S/812 takes REL’s medium chassis concept to reference-like levels of performance and does so with style, beauty and devastating power. It delivers incredible levels of all ‘round performance for both music and film sound, gives customers a taste of what our reference models offer, and does so at a fraction of the cost.Find a Dealer
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Invisible Upgrades to S/812’s Bass Engine
Pure Carbon Fiber Backing
S/812 required upgrades to its ContinuousCast™ Alloy Cone to allow it to survive the massive power upgrades. To permit its thin, aluminum cone to survive 800 watts and incredibly long stroke, we added an ultra-lightweight backing of pure carbon fibre, strategically placed over portions of the rear surface of the cone. This produces two benefits; it strengthens and stiffens the cone and also eliminates reversion, wherein the backwave inside the cabinet is now prevented from interfering with the main launch of bass into the room. The result is more accurate and far louder deep bass.
There is Nothing Passive About These
Carbon Passive Radiator
Our uniquely tuned passive radiators use special suspensions, now with an additional 30mm of linear travel, to produce performance far beyond conventional subwoofers. Our new SuperProgressive™ passive radiator produces extremely long travel allowing for very loud output while retaining the variable stiffness of its suspension. This allows it to act like a sealed box compact 12” design at low volume and a high output 14” design at its limit.
Warning: Power Amplifier on Steroids
800 watts and Counting
At 800 watts the NextGen5 amplifier is borrowed from our reference models and rocks huge reservoirs of power and current. The 45% increase in power (previous version was 500 watts) is needed to deliver both the profound output levels needed for modern theatre, as well as to produce the deepest bass in a high end 2-channel system. This increase in power is necessitated by our development on the musical front of an all-new circuit termed PerfectFilter™ that balance both frequency extremes.
PerfectFilter performs two seemingly disparate qualities; extending the strong, even response of the extreme low end of bass frequencies while simultaneously opening up air and delicacy in the middle and high frequencies of one’s system. Additionally, we applied customized PureTheatre™ filters to allow S/812 to deliver the most awe-inspiring theatre effects ever offered in a classic REL.
Serie S Line Array
Stacked for Ultimate Performance
In the real world, bass occurs with width, depth and height. By stacking up to three units per side (stereo or theatre main L-R speakers) the proper perspective and height of sonic events are illuminated. This elevates reproduction from conventional stereo or theatre to a floor-to-ceiling panoramic, full scale perspective of each sonic event. Reviewers are lining up to marvel at the transformation of music and film into the full-scale representation that REL Line Arrays uniquely deliver.
I decided to upgrade my home system by adding a pair of REL S/812 subwoofers. This decision started when I reached out to REL and Jarred replied and suggested that the S/812 would be a nice fit based on the size of my space. Soon enough, I decided I should have a pair of them. I must have sent 20 emails to REL asking for suggestions and/or info, and, I got a courteous and enthusiastic reply from Jarred every time. The S/812s are incredibly powerful, beautiful, and acoustically perfect! With a couple placement, volume, and crossover adjustments, they soon blended perfectly with my wall mounted ELAC 330 JETs. Using blue sticky tack (as suggested on one of the REL videos) they haven't moved an inch on my wood floor. I broke them in as suggested with the 3 phases (15 min, 2 hours, and, 12 hours), and, it definitely made a difference. I am now a couple notches lower on the amp which obviously broke in nicely too. All of the info that I needed was provided and/or available on the REL website, REL youtube videos, etc. I would give 10 stars if I could, and, I wish you could all hear the difference from my previous in-wall B&W ISW4 subwoofers. Instead of rewiring my home, I purchased two of the Airship wireless transmitters which are pumping perfect signals 25 feet (sub 1) and 45 feet away (sub 2). I'm excited to listen to music again, and, I'm going to do that again ---RIGHT NOW! Thanks again REL and Jarred--you rock--just like your subwoofers!
Just starting my system; this one S/812 is supporting a pair of Klipsch Hersey-3s...soon to be a pair of Klipschorns AK6's along with another REL S/812. I don't really even have this one broken in yet; still in the first hours of operation BUT...wow what a wonderful improvement in my overall sound stage...and yeah, some more kick-butt bass is greatly appreciated. What the Herseys lack in bass, WOW..this REL sub overcomes and satisfies like a cold beer on a hot day. I am not an audiophile; but i do enjoy my music; i do love it reproduced flawlessly; I am int all vacuum equipment and just listening to this new sub at room listening levels, well...WOW again..this sub has WOW factor out the ying yang!!! SO, no audiophile terms to share, but what I am listening to, not even broken in yet, is an improvement I could not have thought possible. I know the sub will get better with break-in...but adding this REL to a pair of Herseys (that didnt cost nearly as much as the REL) improved my soundstage...it's like owning a pair of LaScala speakers...sort of.....REL is head and shoulders above the rest. Thanks UPSCALE audio for directing me to this purchase...and I will be buying more...eventually maybe a "six pack" of two rows or 3 stacked....as money comes freed up to do that...this one sub has me SOLD on another one, as soon as I can determine the best way to work them in with Khorns....
It took me a while to set it up properly given the difficulty I had with my Anthem MRX 710 but it was worth all the effort! Amazing and very powerful sub! Certainly the best I have heard! A massive upgrade from my previous Stadium III.
I have always loved REL subwoofers and always will. I recently moved to a larger single family home and my older S3 was too small for the family room. After watching 1 movie, I knew it was time to upgrade the S3. I received my new S812 yesterday and set it up last night. I only sampled some scenes from Rocketman last night and I'm simply blown away by the improvement! This was money well spent. If you like high end audio, you will LOVE this subwoofer!
S/812: Great packing on shipment. Black gloss is beautiful.
Easy installation. Sounds perfect. Placement tuning gave about +5db, rotation +0db, the crossover was difficult for me to hear a major change.
I have lots of tube traps which smooths out the room. I used an iPhone app to create a live FFT
waveform and then compared different positions and watch the change in the low-frequency response.
I used tracks 4 and 5 of the CD Best of Food for Woofers by Bass Mekanik. Room is 16x37x12 to the ceiling.
Traps in corners and across the front of the room over fireplace what is not used in Arizona.
Reviews + Awards
The REL S/812 is a genuinely impressive subwoofer that manages to combine low-end extension with powerful amplification to produce a performance that’s responsive, controlled and highly effective. This sub goes deep and, even on its own, had absolutely no trouble filling my home cinema with low frequency energy. However, this is no blunt instrument, and the S/812 is capable of astonishing deep bass that’s delivered with a surprising amount of subtlety and grace.