Gallo Classico Subwoofers

No experience with the classico. I have a gallo trd3 supporting tannoy speakers and previously tekton speakers in a large room (30x45). I find it musical and fast and it adds some weight and texture and blends easily with my system. In my room it doesn't hit you in the chest with power - this may not really happen until you move to larger drivers such as 14-15 inches, but that was not my goal. I like that the crossover is adjustable, as is the +db levels, and overall volume - this helps ensure it works with your system in your room. I wouldnt buy a sub without that type of ability to make adjustments. Happy overall with it. 

I’ve been thinking about getting the 10" sub. I have the Gallo Classico 3 floorstanders and I can tell you that the bass and overall sound is very musical, fast, and tight. So, I’m sure the subs are voiced the same way.

For Rock, my Classico’s bass is deep and tight, but for Classical I feel I’m missing the lowest octave on some recordings and I’m sure the sub would fill this area nicely. As I said, the drivers, are very musical.

The sub is not a true transmission line, but Gallo’s design pushes air thru the cabinet to get a big sound out of a small cabinet.
I like that the sub has a +3dB or +6dB bass boost, they call it bass EQ. If you have small room, a pair of the 10" subs will do (300 watts).
BTW, Underwood Wally is having a sale.

Honestly Underwood's sale is the only reason why I'm looking at these at all.  I was/am having a hard time making up my mind between one HSU ULS 15 and two SVS SB1000.  The pair of Gallos come in around the same price.  

I'll second the opinion on the tr3d. I recently replaced my ML Ascents and an old velodyne uld-15 with a pair of Gallo Strada 2's and the tr3d and found it to be excellent.  Very musical and more "oomph" then I need in my environment.  Won't miss the ULD at all.  Plus the Gallo is so tiny I am amazed by its performance.