#3 How do you fix distorted sound from the KEF Q650c speaker?
Check the audio source – Try a different song, movie, or device to rule out a bad signal.
Use a proper amplifier – Ensure your amp delivers 15–150 W per channel @ 8 Ω; weak amps can cause clipping.
Inspect speaker cables – Clean terminals, secure connections, and match positive/negative correctly.
Adjust placement – Keep the speaker 20–30 cm away from walls and avoid placing it inside closed cabinets.
Reset EQ and crossover – Set crossover at 80 Hz and keep EQ flat to prevent overloading.
Check for driver damage – If distortion remains, the cone or tweeter may be faulty; contact KEF service.
In short: Verify your signal, amp power, wiring, and placement first — then fine-tune EQ or have the speaker inspected if the issue persists.