The NEOS PX HIGH-PERFORMANCE models provide the highest level of performance and are intended for the use in the most demanding applications. To achieve this goal, particular care has been taken in the choice of the transducers that employ the most sophisticated technical solutions and advanced construction methods available today. The NEOS215PX and NEOS218PX sub-woofers are designed to be the perfect complement for the NEOS122PX and NEOS152PX and they are designed using the same high standards. Each model employs two woofers, 15” with 3” VC in the NEOS215 and 18” with 4” VC in the NEOS218, offering the latest in transducer technology: - die-cast baskets with double ventilation for an efficient heat dissipation - ISV (Interleaved Sandwich Voice Coil) for reducing the VC temperature and the power compression - DSS (Double Silicon Spider) suspension providing a controlled linearity - DDR double demodulating rings for a reduced harmonic and intermodulation distortion. The enclosures use an innovative design that offers the advantages of two classic configurations: the high output level and dispersion control of a horn-loaded system plus the damping and deep bass of a bass-reflex system with a symmetrical, exponential-profile tuning port. The cabinets are made with 18 mm birch plywood and are equipped with sturdy rear wheels to facilitate transport. All the HIGH-PERFORMANCE passive models can be filtered and controlled using PROEL PC260 digital processor.