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Three subwoofers is the minimum number to form a true REL-3D system, though some customers will use an individual subwoofer assigned to each main speaker channel. Meaning in a 5.1 surround system they would use five High Level connected subwoofers, or in a 7.2 surround system they would use seven High Level connected subwoofers. It's up to you how far you want to expand your system past the first three units (front left and right, center, and rear left and right).

Rel had said main left and right were high level and LFE, center ch was high level only and surrounds were high level and LFE. This video is now saying you can also use the HT series along with the other subs. Generally if I’m designing a room I’ll shoot Rel an email for clarification.

Thank you for reaching out. In a full REL-3D system, the front left and right channel sub(s) and the rear channel sub(s) are typically connected using both the High Level input and the .1/LFE input, while the center channel sub is usually only connected using it's High Level input. However, you could always make adjustments to this format based on your own system's needs and the specific subwoofer models that you're running. For more information, feel free to write in to contactus@rel.net and we will be happy to assist.

☝️ This. Phantom center is also miles better. Having more channels introduces channel crosstalk and a higher noise floor within the components. A good 2 channel system trumps. Get everything sorted and you'll have a crazy holographic presentation. Home Theater is a waste of money imo.

How do you have your Aperions set up? One in each corner? Thanks

​@dicmccoy "having more channels introduces a higher noise floor" From someone who's changed his cables multiple times for this ready reason, I would have to agree that unshielded cables may indeed heighten the noise floor. However, there are solutions to address a heightened noise floor. Even though I'm running a 5.2.4 in a small livingroom when pressing pause (or mute), there are occasions I'm actually unable to differentiate whether the system is on or if it's actually switched off. Shielded cables are the answer! And just so you know, the better the shielding the quieter, the room. If one is hoping to notice the incremental differences, I would suggest addressing the analogue cables of length first before moving on to digital power cables, etc. Silence is Golden.

I too, love aspiring the concept of REL 3D, but I feel like I somewhat agree with those dealer points of view. I just don't understand all the ppl who ignore time alignment and insist that they're getting the purest musical presentation that is possible... I absolutely LOVE my 1003mkii, but if I disable my AVR's time-and-phase-shift alignment, it basically just sounds like any other 'black box that makes bass'.. ANY system can sound like a hot mess if it's set up poorly, and IMO time & phase alignment between subs and mains plays a HUGE ROLE in the results.. That said, any "purist" that declares there is only one "right" way to do this stuff has probably lost the plot entirely.. Being aware of ALL of the options possible has helped me learn how to confront integration problems whenever a specific recipe doesn't work.

The big issue is proof of concept. While we have seen tons of Home Theaters here and other platforms we haven’t seen any videos actually showing a Rel 3D setup. I can recall one where a Rel rep set up a basic Rel 3D for Shane of Spare Change and I just got the impression Shane thought it was interesting but didn’t really seem to be much interested in it beyond that and hasn’t really talked about it since. So perhaps Rel should actually design and film a working Rel 3D theater and have Mr. Hunter discussing it.

I got one! and yes 3 different sizes in an open concept 17 x 20 x 14 room. A hi-level carbon special, a hi-level T9x Red, and a T7x off my sub. Still tuning it after a year’s time, but again that’s the fun of it

3 subs what is this sensurround as that was the number used generated 70 earthquake

@@jameschambers2053 which one are you using on your center ch? I had an ideal of trying to utilize all Rel HT series subs to create the Rel 3D. I already have two HT1510s up front and I know JH discussed using the Airship to add high level to them but then to add Airships to the center and the rears plus you need one each for the two 1510s so a minimum of 4 and now that they raised the price of the Airship to $400 makes it very expensive and probably not very practical. So will probably save and get a pair of 212/SX of Carbon Specials for my mains, S/510 for center and move my 1510s to the rear.

I couldn’t agree more. I started by adding a dedicated sub to my center channel and fell in love with it. I’ve since added dedicated subs to each of my 5 bed layer channels in addition to 3 REL HTs for LFE duty. The sense of scale that the individual channel subs add is incredible; the bubble description is spot on. It’s funny - when I go to an actual movie theater these days the audio presentation comes across as very thin after experiencing what I have at home. Once the 3D bug bites you there is no going back.

Thank you for reaching out. The Tzero MKIII can be a good option for pairing with the Kef LSX II in this size of room, though when you have a chance please write in to contactus@rel.net with this information and our team will be happy to discuss subwoofer pairing options in greater detail.

Thank you for reaching out. Our recommendation to place REL subwoofers in corners does apply to down-firing models such as the Stempede and Strata V, and is especially helpful with these models to help with reinforcing their output and projecting that output into the room.

Thank you for reaching out. The Classic 99 is designed so that you can connect to both it's High Level input and the .1/LFE input at the same time, meaning that you can connect High Level to your stereo tube amplifier and simultaneously connect using the .1/LFE input to the sub-out on your Marantz Cinema 60. Each of these input channels have their own independent Level control so that they can be tuned separately, and it will not be necessary to disconnect or reconnect any cables when switching between these two applications.

@@RELAcoustics thanks, that's really great news!

When you have a chance, please write in to contactus@rel.net and we will be happy to assist with troubleshooting this connection issue and providing resolution options as needed.

Thank you for reaching out! When you have a chance, please write in to contactus@rel.net and our team will be happy to review your system and provide a subwoofer pairing recommendation specific to your needs.

Thank you for reaching out. In most cases, when using room correction software we recommend temporarily disconnecting the High Level cables from your amplifier, or temporarily powering off the subwoofers, while the program runs. Then once the room correction has finished you can reconnect or power on the subwoofers and adjust their rear-panel tuning controls by-ear to achieve the desired blend. In most cases having subwoofers connected High Level while running room correction software will result in odd frequency response issues.

Thank you for reaching out. When you have a chance, please write in to contactus@rel.net with the dimensions (length, width, height) of your room and this information about your speakers and our team will be happy to provide a subwoofer pairing recommendation specific to your system.

Thank you for reaching out. When you have a chance, please write in to contactus@rel.net and our team will be happy to discuss setup and tuning of your T/7x in this system.

Thank you for reaching out, and for choosing REL Acoustics subwoofers for your home audio system! Adding rear channel subwoofers to a home theater system can provide a noticeable improvement to the immersiveness and realism of a home theater system, though for information on which specific model will be the best choice please write in to contactus@rel.net and our team will be happy to assist.

I think you can´t because there isn´t any 😅

Thank you for reaching out. The T/7x's cabinet is braced internally, though for specific information please write in to contactus@rel.net and we will be happy to go into greater detail.

Thank you for reaching out. If you are bi-amping your main loudspeakers with the Marantz Amp10 then the wiring of each REL's High Level cable will remain the same, except that we recommend connecting the High Level cable to the outputs on the amplifier which are feeding the low-frequency drivers for your main loudspeakers.

Thank you for reaching out. Some REL customers have used a three-subwoofer stack for supporting their center channel speaker, though in most applications a single subwoofer will be sufficient for the center channel.

Thank you for reaching out. Both the Classic 98 and the Classic 99 feature standby circuits, which lower the unit's power draw after 30 minutes of no signal reaching it's input circuit. More detailed specifications for each of these models can be found on the product pages on our REL.net website: rel.net/product-category/classic/

Thank you for reaching out. When you have a chance, please write in to contactus@rel.net with the model of main loudspeakers that you are using and the dimensions of your room and we will be happy to provide a subwoofer pairing recommendation specific to your needs.

Thank you for reaching out. It depends on the specific model of subwoofer that you will be using, though in most cases with stereo pairs of subwoofers we recommend assigning one unit to right channel output and the other to left channel output, while also feeding LFE channel signal to both subwoofers if they are being used in a home theater application. For more specific information on connecting REL subwoofers in your system, feel free to write in to contactus@rel.net and we will be happy to assist.

Thank you for reaching out. Some of our larger subwoofer models are capable of reaching well below 20Hz, though at this time none of our subwoofer models are designed to produce linear output down to 12Hz. 12Hz is well below the human hearing range, and with our subwoofer designs we have chosen to instead focus on producing sub-bass output that is as fast and responsive as possible to blend seamlessly with a system's main loudspeakers, rather than focusing primarily on this deep of low-frequency extension.

Thank you for reaching out. When you have a chance, please write in to contactus@rel.net and our team will be happy to provide a subwoofer pairing recommendation specific to your system.

The grill that comes supplied with the new Serie HT MKII White models is white.

@@RELAcoustics Excellent! I'm getting myself one of these!

Fair play. I love gloss white finishes. Most are scratch resistant now.

Because their subs are great performers

@@ralex3697 yes i know but ... I love the bass performens of this sub real 1510.. But its limited to 20hz.. I have rythmic e15hp. 12Hz response... And thats Amazing. And i have 2 subs

Thank you for reaching out. When connecting using the High Level input there will be no wires making contact with more than one amplifier terminal at a time. One wire will connect directly to one positive binding post, a second wire to the other positive binding post, and a third wire connected to a ground point. As a result, as long as you practice a normal amount of caution then there will be no risk of shorting your amplifier by using the High Level input connection.

Thank you for reaching out. The T/9x Red can pair very well with your Klipsch "The Nine" speakers, and since these are active speaker with a built-in amplifier it will be best to connect the REL using it's Low Level input to the RCA subwoofer output jack on the speakers.

@@RELAcoustics thank you! I will be conjure with the speaker and subwoofer settings…

Thank you for supporting REL, and we are glad that this video helped to answer your questions about connecting the High Level cable for the T/7x! As the video shows, both the High Level cable for your T/7x and your main speaker wire will be connected together to the output terminals on your system's main power amplifier.

Thank you for reaching out. If you have found that one of the subwoofer outputs on you AVR is not functioning correctly, then you could use an RCA y-cable so that both of your T/5is receive signal from the same functional subwoofer output on the receiver.

Thank you for reaching out. When you have a chance, please write in to contactus@rel.net and our team will be happy to provide a subwoofer pairing recommendation specific to your system.

@@RELAcoustics WOW, thank you! <3

It depends on the size and dimensions of your room, though when you have a chance feel free to write in to contactus@rel.net and our team will be happy to assist.