I have spent a couple of hours this afternoon playing my new Hartke LH 500 and discovered that the natural sound of my Precision bass sounded more natural through my Ashdown Mag 115 than through my Ashdown 210T. This came as some surprise to me as the 115 does not have a tweeter but there was plenty of natural treble and in my opinion sounded better than when played though my Mag 210T which has a tweeter. It is just that I will be considering getting a better cab in the near future and wondering would I be better off getting a cab without a tweeter.
....or get a cab with adjustable tweeter so that you have more options on different basses. 15"s and P-bass is a match made in heaven.