- Mackie Thump 212 - active loudspeaker; 12" high-power woofer; 1" polymer compression driver; 1400W Class-D power; road-ready design; maximum level 128 dB; frequency response 47 Hz - 23 kHz; inputs and outputs: Channel 1 with XLR/TRS combo input for mic and line signals, Channel 2 with XLR/TRS combo line input and stereo minijack, Thru output with mix of both channels; built-in feedback eliminator, music ducking (automatically reduces level on Channel 2 when Channel 1 receives signal); angled on two sides for use as stage monitor; suitable for standard stands; dimensions 615 x 359 x 355 mm; weight: 13.2kg; color: black