I have been using the freewire for several months - here are my thoughts.
Volume Level - While the volume could be higher it is sufficient in most cases. I notice I have to run the bike level at about 15 to achieve sufficient volume - with the wired headsets I was good with 7-8 on the bike.
Using the Bike Intercom - While you can have one person using a 20s and one person using a wired headset, this configuration is really not usable. First, There is a delay that comes back to the person using the 20s that is really distracting - also, the volume level is totally mismatched in this configuration. The person using the wired headset is blasted and the person using the 20s can't hardly hear the person using the wired headset...
CB - I had Larry M from this forum work on my CB. He peaked the modulation in my CB. It seems that using the freewire to talk on the CB causes the CB to now be over modulated. I have not been able to spend much time looking at this problem as my CB was destroyed as the result of a fire I had on the bike.
WAWingGuy, thanks for your response. It is exactly what I was looking for. It came in while I was typing my previous response.
First, sorry for the fire damage. I would suggest replacing the CB with the BikeMP3 unit, but it is unclear whether they are still in business. Hopefully damage to the tupperware was minimal. Replacing electrical connectors will probably be the most difficult part of your repairs.
I would not ride 2-up with one person on a wired headset so that is not a problem. However, it is an important concern for others who may find themselves in that situation.
I can live with setting the volume at 15. That is a reasonable level to run the speakers at without excessive distortion. I would turn the volume up a bit more than that when I am in traffic, anyway.
Overmodulation on the CB is an indication that the audio output from the Freewire to the CB is too high. That can be resolved with two resistors making a voltage divider. But it would be nice if the Freewire did not require kludges to work properly. Perhaps Sena will address the problem in one of their updates.
This gives me a better picture of the Freewire's capabilities and limitations. Again, thank you for your response.