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Morgan BerryJul 26, 2025
What to do if speaker audio is not heard on my Standard Horizon HX400 Marine Radio?
- YYvonne JacksonJul 26, 2025
If you cannot hear speaker audio when pressing and holding the key on your Standard Horizon Marine Radio, there are a couple of things to check: * First, ensure that the battery has sufficient charge. If the battery is low, charge it. * Second, verify that the audio volume isn't set too low. Turn the VOL knob clockwise to increase the volume.
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