We have three Sena units: two SRLs fitted to Shoei Neotec helmets and one 50C. The issue is that the rider volume on the 50C is significantly louder than on the SRLs.

If we set the volume on the two SRL units to a level where the riders can hear each other comfortably, the 50C rider's audio is painfully loud. However, if we reduce the volume to a comfortable level for the 50C user, the audio becomes too quiet for the SRL users to hear.

Is there a way to balance the intercom volume levels between the different units?