Gemini GSP 2200 Series – Mixer & Input Troubleshooting

The GSP 2200 Series speakers feature a built-in 3-channel mixer with multiple input options, including XLR, 1/4", RCA, and 1/8" AUX. If you're experiencing issues with sound input or mixer controls, this guide provides targeted solutions.

No Sound from Microphone or Instrument

Quick Fix:

• Confirm the speaker is powered on and connected to AC power.
• Make sure the microphone or instrument is securely plugged into the correct input (XLR or 1/4").
• Set the input selector to the correct mode (Mic or Line).
• Adjust the corresponding channel gain knob and master volume.
• Check the Clip LED—if it’s flashing, reduce gain to avoid distortion.

AUX or RCA Input Not Working

Quick Fix:

• Ensure the source device is powered on and playing audio.
• Confirm the cable is fully inserted into the AUX (1/8") or RCA jacks.
• Adjust the volume knob for the channel assigned to that input.
• Try a different cable or device to rule out hardware issues.

USB or SD Playback Not Responding

Quick Fix:

• Press the MODE button until the speaker enters USB/SD mode.
• Ensure the USB or SD device is formatted to FAT32 and contains supported audio files.
• Use the Play/Pause, Back, and Forward buttons to control playback.
• If the device isn’t recognized, try reinserting it or using a different port.

Mixer Controls Not Responding

Quick Fix:

• Check that all channel volume knobs are turned up.
• Use the Bass and Treble EQ knobs to adjust tone.
• If no sound is coming from any input, try switching to a different input type.
• Inspect the Mix Out (XLR) connection if using external speakers.

FM Radio Not Working

Quick Fix:

• Press the MODE button to cycle to FM mode.
• Use the Forward and Back buttons to scan for stations.
• Ensure the speaker is in an area with good reception.

Clip LED Flashing Constantly

Quick Fix:

• Reduce the gain on the active channel.
• Lower the master volume.
• Avoid overdriving the input signal from external devices.

Need More Help?

If you’ve tried the steps above and still need assistance, contact Gemini Support:

Phone: 732-346-0061
Email: support@geminisound.com
Live Chat: www.geminisound.com