Reference strada one or two subs?

Really helpful. Thanks. Assuming its a linear scale and starting at 30 and ending at 180hz then a crossover around 12:30 should equate to something like 110hz or so it seems. My rel goes up to 120hz so I may try that first. Currently it's set around 80. Also see a tr3 locally that I may pickup and experiment with. Thanks again for the help.

You're welcome. I think you're right about the 110 Hz, or thereabouts. Be sure to check out that TR-3 before buying it. I had QC problems with a couple. Good luck.

Many thanks for the warning on qc issues. I will look and test carefully for sure.

Just posting some followup. I raised my cutoff to 110hz and repositioned my sub right center and properly coupled it to the floor beneath the carpet using spikes. Also moved the right strada into the corner, approx 1 foot from the back wall and 1.5 feet from the side wall. Wow! Much better integration. Bass is improved on the strada and bass from the t1 is just subtly less boomy. The combination is awesome! No doubt I'm going to go for a second t1 for the left side. Just wondering if anyone has had any luck getting a better floor coupling with their strada floor stands? The spikes don't work that well for carpet and they still seem to rock a bit.

I replaced the original spikes with "carpet penetrating CP1
Bearpaws" (their name) from a company called edenSound
(edensoundaudio.com). I had them drilled for 1/4" x 20 studs. Only
problems are (1) the studs go into the Gallo stands only about one-quarter
inch, (2) the studs are only 3/4" long, so shearing them is a potential
problem, and (3) they still rock a little because the footprint of the stands
isn't that large. But they do an excellent job of reducing resonances I used to
be able to feel by touching the stands. They couple better and they look cool
:-)

Total cost for 6 of these brass spikes incl. shipping was something like $240.