I greatly appreciate input from all respondents. The guidance was most beneficial.
I recently learned something about the Gallo that is quite important and finalized the cabling. Not only is there a low pass filter that can be changed for crossover point, there is also a high pass filter fixed at 80 Hz. The Focal speakers have a (to me) loose lower bass I often heard with ported designs that thought a bigger orfice meant more bass. The speaker has two ports, both large diameter, one downward firing and the other front firing. When I connected them to the Gallo the bass tightened up and I had effective resolution down to 25Hz per the test tones I downloaded from the Focal site. I thought it was the sub doing its job supplying lower bass, but didn't ask myself where the boomy bass went. Well, now I know. Given this feature I'd be stupid to electrically separate the sub from the speakers. I'm going to unhook the sub and run the speakers straight from the amp, listen to the tone sweeps a few times, then hook the sub back in and do the same listen. It will be interesting to note the difference.
I recently learned something about the Gallo that is quite important and finalized the cabling. Not only is there a low pass filter that can be changed for crossover point, there is also a high pass filter fixed at 80 Hz. The Focal speakers have a (to me) loose lower bass I often heard with ported designs that thought a bigger orfice meant more bass. The speaker has two ports, both large diameter, one downward firing and the other front firing. When I connected them to the Gallo the bass tightened up and I had effective resolution down to 25Hz per the test tones I downloaded from the Focal site. I thought it was the sub doing its job supplying lower bass, but didn't ask myself where the boomy bass went. Well, now I know. Given this feature I'd be stupid to electrically separate the sub from the speakers. I'm going to unhook the sub and run the speakers straight from the amp, listen to the tone sweeps a few times, then hook the sub back in and do the same listen. It will be interesting to note the difference.