Hi Joes
I tune a lot of Apogee, and use to tune up rooms as reviewers were doing their thing. In doing so I discovered a bass trick. What is in the upper corners of your room? If nothing you should consider tuning them with the CornerTunes. The Apogee rely on low end pressure more than a lot of speakers and they can gas out the amp easy. The upper corners in the room seem to be especially sensitive when using your speakers. You might be surprised to find all kinds of extra energy for the Calipers. I had a lot of fun with them in the past.
good luck
Michael Green