Very underwhelming considering its size. Upgraded from DIY JL 12W0v3-4 subwoofer connected to a kicker 300 watts Rms amp and the speedwoofer 12s is barely louder. Considering the speedwoofer box is much larger than previous subwoofer and runs with more watts, i feel like it wasn't much of upgrade and not worth the investment. Very unfortunate they have a 150$ restocking fee but understand why. I have no issues with the size of speedwoofer 12s just the performance was very underwhelming. Had a very good experience with their customer service which is why i gave it 3 star.

My music room is 16 ft by 22 ft with 14 ft vaulted ceilings and the 12S was recommended to me as something that could fill the room. When it arrived and I realized it was the size of an end table I thought maybe I had made a mistake -- but I absolutely did not! This thing sounds amazing and is the perfect size for my room. Flea is super articulated and Mick Fleetwood's kick drum on Tusk is a revelation. Pairs perfectly with my KEF bookshelves and Marantz amp. Plus, my cat loves the vibrations and lays on it -- little guy has great taste.

I’m loving this subwoofer, it added so much impact to my audio system, running a rz50 with Klipsch RP- line of speakers, the sub digs low giving that impact in movies you can feel not just hear. Highly recommended

Reading and watching reviews for over a year, did NOT even come close to what this really puts out! Warning for war vets... this hits in your chest like your setting off a shape charge! If you have room for a subwoofer this size its worth double what they are charging! Customer service was awesome when I reached out for the wall spacing specs. Super friendly and quick to answer!

Finally been starting to upgrade my 2.1 system. I had bought new SVS towers about a month ago (which I love) & was looking at a couple different subs. Thought about going SVS to match, but for the cheaper price, the 12s is blowing my mind, the lows are incredible. I listen to alot of different stuff, alot of electronic music & even at lower volumes, the bass sound this thing puts out is phenomenal. Throw on something by Lorn sometime & prepare to be amazed. Great sub at a better value than others 👍
(I know my speaker placement isn't the best here, but I have limited space)

when the levee breaks , I’ve got my place to go😎
13x16 room. I purchased 2….now I want, 2 more
Units, phenomenal…packaging, wonderful…set up, plug in 😂

I had been shopping and researching ported subs for over 2 years and eventually decided the RSL 12S was the BEST performance to $$ ratio on the market! Unfortunately, economic market conditions have caused everyone’s prices to go up but somehow RSL was able to mitigate their price increases passed on to the customer. In addition, I was able to take advantage of their powerbuy program and got 11 other people to ge the added benefit of incredible pricing for the best 12” ported sub on the market. It may not have an app or room correction but it does have high level inputs, high level rca outputs (to better integrate a 2nd lesser performing sub or even a 10S) and the remote has been a game changer for me!
The 12S itself is extremely musical yet somehow is able to dig down to 14-16hz in room with no problem. My other 12” ported sun dies off around 28hz and to actually hear the frequencies at or below 20hz is amazing!!
Seriosusly, unless you need active room correction, a phone app, or more output than a 12” can give (which is not easy to do), the RSL 12S can’t be beat! Especially when every other subwoofer company is jacking up prices with no added benefit/reason, the RSL 12S (or 10S) is your best option!

Btw. The packaging is top notch, the included floor sliders (other companies charge $15 for these!) and features and performance is awesome. The box my 12S came in had a few big gouges and scratches but nothing even came close to the actual subwoofer.
I do recommend paying the small fee for shipping insurance mainly just for piece of mind because the shipping weight is heavy and fedex isn’t the best, imo. In fact, my order took longer than expected to arrive but I blame that mostly on when I placed my order (12/31/25) which had Christmas and new years holidays that caused delays.
Just a side note, all 11 other people that got their 12S in our power buy are extremely satisfied.

Literally, my only regret is that I couldn’t afford to order 2 12S instead of just one.
Thank you RSL for maintaining your pricing the past couple years that allowed me to get the subwoofer I wanted the most.

Side note: the RSL 12S is on the bigger side so make sure to measure your space. Also to match the 12S in power, SPL, freq response, you’ll have to spend over $1400-1600 (or more) with svs, rythmik, Tonewinner etc.
I’m planning to build my next 7.x.4 HT system after I move with their CG3M and CG23M speakers! Thanks

Finally got a 2nd one and wow what a diiference fills the space better. RSL ftw

This woofer is big. The packaging was strong and it shipped quickly. The build seems top notch. It is sturdy and heavy. The actually woofer looks premium and top notch. It can make visceral bass.

I will say I am having a heck of a time tuning my room of dead zones. All I can say is keep trying. I am still not happy with the bass at my listening position but I will get it right. There were days I thought the speaker sucked and had no bass. Then I’d go stand in the corner and be blown away. I confirm RSL is premium. I also have the MK10 and it is killer. I am an RSL fan. Thanks.

Been a "low-end audiophile" (best sound for the $) since my college days in the late 70's early 80's. Current room is an open floor plan living room/dining/kitchen 27' x 22' 8' ceiling, listening area in 1/2 the room. For the past 15 yrs I've had a 5.1 system: 15" Velodyne DEQ-15R sub with Boston Acoustics CS26B F/R and CS225B center, driven by an Onkyo TX-NR676. The Velo sub panel amp went out for the 2nd time, so it was time for a change.

I used to have tower speakers. ~30 yrs ago when subs started to proliferate, I went to bookshelf size speakers and a sub. I'll never go back to towers. Subs provide a huge step in tuning a system (unless you want to spend Big $'s on a bi-amped system).

After much research & deliberation I decided on the 12S. I suspected I really needed 2 subs for such a large room, and thought about a 10S, but I also knew I wanted a remote for gain and EQ control, so I went with the 12S. The single sub was ok for moderate volume but just couldn't keep up at high volumes. After a few months RSL sent a blemish 12S sale email, and I had my 2nd one.

That did the trick. The 12s"s don't shake the room with very low bass like the Velo did, but that's fine with me, too much of a good thing is bad. The 12S's have much better/tighter control at all frequencies vs the Velo, and keep up at higher volumes better. The 12S's are much better for music, and work great for me for movies. If you want the whole house to shake with super low bass in movies, you may want a larger sub, but I don't need that much "immersion" for movies. The 12s's do just fine. There's plenty of sound & shake, just not the "earthquake" really low stuff.

I like the aesthetics of the 12S's. The "plain black wrapper" says to me that RSL put their cost into best performance vs trying to be pretty, and they are successful!

The only comment for improvement is change the gain settings bar graph to numbers. With the bar graph it is difficult to see just what the setting is. I count the number of button pushes when adjusting. I find I have to "zero" and reset the gain between the two subs occasionally.

If my Boston bookshelfs give it up, I'll be going with the RSL CG23M's. I'm impressed with the value RSL provides!

Best subwoofer I have ever owned. The remote control is convenient. Glad I bought 2!

My Klipsch 12” Sub Took a Dump on me, Im glad it kind of did now.
I have a 9.2 system with Auro 3d setup.
I do have another Klipsch sub r120swi wireless it’s okay for $250.
Would like another 10s or 12s sub down the road.
I didn’t know what new Sub to get this time. In the mid 1980s I got my first stereo at RSL. I didn’t know if RSL was still in business
40 years later and Im glad they still are.
I used Google AI to help me compare different Subs to the 12s.
I compared it to $1400 subs and the RSL came out as the best Sub.
The RSL Sub seemed to help the rest of my stereo wake up some. On Music the sub is better than my klipsch,It sounds much cleaner. On Movies the sub is Awesome and sounds great.
Though Movies are produced much different from music so that’s why there’s such a difference.
My living room is 24x14 ft with cement floors.
The sub is strong enough to feel it some in my body and the walls in my house Shake more.
I like the remote control that comes with it.
I kind of didn’t want a sub that used an app.
So Far Im Very Happy With The
12s Subwoofer.
I definitely would Suggest to anyone to get a
RODGER SOUND LABS SUBWOOFER!

Watching a movie with this as one of my 4 subs is nothing short of life altering. This sub is worth at least twice what I paid. I love this company.

I have been through many "high end" brands of subwoofers, looking for the best match for my Focal speakers. Nothing stood out until I heard the Speedwoofer 12s. Everyone that has heard my setup with the dual Speedwoofer 12s is blown away by them. A friend spent over $2,000 a piece on his HT subwoofers and they are now on sale so he can replace them with Speedwoofer 12s. The sound quality is unmatched and the notes that I didn't know existed in movies are clear as day. The "clean" bass that comes from these subwoofers allows you to enjoy movies/music on a whole new level. From the crisp, on time bass, at low levels to the deep rumbles that you can feel at high levels, these subwoofers continue to amaze me. I can honestly say that at this price point, I have never been more excited about a purchase in my life. I chose to go with duals to balance out both the sound and appearance of our basement set up and even thought it is probably a bit overkill since these perform so well, it makes me smile every time they fire up. I have yet to find any song or soundtrack they cannot handle. Keep in mind, they are big and heavy, but I think that is just they way they should be. These added another dimension to my HT setup and I cannot say enough positive things about them. If you have any hesitation...don't!

Fantastic subs. So easy to dial in and get great mid and deep bass from the two 12s subs I have across my front stage. One note from this initial calibration. When using my Denon’s audyssey xt32 calibration (via the app), I made the mistake of setting my sub’s built in volume/ gain knob at the high end of the acceptable range my AVR was looking for. Essentially turning it up until it exceeded the AVR’s recommended volume window and then backing down one click. This made turning on Dynamic EQ and any later fine tuning of the db level of the subs (via the Denon app) to go too hot very quickly. I would recommend tuning the sub’s built in volume to sit right in the middle of the AVR calibration’s acceptable range. Very easy to achieve this with the 12s remote and blue lights up front. One or two clicks too hot on the sub, was multiplied exponentially when turning up the volume or activating dynamic EQ.

Connected One 12S to a pair of Swan OS-10 powered desktop speakers with 31 watts RMS per channel maybe. Stupid Fun I guess? But the 12S works even with small speakers. I Do have a Outlaw Receiver and some Schiit Audio EQ and Elac Towers. You still need a second sub even with the level I have. Best Bag For The Buck Subwoofer Period.

A single 12S is being used in a 2-channel music only listening room. Room dimensions are 21’x19’ with a sloped ceiling that varies between 8 and 10 feet. A 6’x17’ hallway is attached to the room and where the 12S is positioned just behind the listening position adjacent to the main room. The room is fully acoustically treated with Sonex panels on the side walls and wood diffusion on the front wall. A small amount of panel absorption is located on the rear walls. Also included are 6 bass traps with 4 Argent Room Lens.

EQUIPMENT -> Qobuz Music -> MacMini w/HQPlayer -> MicroRendu 1.4 -> Denafrips Pontus II -> Topping Pre90 -> Quicksilver KT Monoblocks -> Harbeth HL5+XD -> RSL12S

Prefered Music Genre is Jazz, Classic Rock, Alternative Indie.

Setting up the 12S was a breeze and super easy to integrate with the Harbeth’s. I am running the Harbeth’s full range and blending in the 12S I’m guessing somewhere around 35Hz to 45Hz. The sub sounded very good but I feel that adding an isolation base and a bit of weight on top of the cabinet cleaned things up just a bit with perceived added focus and speed.

The bass output of the 12S is outstanding. On average, bass output or volume is roughly just pass the midway point. I was going to order two of these and RSL recommended that I try a single sub first. I’m glad I took their advice as I couldn’t be happier with how this single sub performs with my system. The bass is impactful and adds a sense of depth and scale to the music. I don’t consider myself a hard rocker but Classic Rock never sounded so good on my system.

Any negatives or something I’d wish for, yes. I wish the crossover frequency adjustment had a series of small click so the user could make it easier to dial in and find a predetermined setting. The volume dial on the plate amp has these clicks.

In my opinion the 12S Speedwoofer is an incredible sub at any price, but for $799 has to be one of the best bargains in HiFi.

First, I got the 10S MKII And I liked it and I wanted to get another one to have dual powered subwoofers. Then all hell breaks loose there’s none to buy. So I say what else you got. And that’s how I got the 12 S. And everything sounds really good. Truly couldn’t be happier. You can see both of them in one of the pics