English Installation and Operating Guide Page 35
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Problem Possible Solution
Buzz or hum noise • If there are multiple high-power devices connected to the same AC circuit, disconnect
some of them or connect the SP-24 sound processor to a different circuit.
• Plug the power cord for the SP-24 sound processor as close as possible to the source and
output device (amplifier or powered loudspeaker).
• Use balanced cables and connections.
• Physically separate audio cables from the power cables.
• Try a different audio source.
• Replace the cables connecting the source (i.e., the mixer and signal processors), amp, and
speakers to the SP-24 sound processor.
• Use a line tester to verify that the power outlets and power extensions (if used) are properly
grounded.
• Use an inline XLR ground lift on the affected channels.
USB device not recognized • Ensure your computer meets the minimum requirements.
• Use the supplied USB cable.
• Remove any USB extension cables or USB hubs between the PC and the SP-24 sound
processor.
• Undock PC from docking station – use USB connection directly to PC.
• Reinstall the SP-24 Editor software.
• Unplug any other USB-based devices.
• Disconnect and reconnect the USB cable at both ends.
• Try another USB connector on the computer.
• Disconnect the USB cable, power cycle both the SP-24 sound processor and PC.
Reconnect cable and turn on devices.
Front panel control offers limited
programmability
• Use the SP-24 Editor software to make full-featured adjustments. Store this custom
configuration to the SP-24 sound processor as a Custom Scene.
Settings not retained • Be sure to press the SELECT/LOAD button on the desired Preset, Custom Scene, or
Utility Menu parameter to save the selection.
Pop is heard when powering on • Power on the external amplifier/powered loudspeaker after powering on the source device
and the SP-24 sound processor.
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