I have the Delphi Skyfi XM Radio that I can move between home,car, & plane…works great except it would be nice if I could adjust the volume in the plane slightly louder. Adjusting the Line-Out volume on the Delphi helps a little but are there any other simple ways to increase the volume?
There has been extensive discussion of this topic - it’s an impedence mismatch that can be corrected by purchasing various items from Radio Shack or building a simple matching transformer equipped patch cable. Try searching the forums for the past year or so with ‘volume’ and ‘music’ and you’ll find the threads.
Tim