Audio Choice Qm4 Manual [better] Site

: If you hear static or other voices, use the Set Button to switch all components to a different channel (A, B, C, or D) to find a clearer frequency.

The unit contains no user-serviceable parts. If the master EQ becomes "scratchy" over time, it may require professional cleaning of the internal potentiometers. QM4 AND QS4 Instruction Manual - TDK Product Center

Gradually increase that channel's to blend the signal into the master effects trail. Balancing Room Acoustics via Master EQ

: Controls the input level of the specific channel. audio choice qm4 manual

⚠️ Warning: Never connect two 4-ohm speakers simultaneously. This creates a combined 2-ohm load, causing the amplifier to overheat, trip its thermal protection, or permanently blow the internal fuse. 🛑 Troubleshooting & Maintenance Audio Choice QM4

: Each channel features an XLR microphone input and a balanced/unbalanced 1/4-inch Line input jack . Do not connect sources to both inputs on the same channel simultaneously.

: Ensure you are using unshielded speaker cables , not shielded instrument/guitar cables, to connect the head to the enclosures. 3. Scratchy Noises When Turning Knobs : If you hear static or other voices,

Plug the hardwired AC cable into a grounded wall outlet. Flip the power toggle switch to the "On" position. The front-panel indicator LED should illuminate. Step 5: Gain Staging Plug your source device or microphone into Channel 1.

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Unlike modern all-digital mixers, the QM4 offers a simple, tactile interface with dedicated knobs for every function—a design that many users find practical and immediate for live sound situations. QM4 AND QS4 Instruction Manual - TDK Product

: An unbalanced high-impedance input optimized for line-level gear, such as keyboards, acoustic guitars, and external media players.

Use standard 1/4" speaker cables to connect to passive enclosures. The system was originally bundled with 2x10" enclosures.