I’m looking at the RSL and the T7x and I’m undecided, I think the only thing to do is purchase the two and compare myself.
Rsl subwoofer
Just received the latest Speedwoofer 10s from RSL and I’m very impressed. It mates exceptionally well with my Omega 3xrs speakers and adds the foundation I wanted , without interfering with the midrange and treble. The Omegas are exceptionally fast and the Speedwoofer is equal to the task. I had demoed a Rel 7x but that was only used for a couple hours with a set amp (different than the Belles amp/preamp combo used for the RSL) which doesn’t make a fair head to head comparison. I do think the value is outstanding for the speedwoofer 10s, to say I like it is an understatement .