I bought the RSL 12S because I always wanted a true subwoofer at a fair price, and oh boy, did RSL deliver. Thank you to Audioholics and the many other stellar online / YT reviews. The cabinet is big but RSL warns everyone before purchase to Measure Twice and Cut Once, as one says, and get buy-in from other family members, but it fits the space once occupied by my old Velodyne DLS-5000R (amp developed a hum and was too expensive to fix) perfectly. I don't miss it one bit though. I am amazed by my new subwoofer, and it's so much better in every way than what I've owned before.

And it fits perfectly on top of my "SubDude-HT Subwoofer Isolation Pad" like it was made for it, so needed in my space because of the wood floor over a crawlspace. The whole house would shake and rattle otherwise.

I have the 12S set to Reference and at 5/10 bars. I ran YPAO on my Yamaha RX-3900 receiver and now the 12S is matched wonderfully in my 5.1 system with my old Polks (L/R: RT1000p, C: CS400 Rears: FX500).

Thanks again RSL for answering all my questions before purchase and for braving the terrible Dec 2024 / Jan 2025 LA fires.

This is my first expensive sub woofer. Had a dayton 12 inch sub and this one is a huge leap. This sub truly disappears from the sound stage ( no unwanted boom sounds). After experiencing movies with this sub you cant watch them on any other sub!

Upgraded from dual 10S mkII to dual 12S. My 10S were great. But the 12S are monsters. They really fill in the room. It’s not that they’re a lot louder. It’s just a better balanced sound throughout the whole volume range. If you crank it up they really rumble the room! Really happy with these speakers.

Until about a week before I made my purchase, I knew nothing about RSL and their speakers. After a few online reviews, I decided to give them a shot. The 12s is a great sounding sub!

I love my 2 12S Speedwoofers even though my neighbors don't.
Thank You Joe and the RSL Team