Controls the overall depth of the reverb effect applied to the mix. 3. Rear Panel Connections and Features
Determines how much of the internal reverb effect is applied to that specific channel. Master Section The master section controls the overall output of the QM4.
The is a rugged, vintage 4-channel powered PA mixer head engineered for live performance, small venues, rehearsal spaces, and karaoke. Delivering 100 watts of power , it provides a highly reliable, all-in-one solution for mixing multiple vocal microphones and instruments.
The engineered primarily for gigging musicians, mobile DJs, karaoke hosts, and small-venue sound reinforcement. If you have acquired this classic analog workhorse without its original documentation, navigating its front and rear panel operations is essential to optimizing your live sound. This comprehensive operational guide serves as a manual to help you configure inputs, balance frequencies, manage power outputs, and troubleshoot your system safely. Hardware Overview & Front Panel Layout audio choice qm4 manual
: If the mixer was subjected to a sudden power surge or incorrect speaker impedance, the internal fuse may have blown. Disconnect the AC power cord entirely before opening the chassis. Locate the glass fuse on the power supply rail and replace it only with a fuse of the exact same amperage and voltage rating. 2. Audio is Silent but Power Light is On
The Master section located on the right side of the PA head aggregates all inputs and distributes power efficiently to your speaker enclosures.
Keep performers directly behind the rear dead-zone of directional microphones. Controls the overall depth of the reverb effect
| Parameter | Value | |-----------|-------| | Output power | 5W – 10W (depending on version) | | Frequency response | 80Hz – 18kHz | | Battery capacity | 1200mAh – 2000mAh Li-ion | | Playtime (mid volume) | 4 – 8 hours | | Charging time | 2 – 3 hours | | Bluetooth version | 5.0 (or 4.2) | | Supported formats | MP3, WAV, WMA | | Dimensions | Approx. 180 x 70 x 70 mm | | Weight | Approx. 350g |
: Use the 3-band EQ in the master section to shape the overall sound and the individual channel Tone knobs for specific sources. Troubleshooting Tips
The AudioChoice QM4 is a 4-channel powered mixer amplifier, produced by SoundTech for their 'AudioChoice' line. This compact PA head is designed to provide a straightforward, all-in-one solution for small venues, rehearsal spaces, karaoke setups, and basic public address applications. Master Section The master section controls the overall
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.
often hosts listings for the SoundTech QM4, including full portable PA sets with original speakers and cables. For parts or used professional audio gear,
Place the unit on a shelf or wall-mount it using the provided bracket. Note: Ensure at least
The Audio Choice QM4 Go to product viewer dialog for this item.