Whether you‘re a musician taking the stage or a DJ packing the dance floor, deliver powerful, clear sound with the Thump15v4 professional loudspeaker featuring SoundCheck DSP. Mackie Thump15v4 professional powered loudspeakers are the loudest, lowest and clearest everyday gigging solution for any live sound user of any experience level, combining 130 dB maximum SPL, 41 Hz low frequency response and SoundCheck DSP digital signal processing.Lowest. Clearest.Delivers 1400W Class-D amplification for high-efficiency output, paired with a 15 inch low-frequency driver and 1 inch custom compression driver, achieving up to 130 dB maximum SPL and deep bass response down to 41 Hz for powerful full-range sound.SoundCheck DSP Voicing ModesOne-touch selectable modes include Flat Mode for neutral sound, DJ Mode for music playback, Live Mode for speech, karaoke, and events, and Wedge Mode for stage monitoring performance optimization.DSP Instant Setup ToolsBuilt-in processing includes Feedback Eliminator to prevent microphone feedback, Music Ducking to automatically lower music when speaking, and Outdoor Mode to compensate for high-frequency loss in open-air environments.Built-In Mixer with Full I/O ControlDual XLR/TRS combo inputs on both channels, mic/line switch on channel 1, 1/8 inch aux input on channel 2, XLR mix output with Bluetooth pass-through, and front-panel LED on/off control for flexible connectivity.Bluetooth Streaming, Linking & App ControlWireless streaming from mobile devices with stereo linking for dual speaker setups (stereo, zone, or dual mono), simultaneous analog and Bluetooth operation with XLR output pass-through, plus full system control and EQ adjustment via Thump Connect 2 app.