QSC E115 2Way 500W Passive Loudspeaker - 15"The E115 is a trapezoidal, two way loudspeaker using a 15 inch, 500W, die cast aluminum frame woofer with a 3. 5 inch voice coil. It is intended for use when high power and authoritative low end are needed from a full range loudspeaker. A 2. 8 compression driver attached to the 75 DMTTMwaveguide assures that even distant listeners will be well covered. E Series loudspeakers will perform very well with any quality, professional power amplifier but by