Electro Voice's ETX-15SP 15" 1800W Powered Speaker is a portable powered Class-D subwoofer with a peak SPL of 134dB and up to 1800 watts of output power. It contains an adjustable low-pass filter with settings for 80, 100, 120, and 150 Hz. FIR-Drive DSP is included into the subwoofer, with a setting for accurate cardioid output across its frequency. Its combo pole cup accepts both insert and threaded inputs, making it compatible with a wide range of loudspeakers. For easy transportation, there are four removable casters provided along with the speaker.
High-Sensitivity, Low-Distortion Transducer Design
Electro Voice focuses on designing transducers with linear frequency response in order to reduce the need for additional equalisation. Faraday rings are used in all the ETX woofers to enhance vocal reproduction. The woofers not only have a high power handling capacity, but also a sturdy mechanical design that ensures long-term reliability
Components and Testing
Electro-Voice produces all ETX components from the ground up. There are no off-the-shelf components being used. The handles, pole cups, and amplifier chassis are made of die-cast aluminium rather than plastic. ETX uses 18mm, 13-ply birch plywood with EVCoat across the whole product line. All models must pass EV's proprietary 1,000-hour torture test, which uses real-world signals driven beyond full output in addition to industry-standard pink noise abuse tests.
Processing and Control
System DSP presets support quick and easy setup by choosing the type of use, crossover frequency, and top / sub combination. The DSP presets also including the "true cardioid" configurations. ETX uses the same proprietary PAL and TEMP limiters developed for Electro Voice concert speakers. By having a border correction filter included, the sound of ETX speakers will be the same whether used as a floor monitor, on a tripod, or hung from the ceiling. ETX provides user-adjustable features such as delays of up to hundreds of feet, 3-band parametric equalization, polarity, and multiple high-pass crossover points. The Class D design of the amplifier is designed for efficiency and features fan-controlled thermal management that allows it to operate in high temperature environments. The fan is designed to be quiet and will not turn on under normal circumstances. Lockdown mode prevents casual users from changing settings
Complete full-function DSP control via a single-knob interface. LCD screen for easy and simple system set-up and monitoring such as location/application EQ presets, limiter status, input level controls/meters and master volume control to ensure optimal gain structure.