KUBE 12b Subwoofer

I was able to get one of these added into our newly finished basement theater. It sounds great! I will admit, at first, I was that kid that wanted everything to sound bassy, and the house to move on every note; so I was slightly disappointed when the Marantz AVR did its calibration setup, and had the subs (using an old Sony sub on the right side) at lower levels. It didn't rock the house on every note! So... I turned those channels up, only to find that I really didn't want to hear that much bass in everything. I took it back down to the calibrated settings again, and put the crossover at 60, and watched an action movie. The house moved when it needed to, It sounds and feels great!!! One movie that really moved me was "T-34", a tank movie. Previously serving in the Army, that movie took me back to my days as a tanker. It was great!! The "FEEL" of the shots, impacts, droning engine, tracks, etc, was so realistic!! This sub gave me exactly what I needed.
And yes, at some point I will replace the old Sony sub, to make a Kef 12b duo. It looks classy too.

I'm currently running dual KEF Kube 12b subs and could not be happier. I think their sound quality is outstanding, and they'll play flat BELOW 20 HZ! They perform better than their specs say they should, with many other products it's the opposite. If you're looking for a subsonic subwoofer for music and home theater, you should check the KEF Kube 12b out. I think it's a truly incredible buy.

I was looking for a relatively small sub for my medium sized basement home theater. I needed some extra low end reach for my Goldenear Triton Three speakers and surrounds. The KEF fits the bill perfectly, even the matches the look with the gloss top and fabric sides. The KEF is an understated sub that does not draw much attention, which is good for the decor and spouse approval. As for performance, it is unbelievable! Now movies and music have some extra depth (but not bloat) from the Kube 12b. The real world measurements are impressive. In my room, I can get a FLAT corrected EQ curve to 15Hz at about 75db from Anthem Room Correction, WOW! I did a head to head with an SVS SB 2000 and the Kube12b produced 7-8db louder response from 15-25 Hz which is exactly where I want more output. The corrected sub EQ curve for the SVS tailed off at about 18 Hz. Needless to say I kept the KEF. This is the best relatively compact sub hands down that won't overwhelm a room with its size!

If you're looking at KEF then you're probably seeking a certain type of sound quality. You're looking for responsive and tight audio that scales with volume and sounds cleaner than a space satellite construction room. My one concern going into this was that for the $500-$700 range, you wouldn't find a tight and powerful subwoofer as you only start to experience that in the $1200+ range. KEF has surprised me here! The subwoofer remains clean and tight throughout the range without any one frequency droning louder. It has sleek looks to match the quality bass sound.

I do wish there was a phase dial rather than a 0-180 switch but that's a small concern and shouldn't affect those with ample placement options. I have 2 places that I can put the sub so the sweet spot is off by a few feet but it's not a big deal because it still sounds great. The only reason I am giving this subwoofer a 4/5 for sound quality is because I have heard KEF's Reference 8b subwoofer and wish this sounded a bit more like that. The build quality and value for dollar is excellent though which is why my recommendation is 5/5.

I went to this from an SVS SB-2000 and think this sounds miles better.

Cheers and happy listening!

I added this subwoofer to the KEF LS50 W series. Although the LS50W doesn't need a subwoofer, adding it has made a great sound even more enhanced. The sound is rich, deep, but it is very clean. It balances very nicely and is controlled by the KEF app. It is the type of sound that once you experience it, you cannot go back and listen to music without it. Well made, it lives up to the KEF reputation.