Electro-voice ekx-15s passive subwoofer based on the electro-voice ekx-15s datasheet:
audio performance
power handling: 400 watts continuous (rms) / 1600 watts peak
maximum spl: 133 db (calculated peak at 1 meter using broadband)
frequency response (-3 db): 60 hz – 100 hz (measured in half-space)
frequency range (-10 db): 40 hz – 300 hz (measured in half-space)
axial sensitivity: 95 db
recommended high-pass frequency: 35 hz
electro-voice
components & impedance
lf transducer: evs-15c 381 mm (15-inch) woofer
nominal impedance: 8 ohms
minimum impedance: 7.5 ohms
electro-voice
physical & hardware
connectors: dual speakon nl4 ports (input and link output)
enclosure material: 15 mm plywood with a durable evcoat finish
grille: 18 awg steel with a powdercoat finish and metal reinforcement bar
mounting: m20 threaded pole mount plate