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REL Acoustics T/Zero MKIII Subwoofer, 6.5 Inch Down-Firing Driver, High Gloss Black

4.5 4.5 out of 5 stars 57 ratings

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Purchase options and add-ons

Brand REL Acoustics
Model Name MKIII
Speaker Type Subwoofer
Connectivity Technology RCA
Special Feature Bass Boost

About this item

  • Experience home theater and music as the artist intended with the most award winning high end subwoofer brand, REL Acoustics. The Tzero MKIII enriches modest systems with deliciously sumptuous natural bass, high quality construction, and gorgeous finishes. Features high quality long throw drivers and powerful, reliable amplifiers. Makes music and cinema sound more natural with enhanced spatial resolution. Increases the soundstage depth and imaging for a truly high end experience.
  • Perfect for stereo or home theater systems. Matches well with smaller more modest systems. Use a single Tzero MKIII for rooms 100-200 sq. feet or a Stereo Pair for rooms 200-400 sq. feet
  • Closed Box, down-firing 6.5" long-throw steel chassis driver, 100 watt Class D amplifier with High Level Neutrik Speakon, Low Level single RCA, and .1/LFE RCA inputs, -6dB @ 37Hz in room frequency response.
  • No assembly required. Comes with manual, power cord, and 10M (33 feet) High Level Speakon connector
  • WARRANTY: 3 years parts and labor on new products. Covers all REL products and parts that are defective in material and workmanship. We will, at our sole option, repair or replace any defective parts free of charge. The warranty is no transferable.
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Product Description

Serie T

REL Acoustics Tzero

Serie T subwoofers are every bit a REL, just designed to enhance the soundstage in the unique spaces we live. We started with the end user in mind, taking into account the challenges and opportunities smaller studios or apartments and studies or home offices present. Tzero reflect this end-use design, providing the fast, deep, substantive bass RELs are renowned for producing in a form that doesn't just accommodate these spaces, but leverages their unique qualities. Tzero enriches even modest systems with power and natural bass, bringing the quality and full REL connectivity suite, long throw drivers and powerful, reliable amplifiers to a new lower retail point and dimension.

Our Story: We make subwoofers. That’s it. Nothing else. No distractions. Nothing to steal our focus. No kidding ourselves that we can be good at everything. No trying to conquer the whole world. We just do our best to conquer our bit of it. From the beginning this has been a labor of love, born from a desire for a more perfect sound experience. It began with one man’s dissatisfaction with the performance of subwoofers available at the time. That search for better, that pursuit of perfect sound remains the driving force behind REL. It has persisted through changes in ownership, it has driven massive advancements in technology and innovations in designs. Turning loose the power, the drama and the fun that lies within great music and movies.

Our Purpose: Each day we come in to work in pursuit of only one intention, to produce the most raw, perfect, pure sound possible, to capture the raw intention of the artist. We use the best quality materials, employ the most exacting construction requirements. We think of the problem holistically. We pursue the chase of the perfect experience of sound with an obsessive passion and vigor.

We do it because we love sound. We believe sound can move people more than any other sense. We believe it’s the integration of the bass via the perfect subwoofer that makes everything else better. And, ultimately, there is a great deal of satisfaction to be gained from doing this well, creating something of unique quality, such that you know it is going to inspire. It makes the hard work and the obsessing over each and every detail worth all the effort. That’s our reward.

Our Way: We obsess over the details, never satisfied, never finished, constantly refining, simplifying, building iteratively upon what has come before. This is the path to perfection, a never ending pursuit for better. We view the challenge simply, as the need to transform electrical currents into soundwaves that can extend the capabilities of loudspeakers. We then approach the situation holistically, looking at every aspect of the bass engine and improving any weakness or shortfall. Constantly testing and experimenting with new materials, engineering or design. Always striving to add more value with every improvement by delivering sound experiences, timeless beauty and reliability that outweigh their cost.

We take this approach on every model, no matter its size or cost. Because we believe the pursuit of prefect sound is a worthy endeavor, one that can start anywhere and last a lifetime. We hope you’ll join us.

The High Level Cable Separates REL From the Pack

Using the High Level input is always the best option. Using the High Level Input, instead of the Low Level Input, and connecting to the speaker output terminals of your amplifier is one of the unique secrets of REL’s success. When using the High Level input, your REL is fed the same signal that your main speakers are receiving. When connecting to the High Level input on the REL from the amplifier, you capture the sonic signature of your main system, including the tonal balance and timing cues of the entire electronics chain. This is a very important point and together with REL’s Active Bass Controller (ABC), ensures far superior system integration of the sub-bass with the main system.

REL, Acoustics, Set-up, Positioning, configuration

REL, High Level, Connect, Connection, Hook, Set-up, setup

REL Theater Reference

1. PLACE

Ideal positioning is located in one of two front corners nearest the location of the screen and main speakers. Corner positioning reinforces deep bass and produces more efficiency, output for a given volume setting. Take care to turn the sub inward at approximately a 45-degree angle to obtain best release of low notes.

* These are recommended best practices for positioning a REL Subwoofer, always refine placement and angle by ear.

** To obtain optimal performance from a REL subwoofer and extend the performance of your speakers, your main speakers must be setup properly. Always follow the setup instructions from your speaker manufacturer first, before setting up your REL.

2. CONNECT (Stereo)

For Stereo/Home Theater applications use the High Level input. When using the High Level input, your REL is fed the same signal that your main speakers are receiving.

If High Level connection is unavailable: Connect via Low Level with a RCA cable from your sub-out or pre-out on your processor or AV receiver.

.

3. CONNECT (Theater Reference)

REL Theater Reference is when you connect High Level and LFE. It's important to connect High Level even for Home Theater. REL Theater Reference supports your main speakers turning them into a truly full range (20Hz-20,000 Hz) speaker while also provide Low Frequency Effects (LFE) during those subsonic part in a surround sound mix.

Home Theater Applications:

In addition to the High Level Cable also connect the LFE/.1 input. This input should only be used when connecting your REL to a Theater system. The LFE/.1 input can be used simultaneously with the High Level or Low Level input for seamless transition from Stereo to surround sound.

3. TUNE

Subwoofer, Phase, Set-up

Corner Placement

REL Acoustics, Orientation

Fine Tuning, Subwoofer, REL Acoustics

1. Phase

Move the phase switch from 0 to 180 positions and listen for whichever position is loudest or fullest. That is, when the position is working in harmony with your main speakers, reinforcing bass not cancelling it.

2. Corner Fine Tuning

With the REL fully into the corner, and pointed to the opposite corner, continuing to play the music, slowly pull the REL from the corner on the diagonal, line to opposite corner, equidistant from both side and rear wall. At a certain point the REL will audibly play louder, go lower in frequency extension, and truly pressurize the room.

3. Orintation

Rotate the sub on from an imagined center point at the rear of the REL listening for the greatest level of output.

4. Final Settings

Now move both the High/Low Level control and Crossover control to 10 o’clock settings (15 clicks from minimum). In most cases this is just about where the settings will end up. The Level control should be at a setting where you can hear the REL even with the main speakers playing. This is Generally 15 clicks +/- 3 clicks. The Crossover control should be set to where the sub bass is not overpowering or sloppy. It should be in time with the impulses of the main speakers so you can hear the depth and dynamics of the low frequencies. Again, this setting is generally 15 clicks +/- 3 clicks.

REL Acoustics T/9i Powered Subwoofer REL Acoustics T/7i REL Acoustics T/5i Powered  Subwoofer REL Acoustics Tzero MKiii
T/9i Subwoofer High Gloss White T/7i Subwoofer High Gloss White T/5i Subwoofer High Gloss White Tzero Subwoofer High Gloss White
Customer Reviews
4.1 out of 5 stars
43
4.3 out of 5 stars
16
4.1 out of 5 stars
10
TYPE Front-firing active driver, down-firing passive Front-firing active driver, down-firing passive Closed Box, down-firing drive Closed Box, down-firing drive
ACTIVE DRIVER SIZE & MATERIAL 10 in., 250mm long-throw, FibreAlloy inverted aluminium dust cap, steel chassis, white cone 8 in., 200mm long-throw, FibreAlloy inverted aluminium dust cap, steel chassis, white cone 8 in., 200mm long-throw, FibreAlloy inverted aluminium dust cap, steel chassis, white cone 6.5in., 165mm long-throw, steel chassis
PASSIVE RADIATOR SIZE & MATERIAL 10 in., 250mm long-throw, inverted aluminium dust cap, steel chassis, black cone 10 in., 250mm long-throw, inverted aluminium dust cap, steel chassis, black cone - -
LOW FREQUENCY EXTENSION -6dB at 28 Hz -6dB at 30 Hz -6dB at 32 Hz -6dB at 38 Hz
INPUT CONNECTORS High Level Neutrik Speakon, Low Level single RCA, LFE RCA High Level Neutrik Speakon, Low Level single RCA, LFE RCA High Level Neutrik Speakon, Low Level single RCA, LFE RCA High Level Neutrik Speakon, Low Level single RCA, LFE RCA
POWER OUTPUT & AMPLIFIER TYPE 300 watts (RMS), Class A/B 200 Watts (RMS), Class A/B 125 Watts (RMS), Class A/B 100 watts (RMS), Class D
WIRELESS CAPABILITY Arrow (Optional), Zero Compression Single Large Scale Integrated Chip Arrow (Optional), Zero Compression Single Large Scale Integrated Chip Arrow (Optional), Zero Compression Single Large Scale Integrated Chip -
W X H X D 13 x 15.2 x 16 in. 12 x 14.3 x 15 in. 10.5 x 12.5 x 12.7 in. 8.5 x 9.5 x 10.5 in.
NET WEIGHT 41.3 lbs. (18.7 kg) 36 lbs. (16.3 kg) 26.5 lbs. (12 kg) 15 lbs. (6.8 kg)
FINISH High Gloss Black, High Gloss White, 5 coats High Gloss Black, High Gloss White, 5 coats High Gloss Black, High Gloss White, 5 coats High Gloss Black, High Gloss White, 5 coats

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Price-10% $449.00
Typical:$498.00
-10% $629.00
List:$699.00
$899.00-13% $1,299.00
List:$1,499.00
-9% $999.00
List:$1,099.00
-10% $629.00
List:$699.00
Delivery
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Get it as soon as Wednesday, Apr 3
Get it as soon as Wednesday, Apr 3
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Customer Ratings
Quality of material
5.0
4.8
5.0
4.5
5.0
4.8
Value for money
4.8
4.5
4.7
4.5
4.6
4.5
Sound quality
4.8
4.1
4.7
4.8
5.0
4.1
Accuracy
5.0
5.0
5.0
Sold By
REL Acoustics
REL Acoustics
Huppins
REL Acoustics
REL Acoustics
REL Acoustics
speaker size
6.5 inches
8 inches
8 inches
10 inches
8 inches
8 inches
power source
Corded Electric
Corded Electric
Corded Electric
Corded Electric
AC
Corded Electric
connectivity tech
RCA
RCA
USB
RCA
RCA
RCA
speaker type
Subwoofer
Subwoofer
Subwoofer
Subwoofer
Subwoofer
Subwoofer
mounting type
Floor Standing
Wall Mount, Floor Standing
Tabletop
Floor Standing
Floor Standing
Wall Mount, Floor Standing
weight
15 pounds
26.5 pounds
12.25 kilograms
41.3 pounds
36 pounds
26.5 pounds
control method
remote
remote
application
application
remote

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What's in the box

  • 10 meter high level cable with Neutrik Speakon Connector, User manual and power cord
  • Product information

    Warranty & Support

    Product Warranty: For warranty information about this product, please click here

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    REL Acoustics T/Zero MKIII Subwoofer, 6.5 Inch Down-Firing Driver, High Gloss Black


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    Customer reviews

    4.5 out of 5 stars
    4.5 out of 5
    57 global ratings

    Customers say

    Customers like the sound quality, quality and size of the speakers. For example, they mention it has an incredible sound, tight punchy bass and is perfectly integrated bass/mid bass support. They appreciate the compact size and say it's well built. Customers are also impresseded with the sleek design and the fast 6.5 in driver.

    AI-generated from the text of customer reviews

    13 customers mention10 positive3 negative

    Customers like the sound quality of the speakers. They mention that it has incredible sound from such a tiny elegant enclosure. They also appreciate the tight punchy bass, fast bass, and perfectly integrated bass/mid bass support. The floating mid bass does not get buried by bloated, sloppy base, and there was no loss in music overall. Overall, customers are happy with the sound performance of these speakers.

    "...Fast and tight, floating mid bass not buried by bloated, sloppy base, but supported by an accurate foundation maybe the hardest to reproduce in a..." Read more

    "...If you want to listen to balanced, but present sound, this is all you need. Exceedingly well built. It's just really nice...." Read more

    "...It was filling in the low end so there was no loss in music overall and gave it a more complete sound.Wow...what a difference.Bob David" Read more

    "...The bass is tight , playful and on point. I spent the last six hours playing records of a variety of genres and they all sound great ;even classical...." Read more

    6 customers mention6 positive0 negative

    Customers are satisfied with the quality of the speakers. They mention that it is high quality, exceedingly well built, and supported by an accurate foundation. Customers also appreciate the tight, playful, and on point bass.

    "...mid bass not buried by bloated, sloppy base, but supported by an accurate foundation maybe the hardest to reproduce in a 2.1 system...." Read more

    "...Exceedingly well built. It's just really nice.Highly recommend isolation feet. Specifically IsoAcoustics Iso-Pucks...." Read more

    "Built like a little brick. It's great for music. With the 6.5 in driver It's fast and keeps up with the music plus it's a real looker." Read more

    "...The bass is tight , playful and on point. I spent the last six hours playing records of a variety of genres and they all sound great ;even classical...." Read more

    6 customers mention6 positive0 negative

    Customers like the size of the speakers. For example, they say it's very compact and handy for traveling and for car use. They also say it sounds great and is perfect for a small office. Customers also mention that the bass is tight and concise, and fits with the soundstage without overpowering.

    "...Fast and tight, floating mid bass not buried by bloated, sloppy base, but supported by an accurate foundation maybe the hardest to reproduce in a..." Read more

    "...Tight, concise bass that fits with the soundstage without overpowering. If you want thump in your chest, this ain't it...." Read more

    "...Its so cute and tiny i can fit it in the corner behind my desk.connections..." Read more

    "...This one sounds great and is perfect for a small office. Fills the lows in perfectly with my studio monitor speakers." Read more

    3 customers mention3 positive0 negative

    Customers are satisfied with the appearance of the speakers. They mention that it has a sleek design and a glossy black finish. They appreciate the incredible sound from such a small elegant enclosure.

    "...designthis thing is sleek looking, I love the gloss black even though it will be a pia to keep nice...." Read more

    "...With the 6.5 in driver It's fast and keeps up with the music plus it's a real looker." Read more

    "Wow, incredible sound from such a tiny elegant enclosure. Warm rich base...." Read more

    3 customers mention3 positive0 negative

    Customers are satisfied with the speed of the speakers. They mention that with the 6.5 in driver it is fast and keeps up with the music. Additionally, they appreciate the instant upgrade to their system with a minimum of fuss.

    "...Fast and tight, floating mid bass not buried by bloated, sloppy base, but supported by an accurate foundation maybe the hardest to reproduce in a..." Read more

    "...It's great for music. With the 6.5 in driver It's fast and keeps up with the music plus it's a real looker." Read more

    "Instant upgrade to my system with a minimum of fuss..." Read more

    3 customers mention3 positive0 negative

    Customers appreciate the speakers for their value. They say it provides an unbelievable bang for the buck with the perfect amount of added low end.

    "...its the perfect amount of added low end. it just seams like my Vanatoo T0s now have 6.5 inch woofers instead of 4 inch...." Read more

    "High quality on an affordable price for smaller rooms...." Read more

    "Unbelievable bang for the buck!..." Read more

    Top reviews from the United States

    Reviewed in the United States on June 20, 2021
    6 people found this helpful
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    Reviewed in the United States on January 17, 2023
    4 people found this helpful
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    Reviewed in the United States on July 26, 2023
    2 people found this helpful
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    Reviewed in the United States on August 2, 2022
    12 people found this helpful
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    Reviewed in the United States on January 26, 2024
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    Reviewed in the United States on March 6, 2022
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    Top reviews from other countries

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    Suneal Verma
    5.0 out of 5 stars Works well with Focal speakers when bought as a pair
    Reviewed in Canada on February 25, 2023
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    Suneal Verma
    5.0 out of 5 stars Works well with Focal speakers when bought as a pair
    Reviewed in Canada on February 25, 2023
    The Rel T Zero work well as a pair. I would probably have gone with a pair of the T5i’s if I had the budget. The Tzeros do work well without over powering the room. I actually tried the first Rel Tzero on my surround sound system on the main level and it worked very well. It added a dimension to the sound that was clearly missing from the Paradigm in ceiling speakers. I then moved the unit downstairs and added a second Rel Tzero. Very happy with the fast performance of the sub. Snappy bass perfect for music. Definitely recommend using a pair with floor standing speakers.
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    One person found this helpful
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    Luca Armigliato
    5.0 out of 5 stars Buon acquisto
    Reviewed in Italy on January 19, 2024
    petkoo
    5.0 out of 5 stars Stereo system
    Reviewed in Germany on October 12, 2021
    One person found this helpful
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    Jim Hubbert
    5.0 out of 5 stars Great service
    Reviewed in Japan on November 17, 2022
    Amazon Customer
    5.0 out of 5 stars small footprint, big sound
    Reviewed in Canada on September 17, 2022