I called Valentine today and was advised to try a different cord. I will do so, but strongly suspect that ain't the problem. Here's the setup and symptoms:
V1 using hardwire adapter wired to the battery of my motorcycle and the Remote Audio Adapter plugged into the Acc port on the hardwire adapter. Main volume on remote set to about 12 o'clock; mute lever set full counterclockwise. Earphones plugged into the audio adapter.
Strong Ka or K alert produces one or two braps at main volume level, then goes to mute level without any button being pushed and then alternates randomly between mute and main levels. Or sometimes it starts out with the first braps muted, then randomly plays occasional ones during the duration of the incident at main volume.
Pressing mute on either the V1 or the remote audio box seems to have no effect at all on this.
The main unit has never acted oddly or failed to mute correctly in my car, where I do not use the Remote Audio Adapter.
All programming is factory default and this weird behavior takes place using either A or little-L logic modes.
Any ideas, guys? I can't afford to miss the beginning of any Ka alerts while on 2 wheels [g].