Galls ST160 User Manual (English)

Questions and Answers:

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Sarah OrtizJul 30, 2025
Why is the siren tone not working on my Galls Amplifier, but the PA does?
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  Eric GordonJul 30, 2025
  If your Galls Amplifier siren tone isn't working while the PA system is functional, several factors could be at play. The input voltage may be outside the acceptable range: it needs to be less than 16 volts and greater than 10V when the siren is on. Check if the microphone button is stuck. Make sure the Park Kill jumper option is correctly configured, and test if the siren works when the Park Kill input is disconnected. Finally, examine the speaker and its wiring for shorts or opens.
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Briana ClineAug 3, 2025
What to do if my Galls ST160 Amplifier siren sound is distorted?
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  ataylorAug 3, 2025
  If the siren sound from your Galls Amplifier is distorted, check the following: ensure the speaker bell or tip is not loose. If you're using the Aux Input, verify it's wired correctly. Also, the vehicle voltage needs to be between 10 and 16 volts while the siren is active.
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Victoria ChandlerAug 7, 2025
Why does my Galls ST160 Amplifier have an intermittent siren tone?
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  Lisa WeaverAug 8, 2025
  If you're experiencing an intermittent siren tone with your Galls Amplifier, consider these potential causes: The vehicle voltage regulator may not be working correctly, or the input voltage may be outside the required range (greater than 10V when the siren is on). Ensure nothing is pressing on the microphone. Verify that the circuit breaker used has at least a 50A rating. Check the speaker and its wiring for water damage or pinched wires.
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benjaminlauraAug 12, 2025
How to troubleshoot a Galls Amplifier that has no power?
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  Eric RodriguezAug 12, 2025
  If your Galls Amplifier has no power, verify the following: Ensure the yellow wire is connected to a switched +12VDC source. Check the connector for any looseness. Determine if the Siren 15A fuse is blown, which could indicate that the power is hooked up backwards. Confirm that the negative leads are connected to a good ground and that there are no loose connections at the power source.
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Jerry WallerAug 17, 2025
What to do if my Galls Amplifier has no radio or low radio volume?
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  Sharon JonesAug 17, 2025
  If the radio is not working or has low volume on your Galls Amplifier, make sure the radio is properly connected to the unit. Also, check if the radio volume is set too low. Ensure the radio wires are connected to the correct polarity from the radio output and that the radio outputs are isolated.
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Nicholas FisherAug 21, 2025
Why is the horn, manual, or thunder function stuck on my Galls Amplifier?
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  Jacqueline KingAug 21, 2025
  If the horn, manual, or thunder function is stuck on your Galls Amplifier, check if the Manual/Horn rocker switch returns fully when released. If you're using the Aux Input, verify it's wired correctly. Also, ensure the AUX jumper option is properly configured.
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Darren SchwartzAug 25, 2025
Why is my Galls ST160 producing the wrong siren tone?
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  jordanjaimeAug 26, 2025
  If your Galls Amplifier is producing the wrong siren tone, verify that the TT jumper option is properly configured. Also, check if the AUX jumper option is configured properly, as the Aux Input may be set to the wrong function.