Only caveat is if you're using an Audio Research tube amp. ARC has its own, slightly different, recommended configuration for driving full-range speakers & a sub from the same outputs.
Sub Wiring
I currently run separate speaker wire from my amp (Luxman L-590AXll) to each of my stereo subs (Hsu ULS-15 Mkll). I use the same binding posts to run my speaker wires in what I guess would be considered shotgun fashion. A fellow audiophile told me he just piggybacks off of his speaker binding posts to each sub in his system.
I hadn’t thought of doing that, but it seems reasonable- less wire in my living space, and less chance of RFI being picked up along the way. I should add that the run from amp to speakers/subs is long- about 23 feet. My subs are within two feet of each speaker (Spatial Audio M3 Turbo S).
I am extraordinarily happy with the sound I’m getting, and this is really more of an aesthetic/RFI concern question. I’ll throw in that I wonder if electically this different hookup presents a different load to the amplifier?
This may fall into the “if it ain’t broke, don’t fix it” category of things. Just curious if anyone else does this…