: Set all gain, level, and EQ knobs to zero (or "unity") before powering on to prevent sudden loud feedback or speaker damage.
: Includes a 3-band EQ, master reverb, and level controls. audio choice qm4 manual
: Turn on the mixer first, then any external power amplifiers if used. When shutting down, reverse this order: turn off amplifiers first, then the mixer. : Set all gain, level, and EQ knobs
: Each channel features combination XLR and 1/4" inputs. Channel Controls : Gain, tone, and reverb per channel. When shutting down, reverse this order: turn off
: Adjust the Gain for each channel until you have a strong signal without clipping (distortion), then use the Master Level to control the overall volume. Troubleshooting and Maintenance
: Mixer unit measures approximately 6" H x 18.5" W x 11.5" D and weighs roughly 20.5 lbs. Setup and Operating Instructions
The (often referred to as the Audio Choice by SoundTech QM4 ) is a versatile 4-channel powered mixer designed for portable PA applications like karaoke, DJ sets, band practice, and small room presentations. Audio Choice QM4 Technical Specifications