I have 2 XM5800 in hand and I have updated one of them to v30 and right after the update I noted the music is almost without bass at all so I compared the speakers with the same song and and the conclusion is:
v21 speakers are MUCH stronger and have MUCH more bass, in v30 thay really took out all the bass and volume from it and that is REALLY disappointing!
Even after playing with the EQ, v30 doesn't get close to v21 in terms of bass and volume.
So maybe someone could find a way to return the speakers to what is was at v21 (without downgrading to v21..)?
anyone knows which files are responsible on the speakers sound?