features four independent channels, allowing you to connect various audio sources:
[Audio Sources: Mics/Keys] ---> [QM4 Mixer Head Inputs] | (Internal 100W Amp) | v [Passive PA Speakers] Step 1: Physical Placement Place the QM4 on a clean, stable, flat surface.
: Confirm that the Master Volume knob is turned down completely. Plug the power chord into a grounded AC outlet. Flick the power switch on; the front-panel LED power indicator should illuminate. Channel Strip and Input Controls The front panel of the Audio Choice QM4 Go to product viewer dialog for this item.
The amplifier supports both low-impedance speakers (direct connection of a few speakers) and high-impedance distributed systems.
You have three options:
provides 100 watts of power at 4 ohms across a highly intuitive, portable four-channel layout.
The main volume fader for the 100-watt power amplifier.
The Audio Choice QM4 is a versatile and high-performance audio amplifier. By following this guide, you'll be able to understand its features and operations, ensuring a great listening experience.
Core controls (common, concise)
To help find additional historical data or parts for this vintage PA system, what or microphones are you trying to connect to it? I can also provide a detailed guide on how to safely hook up a modern smartphone, tablet, or Bluetooth receiver to one of its channels. AI responses may include mistakes. Learn more Share public link
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: Ensure all equipment is sharing a common ground loop circuit. Try using a DI (Direct Input) box with a ground-lift switch for ungrounded external gear like instruments or laptops. Key Technical Maintenance Because the SoundTech QM4
Each channel allows for a combination of XLR and 1/4" input, handling microphones and instruments. audio choice qm4 manual
The AudioChoice QM4 powered mixer represents an era of simple, reliable, and accessible live sound reinforcement. Its core design—four flexible input channels, an integrated 100-watt power amplifier, and comprehensive master controls—was built to serve musicians, presenters, and small venues effectively. By following this manual, you will be able to maximize the potential of your QM4 and keep it working for years to come.
blends an analog layout with built-in spring reverb and master tone equalization.
Raise individual channel levels until the desired volume is reached.
Use the Line Out jack to send an unamplified, mixed audio signal to an external recording deck, a secondary monitoring system, or an active subwoofer unit. Maintenance & Troubleshooting features four independent channels, allowing you to connect
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