REL Acoustics T5i Overview 

Thank you, and we certainly are passionate about our subwoofers!

Adding a second subwoofer to make a stereo pair can definitely have a dramatic impact on the sub-bass performance in your system. We hope that you are continuing to enjoy your T/5i's!

I just took same subwoofer from a dealer for a test with my system. As the guy in the video says, the sound seamlessly expands to lowest frequencies. Seriously thinking abut buying it.

Vladimir T - I’ve heard nothing but good things about this company subs. I’d say go for it. I bought mines to go add to my Paradigm S8s. Need a little more low-end when I’m listening to certain tracks.

Thank you for the positive feedback Robert, and we are glad to hear that you are enjoying the performance of your T/5i!

Thank you Jeff for the positive feedback, and we hope that you are continuing to enjoy the performance of your two T/5i subwoofers.

Thank you for the kind words, and we are glad that you are liking the performance and appearance of your T/5i's!

Thank you for the support, and we are very glad to hear that you are enjoying the performance of your stereo T/5i subwoofers. If you have any questions about your subwoofers then feel free to reach out and we will be happy to assist.

Thank you for supporting REL Acoustics, and we hope that you love the performance of the T/5i subwoofers! Feel free to reach out if you have any questions or concerns.

We're happy that you're impressed with the T/5i so far. Don't hesitate to reach out with any questions.

Thank you for the feedback, and we are glad to hear that you are enjoying the performance of your T/5i subwoofer! If anything comes up or you have any questions then feel free to reach out and we will be happy to assist.

Thanks for appreciating our work

I have the t5i. Always wonder why it fires down and others fire front. My cats like to lay close and feel the waves come out

Ideally you shouldn't have to adjust the EQ on your amp for your REL subwoofer to produce good bass levels. Please feel free to reach out to contactus@rel.net and we will be able to help with any tuning or connectivity questions.

When connecting a REL subwoofer, especially when using the high level connection, we recommend setting the front left and right speakers to large or full range output.

Typically I would recommend the single T/9i for pairing with your Klipsch Forte speakers, since the T/9i has greater amplifier power which will help it to match the output levels of these high-efficiency speakers. However, feel free to write in to contactus@rel.net and we will be happy to provide a subwoofer pairing recommendation for your system.

Thank you for choosing REL subwoofers for your system! In order to get the best possible performance from your T/5i subwoofers, we recommend having them placed directly on your floor, even if it is carpeted. This will allow the subwoofers to couple directly with the floor, resulting in more powerful and deeper output.

The T/5i is an excellent choice for pairing with your Elac Navis ARB51 speakers in this system. The Bluesound Node 2i is a Class D amplifier, so please refer to the instructions shown in this video when connecting the T/5i subwoofer using it's High Level input: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-3F5WTOu60hE.html

The T/7i will be the preferred option for pairing with your Triangle Signature Delta speakers. If you have any additional questions, feel free to write in to contactus@rel.net and we will be happy to help.

The T5 can be used alongside a newer T/5i in a stereo pair and the sound will be close, though they will not be a perfect match. Ideally both subwoofers in the stereo pair should be the same model.

REL Acoustics ... TQ!

At this time T/5i Black availability is highly dependent on the region you are purchasing in. Your local REL dealer/distributor will be able to answer questions regarding availability, though if you have any additional questions or concerns feel free to write in to contactus@rel.net and we will be happy to assist.

Thank you for reaching out. The High Level input and the Low Level input function as the same input channel on the T/5i, and use the same input filter circuit but draw signal from different points in one's system. As a result, we do not recommend connecting to both the High Level input and the Low Level input at the same time. Doing so greatly increases the risk of overloading the subwoofer's input filter circuit, and since they function as the same input channel you will need to re-tune the Level and Crossover controls when switching between these two systems. That being said, the .1/LFE input on the T/5i is a separate input channel from the High/Low Level input, meaning that it is possible to connect both High Level and .1/LFE simultaneously. When doing so the main thing to consider is that the .1/LFE input completely bypasses the subwoofer's crossover filter circuit, meaning that it will be necessary to set a low-pass crossover within your preamp when connecting to this input on the REL.

We recommend keeping the stock feet on the subwoofer, since these feet are designed to place the down-firing active driver at a specific distance from the floor to achieve optimal performance. Isolation feet work well with loudspeakers where you want to decouple them from the room, though with our subwoofers you actually want to couple them to the floor which helps to reinforce and project the bass energy produced by the subwoofer.

I'd save the Gaia IIIs for something else, or sell them. I just installed Gaia IIs on my Focals.

Feel free to write in to contactus@rel.net for a personalized subwoofer pairing recommendation for your system. In your email, be sure to include the dimensions (length, width, height) of your listening room, your model of speakers, and the model of amplifier that you are using to drive these speakers.

I don't see why not.

Based on the size of your listening room the single T/7i subwoofer will be the best option for pairing with your KEF LS50 Meta speakers. For additional information on pairing a subwoofer for your system, feel free to write in to contactus@rel.net and we will be happy to assist further.

The T/5i, and the new T/5x, can pair well with the Dali Oberon 1 speakers, though based on the size of your listening room the Tzero Mk.III will likely be the better option for use in this system. The Tzero Mk.III will be capable of blending seamlessly with these speakers, and the combination of it's 6.5 inch down-firing driver and 100 watt amplifier will enable it to deliver deep and dynamic low-frequency extension in your room, without overloading the room or overwhelming the output of your main loudspeakers.

Thank you for reaching out. To get the best possible performance from the T/5i (or current T/5x) subwoofers we recommend placing them directly on the floor in your room, rather than on an elevated stand or platform. This will allow the subwoofer to couple directly with the floor in your room and use this surface to reinforce it's output and project that output into the room, which is especially important with down-firing designs such as the T/5i. By comparison, placing the subwoofer on an elevated surface can limit the dynamics of it's output and it's low-frequency extension. In your case, it will likely be best to place these two subwoofers on the floor on either side of your standing desk.

Assuming that your system is placed in a small-to-medium sized room, the T/5i will be an excellent choice for pairing with the Acoustic Energy AE300 speakers.

Hello Truman, based on the size of your listening room we recommend the S/510 subwoofer as being the best option for pairing with your Martin Logan Montis speakers. For more information about the S/510 and tuning it for your system, feel free to write in to contactus@rel.net and we will be happy to help.

The T/5i can pair very well with the Elac Uni-Fi Reference speakers in a medium sized room, though if the room is larger than 400 square feet then I would recommend considering the T/7i (or the new T/7x) as being the better option.

@@RELAcoustics Thanks for this. I'm leaning towards getting dual T/7x's. Keep up the awesome work!

The T/7i is the closest current comparison to your T3, though it is possible that the T/5i will work well in your system. For a custom subwoofer pairing recommendation for your system, feel free to write in to contactus@rel.net.

All of our subwoofer models, including the exclusively down-firing models such as the T/5x, will perform equally well on carpeted floors as they do on tile or hardwood floors.

@@RELAcoustics I do have Sonus Faber Concertino speakers driven by a Hegel H160. The wonderful gentleman from REL suggested that I get the T7X as it will match well with the Sonus. I have a small listening room at 9’ x 10’ with carpeted floors. I only listen to classical and jazz vocals. As I believe that the T7x suggestion is correct but I was thinking that for a small room, I may still enjoy the REL musicality without affecting my tight budget much. However if REL would suggest that I do wait and save up for the T7X,then I would follow the advise. Thank you.

Our subwoofers are no longer manufactured in Bridgend, though we do still have an office there which works with our dealers and distributors outside of North America. The dealer locator portal on our website can be used for finding a listing of REL authorized dealers in your area, and they will be happy to demo a selection of our subwoofers for you: rel.net/dealers/

@@RELAcoustics that's a shame I will take a look anyway

The T/5i is an excellent choice for pairing with your ATC SCM11 speakers in most room sizes.

We typically define a medium room as being between 200 and 400 square feet

Thank you for reaching out. Are you hearing any distortion or crunchy output from the subwoofer since this occurred? If not then you most likely did not do any harm to the T/5x. If you do hear any distortion, then feel free to write in to contactus@rel.net and our support team will be happy to assist with troubleshooting and providing resolution options as needed.

@@RELAcoustics it's lost its tunefulness for sure .If you mean crunchy as in hardly as much bass too then yea.

@@chrisrussell5498 When you have a chance, please write in to contactus@rel.net with the serial number for your subwoofer, the model of amplifier that it is connected to, and a description of how it is connected to this equipment and our service team will be happy to assist with troubleshooting.

The company founder was Richard E Lord - hence R-E-L.

In our experience you will experience improved performance and less phase-related frequency cancellations by sticking with a a single pair of subwoofers to support your main loudspeakers. A stereo pair of S/812 can certainly be crossed over high enough to blend well with the majority of bookshelf speakers.

@@RELAcoustics Do you mean I should sell my current pair of T5i and just use a pair of S 812?

@@ethan8023 What model of bookshelf speakers are you using, and what are the dimensions (length, width, height) of your listening room? This information will be useful for determining if the stereo pair of T/5i's or S/812's will be the best option for your system.

@@RELAcoustics I'm using Focal Kanta N1 speakers. The room size is 7.5 meters (L) X 4.5 meters(W) X 2.8 meters(H)

@@ethan8023For pairing with the Focal Kanta No.1 speakers, the pair of S/812 will offer a more seamless blend and improved performance compared to the pair of T/5i. However, based on the size of your room a stereo pair of S/510 subwoofer would be the best option for pairing with these speakers.

Thank you for reaching out. Assuming that your system is being used in a small-to-medium sized room, then a pair of T/5i can be an excellent choice for pairing with the Triangle Magellan Duetto speakers.

Thank you for reaching out. If you are able to find a good condition T/5i then it will provide an improvement in performance over your T5, or a new T/5x will represent an even more noticeable upgrade in performance.

Or correctly if you're British ;)

@@AM4N18 If you're going to pronounce the word Aluminum as Alumin-i-um, or Alumin-e-um, then you need to either put a tilde over the n to give it a Spanish spin or spell the word differently than the correct spelling. Never understood why the Brits wanted to corrupt the pronunciation that way.

@@HansDelbruck53 Not sure how it's corrupting anything, I could say the same in reverse. Aluminium it is for me.

@@AM4N18 My point is that they're pronouncing a letter that isn't even in the word. I've always had fun taking the piss out of my British friends over this.

@@HansDelbruck53 Ha its all good, but for us there is an 'i' in it that's all.