REL Acoustics Tzero MKIII Powered Subwoofer – 6.5-Inch Down-Firing Driver with Class D Amplifier, RCA Inputs, Compact Design for Home Theater, Stereo Systems, and Surround Sound – High Gloss Black

Unboxing I think this should have been double boxed. it was only single boxed and there was a hole in the side large enough i can put my finger in and touch the sub. but after unboxing there was no damage. design this thing is sleek looking, I love the gloss black even though it will be a pia to keep nice. Its so cute and tiny i can fit it in the corner behind my desk. connections I connected the sub to my Vanatoo T0s with a single sub cable to the lfe port on the sub. set the crossover on the Vanatoo to 125hz switched the back mode switch on the back of the T0s to bass. set the sub gain to its highest and then i can use the volume knob on the speaker to adjust the gain instead of having to go down to the back of the sub. it helped me very easily blend the sub in. you dont even hear the sub now. sounds like its all coming from the speakers. performance Its awesome. if i have the bass up to high even the little 6.5 inch driver can shake the walls. i turned it down enough to where the walls, my desk and other stuff stopped vibrating effecting the sound. How deep can this little Sub go??? How about decent output down to 30hz then still very reduced db down to 27hz but still audible . conclusion this sub is perfect for your standard 4 inch mid woofer/1 inch tweeter bookshelf speakers. 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. they just sound 2-3 times there size.

I have a good quality two channel hifi setup in my home office (12x12) and had been thinking a subwoofer would be a great way to fill out the bottom end of my bookshelf speakers (Wharfedale Denton 85th). These are nicely resolving and crisp, driven with a Rega Elex-R, but I listen to enough music with low frequencies (ambient, techno, some metal) that I felt I could use a little rumble. No need for bowel busting bass, as we're all adults here, leave that for the home theater goons. The T/Zero was the perfect form factor, so small it practically disappears in the room. Setup was easy, long cable, unfussy placement -- if you're using banana plugs it's even easier to connect to your speaker taps. I had it up and running and configured within 15 minutes. It's placed about six feet behind my speakers near the corner of the room. You could construct a system with terrific dynamic range using this sub. In my case, all the warm midrange and detailed treble is handled by the speakers with all the low-end coming from the sub; I have the crossover set fairly high to plump up the sound. I feel it would take a lot more cost and effort to duplicate these sonics in a single speaker cabinet; my office system now sounds as good or better than my reference. A great investment.

Definitely worth it for a small system within a small space. Beautiful depth. Incredible sound. The LFE output connection is so much more superior to simple audio RCA. This is unique and a trademark to KEF. Given I use this as a dedicated sub for a turntable and preamp setup the sound is incredible!

This thing integrates well with my Triangle Borea bookshelf speakers. The sounds is seamless. You can tell it's there other than the great wall of sound. REL is designed to work best with music. I'm running two tube amps, one to my speakers and one dedicated to the REL. The sound is incredible. Sub nit in pics, but that was the whole Idea of downsizing on space, but not the sound.

I ordered this and the driver wasn't mounted correctly or got moved in shipping. I thought it might have been the break-in period. After a week of poor sound quality and a fart-like sound, I realized something else must be wrong. I turned it over and the speaker seemed like it was on an angle. I returned it and got another one. This one sounds great and is perfect for a small office. Fills the lows in perfectly with my studio monitor speakers.

If you are a music lover, have small speakers, and have a small room, you are going to love these subwoofers. I see "these subwoofers" in the plural because after you buy one, you will want two. That is what I did. I bought two of these subs in a week. In my home-office setup, these little subwoofers are the perfect compliment to my little Harbeth P3ESR speakers -- probably the best small bookshelf speakers money can buy. But like all small speakers, they cannot deliver on the low end. Two REL T/Zero subwoofers round things out completely. I could not be happier, particularly with the sale price. Now ... if you have a large room and/or are into home-theater explosions and lots of bass-driven drama, these little subs are not for you. These are for music. They disappear into the room, as good subwoofers should do. Music lovers will love these little gems. Well-done, REL.

The subwoofer for a desktop setup or small rooms! It is that good that I bought two for a stereo system.l I have a 100 years older wood floors so since the driver of this subs fires down I had too much rattling so I place them on speaker stands at the same highs of the speakers and I’m amazed!!! Get them! The blue quality is above anything in the size… anything.

I was buying a sub for use with my GOLDEN EAR BRX'S which go down to around 30hz. The BRX'S are phenomenal speakers and being used for music only and driven with a MARANTZ 1200NR Amp. After connecting the REL T/ZERO SUB per the recommended method from REL using the included connector onto both speaker wires it was making a huge difference in everything. The low end in both channels now was noticeably crisper and highlighted all frequencies and especially the drums and strings. 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