Electro-Voice EVX-155 Speaker
The EVX-155 low-frequency speaker is designed for professional sound reinforcement or studio monitoring applications that require maximum output with low distortion.

The EVX-155 woofer provides unprecedented power capacity, linearity, and excursion, made possible by the HeatWick total- thermal-engineering design. This takes heat away form the voice coil, significantly increasing power handling and long term reliability. Also, the 100mm (4-in.) diameter voice coil is longer than those on conventional medium-efficiency woofers to give additional power handling and virtually eliminate dynamic-range power compression.

Additionally, a Flux Demodulation Device (FDD) reduces distortion in the critical mid-band by providing a "short circuit" effect to prevent amplifier-signal modulation or the static magnetic field.

A ribbed, Kevlar fiber composite cone with an extremely high stiffness-to-weight ratio and exceptional strength give the EVX155 increased resistance to cone collapse and deformation, without sacrificing efficiency.