SKU: 88645530364

REL Acoustics Tzero MKIII - Closed Box Down Firing Subwoofer

Sale price$427.05 Regular price$474.50
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Description

REL Acoustics Tzero MKIII - Closed Box Down Firing SubwooferTzero MKIII Tzero MKIII is every bit a true REL, just smaller. It enriches even modest systems with power and natural bass by bringing the quality and full REL connectivity suite along with an all new aluminum cone that provides much greater stiffness to the driver for punch and a powerful, reliable Class D amplifier, all at an attractive price point and size. Ideal for apartments, flats, studies, anywhere space is limited. Miracle In Miniature 100%

Tzero MKIII

Tzero MKIII is every bit a true REL, just smaller. It enriches even modest systems with power and natural bass by bringing the quality and full REL connectivity suite along with an all-new aluminum cone that provides much greater stiffness to the driver for punch and a powerful, reliable Class D amplifier, all at an attractive price point and size. Ideal for apartments, flats, studies, anywhere space is limited.

Miracle In Miniature

100% REL, Just Smaller

Tzero is, in many ways, the most difficult design we have ever executed because never before have we delivered so much for so little. Five coats of your choice of black or white high gloss lacquer as in all Serie T, NextGen Class D amplifiers, our famous High Level Input, plus a separate .1/LFE input stage with its own volume control to get theatre levels AND music perfect without racing to adjust or looking for a remote control.

The jewel of the MKIII is the new aluminum-coned driver, a rugged 6.5” unit with exceptional output and low bass extension for its size. While it won’t drive medium or large rooms hard, we make plenty of larger models that handle that task, Tzero MKIII remains a miracle in miniature

Scaled for the Simple Life

Compact Power & Finesse

At REL every design begins by defining and designing the best bass engine for a given application. With its new aluminum-coned long throw 6.5” driver, the MKIII is powerful and articulate, delivering surprisingly deep bass. Able to fill smaller spaces effortlessly. Have a much larger space? Turn to one of our larger models, there are plenty to choose from.

Outsized Performance

Bass Beyond Its Size

At REL every clean sheet design begins by defining and designing the best bass engine for a given application. While the long throw 6.5” is our smallest-to-date, but make no mistake it is powerful and articulate, able to fill medium-sized rooms effortlessly. Have a much larger space? Distribute them throughout for an unobtrusive spacious presentation of music and film sound.

Brains & Brawn

Right Sized Power & Control

Though Tzero MKIII is REL’s entry level, that doesn’t mean it can’t punch far above its weight class. 100 high-current watts from a NextGen Class D amp means it holds its head high and is capable of delivering many years of satisfying performance. We feature the same high-quality input filters, crossovers and limiters as our larger models. Tzero MKII includes a full REL connectivity suite, fast 8ms delay filter set and our famed High Level Input as well as a separate .1/LFE input with its own level control and a standby circuit that reliably comes alive at very low levels.

Reviews + Awards

“I can say without a doubt that these tiny REL’s excelled in becoming one with my monitors in a way I’d never really experienced prior…. Overall I fell in love with these little REL’s. They’re small, WAF (Wife Acceptance Factor) friendly, and in the right circumstances would be all you’re looking for in a two channel system.” Read More +

Matthew Philpot, Everyday Audiophile

"This is The Little Sub That Could. The REL T-Zero isn’t meant to be compared to the big guns, but in a way the small-cones make them extremely fast, and that is a perfect foil for high performance audio systems.” Read More +

Alan Sircom, Hi-Fi+
Shipping Notes
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 88645530364

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NICHOLAS K. LEE
New York, US
★★★★★ 1
Extremely Overpriced
Number of Items: 4
It doesn’t hold charge too long , especially if it’s not on a perfectly bright sunny day without clouds. Even at that , It will only be able to light up for maybe two or three hours at best , and not very bright at all. Construction and materials are of good quality that’s why the one start or else zi would gave given a zero if i could. it is way overpriced for what it is. I am disappointed for what I paid and the amount of production I get from it. Would have returned it if I haven’t installed them and threw away the boxes.
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Reviewed in the United States on December 9, 2025
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Twist
Birmingham, US
★★★★★ 5
Quality enclosure and battery. Looks great.
Number of Items: 4
Quality metal enclosure. Look great. Two color levels. Charge even in indirect sunlight just fine. I have now bought 12 of these lights.
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Reviewed in the United States on November 1, 2025
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Mary
Cuba, US
★★★★★ 5
Very durable and designed to last a long time
Number of Items: 2
I've had a pair of these lights for 7-8 years and would still be using them with no issues if a naughty racoon hadn't taken an interest in them and broken the glass on one of them. I was delighted to find that the identical looking ones (operate slightly differently) were still available. They are extremely simple to put together (just screw together the durable metal pieces) and turn them on to the chosen brightness. It couldn't be much simpler. I also have other Gama Sonic solar lights and they are every bit as good.
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Reviewed in the United States on May 4, 2024
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Chris J. Cammack
Pawtucket, US
★★★★★ 3
Gama lights
Number of Items: 4
3 out of 4 are great. One did not work right away. Company send 2 extra battery packs. But still one bad unit. Talking now about options. Company seems to have good customer service. But bad light definetly an issue. 1 of 4 bad.
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Reviewed in the United States on June 9, 2026
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Richard
Waukegan, US
★★★★★ 5
74 monte carlo Resto
Model: NewSLS50_52
Great product easy installation with sheets cut to size,using for Classic car Restoration,floor pan and doors
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Reviewed in the United States on May 26, 2026

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