  A new mounting technique provides a cushion mount for the stators in the panel frame, which eliminates much of the stress on the insulation due to the rigors of handling in shipping.  Also, a new micro-thin teflon-based coating on the membrane eliminates fatigue due to continual high-level signals with the resulting large membrane excursions.  These technical updates provide a significant improvement in both performance and reliability, which is crucial in meeting the greater demands of higher listening levels.
     The second upgrade employs our new professional PX (professional extension) technology that provides a further increase in electrostatic panel performance and reliability.  In this technology, the stators have a lattice backing to increase the rigidity of the stators.  The reason for this is that under high driving conditions, the reactive force on the stator wires can cause them to move slightly toward and away from the membrane in sync with the applied signal.  This causes a small consequential loss of transduction efficiency and can introduce unwanted resonances.  This lattice "backbone" effectively eliminates stator wire movement and thus provides the maximum panel efficiency while eliminating resonance.  The stator wire insulation uses an irradiated cross-linked material that provides the most physically and electrically rugged material available.
     The increased thickness of the stators, due to the lattice backbone, requires a panel frame that is designed to accommodate it.  As a result, this update cannot be applied to our previous panel frames.
     Furthermore, the PX panel frame designed for the new stators is stronger and stiffer than the previous panel frames.  This is due to the newly introduced mechanical interlocking of frame members along with using steel screw fasteners to secure the members together.  This is in addition to the previous standard of adhesive and staples.  In addition, the teflon-coated membrane, developed for the PX technology, is used.  The PX panels are designed to meet the greater demands of commercial and professional sound applications.
     The PX technology has increased the performance and reliability of our products.  The response from customers who have replaced the standard panels with PX panels has been very positive.  The PX technology is more expensive to manufacture, so the standard technology has been continued as it has a price advantage for those not interested in the new PX technology.