VIBE Alpha 1 MK2 Subwoofer - Black - Auto On / Off 0 / 180' Phase Control Frequency and Volume Controls Spike Feet / Rubber Feet H x W x D (mm): 315 x 315 x 350 Driver: 1 x 10" VIBE BlackAir Enclosure Type: Sealed Nominal Power: 200W RMS Signal to Noise: 100dB Frequency response: 40