Acus Stage Sub 500 Wood, subwoofer for the expansion of the Stage and ONE-Series, 500W, 1x 10" bass speaker, stereo crossover with balanced XLR input L/R, direct out L/R, sat out L/R, switches for: 90Hz/140Hz, mono-stereo, 0°/180° phase, volume control, ground lift, material: plywood, weight: 16kg, color: wood