REL Acoustics Carbon Special Subwoofer Overview

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REL Acoustics

REL Acoustics

Күн бұрын

Hi, I'm John Hunter of REL, RELs lead designer, and today we get to introduce you to something truly special. All of our products are very, very close to us, but every once in a while, we do a special edition and the new carbon special is something we've been working on for about a year and a half and it is just magical.
This is a 1000 watt amplifier that we actually limit down to 800, but a beast of an amplifier driving our best reference quality drivers. This is a 12 inch carbon fiber driver with 4 full inches of stroke, 2 front, 2 back.
0:30
It's an amazing piece in a bespoke cabinet. This is not a conventional 812 cabinet. This has larger internal volume than anything we've ever done in this category. This is the absolute apex of what we've ever been able to accomplish in a medium chassis design.
Going back 10 years ago, we introduced the first limited edition, the 528/SE. It was a very limited edition piece that was only out for about four or five months, and it sort of announced the close of an era.
1:00
More recently, about two years ago, we did the Carbon Limited. Really pretty much the same thing. It was at the very tail end of the original Serie S, and a certain number of units limited. This will be limited in scope and it won't be available at all times necessarily throughout the year, but it's something that's important to us.
This is an ongoing product within this range, and as such, it's gotten a lot more attention in development during engineering. This is a real ground up, authored bespoke piece that will be with us for the next four or five years.
1:30
So with the carbon special, we use our state-of-the-art wireless. It's called Airship. It sends 5.8 gig signals, two of them wide bandwidth. So, we have one for the high level, one for the 0.1, both separated. You can run both simultaneously and it just produces this incredible zero compression sound. A lot of wireless still uses a fair amount of compression. This is completely uncompressed.
It’s about as good as you can ever get wireless at this time, and what you're going to find is this is a piece for very good speakers. We're talking about speakers at 10,000 and above whether it's pounds or dollars. As you start going into pairs, you’ll be able to pair this up with speakers that are extraordinary, and this also lends itself to stacking.
2:00
The driver we use on the Carbon Special is lifted from the G1 MKII reference design. It is a 12 inch driver, 350 millimeters. It weighs next to nothing. The actual moving mass of this thing is incredibly low and yet it has four inches, two inches forward, two inches back. Massive amounts of stroke, which allows it to go extremely loud, and also is needed for going loud with extreme extension down low. So this design will go down into the teens with authority. It's an incredible piece of engineering.
2:30
So, for the amplifier and filter, we borrowed the amplifier from the No. 25, our reference piece, which sells for almost twice as much money as this. It's a fantastic amplifier. It is a 1000 watt per channel design. It has tremendous amounts of headroom, and it's just so open and dynamic. The sound of this amplifiers is fantastic. The grip down low is wonderful.
So this is, a medium-sized cabinet, but it's bespoke. This is a unique cabinet only for the Carbon Special.
3:00
It's been extended a little over one complete inch front to back, and the reason for that is simple. Even with the special passive that we use underneath. The cabinets still needed more volume. You could hear it immediately in testing, so we extended it and it snapped everything together. All of a sudden we had this huge weighty concussive sound to it.
The dynamics were breathing. Before it sounded all tight and congested and it wasn't plumbing, the real depths.
So we try and do some fun things in industrial design every time we do one of these pieces so it doesn't stay stale for people.
3:30
Our design language is just constantly evolving, and sometime ago I decided to do these very small highly polished stainless steel badges that are on the heel.
The whole point to these is, you’re sitting there in a room, you're looking across and there's just something that catches your eye. You get this glint in the back of it underneath where you were expecting nothing. It just sort of reminds you of the specialness really complete design.
So in conclusion, with the carbon special, what we've offered here is our absolute finest medium-sized chassis.
4:00
Not everybody can afford to have some of our big reference pieces and certainly not stacks of them in their room. So this gives you a really big slice of that in a much more compact chassis. Something that you can live with in an everyday living room.
Everywhere you look on this piece, there’s just a feast for the senses. There are wonderful subtle...

Пікірлер: 63
@aaronfrench8322
@aaronfrench8322 2 жыл бұрын
Absolutely beautiful!!! I just bought an HT 1205 and I am so happy to finally be apart of the REL family!!! Thank you for producing such great products.
@RELAcoustics
@RELAcoustics 2 жыл бұрын
Congratulations on your new subwoofer, and thank you for choosing a REL! If you have any questions about your HT/1205 then feel free to reach out and we will be happy to assist.
@eric-bm5ot
@eric-bm5ot 3 жыл бұрын
You're such a brilliant man Mr Hunter! I own a Rel T5i and am totally blown away with its performance. It compliments my Tannoy's with amazing sub base. You exude such passion for every sub regardless of size and cost and that's inspiring! I wish you well and so excited to be appart of the Rel Acoustics family!
@RELAcoustics
@RELAcoustics 3 жыл бұрын
Thank you for the kind words Eric! We are glad to hear that you are enjoying the performance of your T/5i.
@jamieboyd5208
@jamieboyd5208 3 жыл бұрын
Which tannoy do you have?... I have precession 6.4 :)
@labalo5
@labalo5 3 жыл бұрын
Two of these in stereo are just lovely.
@themack276
@themack276 Жыл бұрын
I have owned a Carbon Special replaceing the Carbon Limited and it turns my Vimberg Amea standmounts, well 20kg is more than most floorstanders into full range, seamless blending and bass note boom, like having the Vimberg Mino's which woud not fit into my listening space. The sound with and without the Carbon Specials is not even close, they are truly musically Special
@jameschambers2053
@jameschambers2053 9 ай бұрын
Finally! The recommended track 4 of the Sneakers soundtrack makes sense to me why. Living with the CS for almost 2 years came down to unknowingly being out of phase, Duh! Thanks REL for your invaluable tuning assist vids and the passion you have for your product to be understood, paired, and played right. Took me awhile to figure out SMH but now on a new level of listening bliss, my ML Summits are complete
@RELAcoustics
@RELAcoustics 9 ай бұрын
Thank you for sharing, and we are glad to hear that you are enjoying the performance of the Carbon Special in your system!
@tomfoord8158
@tomfoord8158 3 жыл бұрын
I own at this moment 2x Rel T9i and today I have ordered 2x Rel Carbon Special so excited to get tem delivered before new year 😀😀😀
@RELAcoustics
@RELAcoustics 3 жыл бұрын
Thank you for continuing to support REL Acoustics, and congratulations on the exciting new subwoofer upgrade! Once they arrive, feel free to reach out if you have any questions and we will be happy to assist.
@rigorhead01
@rigorhead01 3 жыл бұрын
Congratulations brother!
@PammalRaaja
@PammalRaaja 3 жыл бұрын
Any idea of selling the T9i's.if so I would be interested, ie; if it is still available.
@DDSRacer01
@DDSRacer01 3 жыл бұрын
Love this model! My only concern is the availability. If I purchase one now and then later decide to stack an identical model, it might not be available which leaves me stuck with two different models of subs 😞😤
@RELAcoustics
@RELAcoustics 3 жыл бұрын
While the Carbon Special is a limited availability model, and as a result will not be continuously available year-round, we do intend on continuing to produce the Carbon Special in small batches for the duration of the S/510 and S/812's production run. So as long as you don't wait too long to purchase the second unit, you should still be able to complete a stereo pair in stages for this model.
@jtee9548
@jtee9548 3 жыл бұрын
It would be exiting and very helpful if you could afford the R&D to come up with an App that will allow adjustment from a phone, even if you only did it on certain models. It wouldn't have to price compete with the SVS, you appeal to a different customer from the norm (and use a different input system).
@RELAcoustics
@RELAcoustics 3 жыл бұрын
While we don't at this time use App control for any of our models, the No.25 and G1 Mk.II subwoofers both feature remote controls that allow tuning adjustments to be made from the listening position.
@analogaudiorules1724
@analogaudiorules1724 3 жыл бұрын
For that price, it better go down to at least 18 to 20hz or better at + or - 3db. Update, im very suprised, i looked at the manual, 18hz at -6 db is pretty amazing for a smaller sub like this. I'd say it's worth the 4 grand. Keep it up guys, y'all are amazing. It must be a really fast sub indeed.
@RELAcoustics
@RELAcoustics 3 жыл бұрын
Thank you for the kind words! The Carbon Special is truly an excellent subwoofer, with the ability to not only reach deep but also have extreme speed and articulation in it's output.
@sholtham1
@sholtham1 Жыл бұрын
I shared the scepticism of many older enthusiasts regarding sub-woofers but couldn't find a single negative review from my 'go-to' audiophiles (Steve Guttenberg, Ken Kesler, Steve Huff, Pursuit Perfect System, to a name a few) so I splashed out on the Carbon Special. I was a bit ham-fisted at first with the crossover and volume controls - the sound swinging from too much to too little bass. I then learnt that single clicks make a noticeable difference. Result - bigger soundstage, more 'weight' to everything, and a holographic image with many recordjngs. And mentioning recordings, I've found than modern recordings (typically since the 2000s but many from the last ten years) need tweaking a notch down on the cross-over and volume. All in all a 'sound' purchase - and to use a cliche, a sub-woofer is the single most 'inexpensive' purchase you can make to improve your system.
@RELAcoustics
@RELAcoustics Жыл бұрын
Thank you for sharing, and we are glad to hear that you are enjoying the performance of the Carbon Special in your system!
@mrrandy1
@mrrandy1 2 жыл бұрын
Hi John, I bought this from Music Direct and love it. I am using the upgraded cable from REL and its hooked up to my Yamaha M-5000 power amp. When I turn it on, I get some hum from the subwoofer, is this normal.
@RELAcoustics
@RELAcoustics 2 жыл бұрын
Thank you for reaching out, and for choosing a REL Carbon Special subwoofer. There are a couple possible reasons for the hum that you are experiencing, and it will be advantageous to get our service team involved in troubleshooting this issue. When you have a chance, please write in to contactus@rel.net and we will be happy to assist.
@ron101346
@ron101346 11 ай бұрын
John, my understanding is that the passive radiator should be twice the size (or twice the displacement) of the active driver according to good engineering practice. But in the REL Carbon, both drivers are 12" Does this affect optimal performance given this design or is there a workaround?
@RELAcoustics
@RELAcoustics 11 ай бұрын
Thank you for reaching out. In our experience this rule regarding the size of the active driver relative to the passive driver is not necessarily true. Excellent performance can be achieved by using an active driver of the same size as the passive driver, or a passive that is only slightly larger than the active driver. You just wouldn't want to use a passive driver that is smaller than the active driver in most cases.
@gabemartinez1012
@gabemartinez1012 11 ай бұрын
Is it good for movies to get into sub frequencies?
@mengirex
@mengirex 3 жыл бұрын
Greetings, I have a question: I already have a pair of SVS SB-16. If I buy a pair of Carbon Special for my main L&R speakers, can I connect them with both the high-level signal and the LFE signal? In other words, can I play the LFE in both the Carbon Special and the SVS SB-16 Ultra? Thank you
@RELAcoustics
@RELAcoustics 3 жыл бұрын
Thank you for reaching out. The Carbon Special subwoofers can absolutely be connected using both the High Level input and the .1/LFE input simultaneously. For specific information regarding connecting the Carbon Special in your system, please write in to contactus@rel.net and we will be happy to help.
@CanadaSocial
@CanadaSocial 3 жыл бұрын
What would you say are the main differences between this sub and the no 25. Would this pair well with a Klipsch RF7 III for movies and a Klipsch la scala for music? Would you recommend stacking in my case?
@RELAcoustics
@RELAcoustics 3 жыл бұрын
The Carbon Special is an excellent subwoofer, though by comparison the No.25 has a larger driver, improved filter design, and significantly greater cabinet volume, among other differences. The Carbon Special can work well with the Klipsch speaker models that you mentioned, though when you have a chance feel free to write in to contactus@rel.net and we will be happy to provide a subwoofer pairing recommendation specific to your system.
@markrigg6623
@markrigg6623 2 жыл бұрын
Just got a single S 812 to go with my RF7 iiis and even without being run in yet I'm very 😊 happy.
@tommcgrevey685
@tommcgrevey685 3 жыл бұрын
I need to upgrade my old T7 :)
@peterargiros9508
@peterargiros9508 3 жыл бұрын
How would you compare the g1 mk1/2 vs the carbon special? Thanks!
@RELAcoustics
@RELAcoustics 3 жыл бұрын
The Carbon Special is able to deliver performance close to that of the G1 Mk.I and Mk.II models, though the G1 subwoofers will still be the higher performing option. The Carbon Special is intended to give performance close to that of our Reference subwoofer models, but from a more compact cabinet size.
@itsrecordingman
@itsrecordingman 3 жыл бұрын
when will REL be doing magnetic grilles? that will be a MASSIVE improvement in the aesthetic department and for a brand of such great sound this should have been a part of the game already IMO
@RELAcoustics
@RELAcoustics 3 жыл бұрын
Thank you for this feedback. At this time the grilles for all of our subwoofer models use pin inserts, though we can certainly bring this note to our product development team to see if we can incorporate magnetic grilles into any of our future models.
@itsrecordingman
@itsrecordingman 3 жыл бұрын
@@RELAcoustics it would be the icing on the cake !
@CanadaSocial
@CanadaSocial 3 жыл бұрын
Can I use this for a Center channel sub along with two no25’s for the left and right speaker subs?
@RELAcoustics
@RELAcoustics 3 жыл бұрын
The Carbon Special can be used as a center channel subwoofer, though depending on the system it may be more sub than you necessarily need for this application. For a subwoofer pairing recommendation specific to your system, please write in to contactus@rel.net and we will be happy to help.
@CanadaSocial
@CanadaSocial 3 жыл бұрын
@@RELAcoustics Thank you I have already contacted you guys, these were just follow up as I am reading more about REL from various sources to help in my decision making. I was asking specially for the Klipsch RC64 III center channel along with La Scala's for the Left and the right. I wish you guys updated your site to match subwoofers for the Klipsch line of speakers. I noticed in my reading on the audioholics forums that REL subwoofers can improve the Sub bass for speakers that already have a bass component but may not be the best fit if the actual speaker itself does not go down low. Its seems odd to me. For example I was thinking that since the Klipsch La Scalas go down to 50z it would have been great to pair it with a pair of REL no 25's but I am hearing that I might need to have multiple subwoofers per speaker to take care of the various frequencies that the actual speaker does not play.
@damytzeus
@damytzeus 2 жыл бұрын
what you recommend? two carbon special vs two 212sx or 212se? speakers are vienna acoustic mahlers -play down to 22hz. for music only. separate ht room. i play music loud and task speakers and subs. g1 and #25 subs are too big to have two subs in the music room and i want stereo subs. i could run one #25 or one stack -not stereo. thoughts? currently run one velodyne dd+ 18 sub, which has failed. thoughts? i guess that i could eventually stack carbon specials? and the space large. when i have systems syncronized and playing, i have three 18" subs, two 12" subs, three 10" subs and a total of 5300 watts of continuous high current power. the high powered subs run off dedicated 20a circuits. point is that i have the volume to run many large subs.
@RELAcoustics
@RELAcoustics 2 жыл бұрын
Based on your description of the room and system, we recommend a stereo pair of 212/SX subwoofers as being the best option for pairing with your Vienna Acoustics Mahler speakers. For more information on subwoofer pairing for your system, please write in to contactus@rel.net and we will be happy to assist.
@damytzeus
@damytzeus 2 жыл бұрын
@@RELAcoustics i have the opportunity to buy a 212se at a very good price. how do you feel and mixing a 212se with a 212sx?
@RELAcoustics
@RELAcoustics 2 жыл бұрын
@@damytzeus The 212/SX is the current equivalent to the now-discontinued 212/SE, though improvements and upgrades were made when designing the 212/SX which result in it not being a perfect tonal match. If you currently have a 212/SX in your system, then the best option for forming a stereo pair will be to add a second matching 212/SX.
@wetnews
@wetnews 3 жыл бұрын
I want one 😊
@Projekt2012og13
@Projekt2012og13 3 жыл бұрын
I have one the way
@strongkku
@strongkku 3 жыл бұрын
I have two T7i.When I am not listening to music, do I need to turn off the power of the subwoofer?
@RELAcoustics
@RELAcoustics 3 жыл бұрын
You can power off your T/7i subwoofers when you are not listening to the system if you wish, though for optimal performance and improved product lifespan we recommend leaving the subwoofers powered on at all times. This results in less wear on the subwoofers' electrical components due to power cycling, and ensures that it's amplifier remains at a stable operating temperature.
@strongkku
@strongkku 3 жыл бұрын
@@RELAcoustics Thank you very much for your reply
@mrrandy1
@mrrandy1 3 жыл бұрын
John, will this be a limited production subwoofer?
@RELAcoustics
@RELAcoustics 3 жыл бұрын
The Carbon Special will be a limited-availability model.
@Agent-fg9ol
@Agent-fg9ol 3 жыл бұрын
six please 😁
@ac81017
@ac81017 3 жыл бұрын
Can you run 2 carbons on a single airship?? Or how do I connect 2 carbons wireless? I'm about to take the plunge of a pair of Carbons:-)
@RELAcoustics
@RELAcoustics 3 жыл бұрын
For a stereo pair of Carbon Special subwoofers we recommend using two Airship wireless systems, with one assigned to each subwoofer. This will ensure that each subwoofer receives dedicated left or right channel signal.
@peterargiros9508
@peterargiros9508 3 жыл бұрын
How do you hook up the wireless unit? I have a pass labs int250
@RELAcoustics
@RELAcoustics 3 жыл бұрын
@@peterargiros9508 The Airship Wireless system will connect to your Pass Labs INT-250 using the High Level input in the same way as if you were connecting directly to the subwoofer. With this amplifier, red wire should go to right channel positive, yellow wire to left channel positive, and black wire to the signal ground screw.
@jwblue575
@jwblue575 2 жыл бұрын
Anybody have a sub-woofer that produces a low frequency quiet hum?. It is not the sub-woofer itself (I don't think). I can leave it plugged in and powered on and there will be NO HUM if I disconnect the inter-connect cables that are plugged from my sub to my AMP. Can the AMP itself cause a ground loop? I heard a "Isolation Transformer/Ground Loop Hum Eliminator" might help? Any suggestions? I like to listen to Jazz a lot and that music can be dynamic. Even though the hum is not very loud - During quiet passages in Jazz the noise can be very noticeable. Any suggestions would be appreciated.
@RELAcoustics
@RELAcoustics 2 жыл бұрын
Thank you for reaching out, and we are sorry to hear about the hum that you are experiencing. If the subwoofer only hums when it is connected to your system's main amplifier, then the hum that you are hearing is likely the result of a ground loop in your system, rather than the subwoofer itself being defective. When you have a chance, please write in to contactus@rel.net with the serial number for your subwoofer and a brief description of the equipment in your system and we will be happy to assist with resolving this hum.
@jwblue575
@jwblue575 2 жыл бұрын
@@RELAcoustics Thank-you for getting back to me. I am sorry I was not more clear. I was just asking in general about HUMMING and Sub-woofers. I read from a few different sources that it could be a common problem with any sub-woofer? I do not have a REL - I have a JL Audio sub. : ) I think it was my interconnects because I changed them and the humming has gone away for now. I was using a pair of audioquest Yukon cables (very expensive btw and I only purchased them because the review that I read said they were good for sub-woofers and bass frequencies - careful folks) and they seemed to have added the noise? It could be the AMP though? Maybe it is the source of the ground loop hum? But, I am not sure just yet - like I said there is no hum right now with the synergistic research interconnects.. Fingers crossed.
@RELAcoustics
@RELAcoustics 2 жыл бұрын
@@jwblue575 If the hum went away when you changed to different RCA cables, then the original RCAs were likely the source of the hum. It is tough to say specifically why this was the case, but in the end as long as the hum has been resolved then I wouldn't worry about it too much. We hope that this helps, but feel free to let us know if you have any additional questions or concerns.
@jwblue575
@jwblue575 2 жыл бұрын
@@RELAcoustics Thank-you Rel A.
@sbrinckoo855
@sbrinckoo855 3 жыл бұрын
How much.?.
@RELAcoustics
@RELAcoustics 3 жыл бұрын
Pricing and other information for the Carbon Special can be found on our website at rel.net/shop/powered-subwoofers/serie-s/carbon-special/
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