Hello!
I have a pair of SongTowers and used to play them with an Onkyo SR805, which I still have but am using an AVA Ultravalve for my serious 2 ch listening.
When I used the Onkyo I would only listen in PURE AUDIO mode, No Audessy. For movies I would use it from time to time.
I used to think the SongTowers were lacking in the bass department but over time I realized that the bass is crisp and accurate, and if its there within the frequency range that the drivers and tuning allow its there and very accurate. No boominess and fullness.
My son once said they sound nice but they dont have that full on body slam bass you can feel in your gut, like some fullrange Mirage M1's I had years ago. I was a little dismayed at his comment, but they are not HT2-TLs...but they do a wondeful job of producing what they can wonderfully.
I have several recordings that I use as a reference and go back to when I think the 'bass' has gone away! ...The new amp has helped in this area, and I find it very hard to go back to the Onkyo for my 2 ch listening.
The finish on your speakers are really very, very nice!! Jim certaintly does fine work!!
All the best
Alex