The control/connection plate fitted to the rear of the KEF KF92 is very obviously made by KEF, and the fit ‘n finish is absolutely astoundingly good. And, at $1,000 less than the R400b, you might as well get two. Newport Test Labs measured the effect of the EQ control on the KEF K92’s frequency response, the results of which are shown in Graph 3. What Hi-Fi? Most subwoofers get the job done, delivering grunt and power where your bookshelf, satellite, or even towers can't reach, but great subwoofers deliver said grunt and power more smoothly, more subtly, and with more precision. Huh? However, to inject some reality into this comment, I was listening at very high volume levels in a very large room. Despite everything I loved about its tonal qualities and high-end performance, the KUBE 12b isn't perfect. England and Wales company registration number 2008885. Refined. Review Date February 8th, 2018 by, See what people are saying about this story or others, The latest Gear, news, releases & pre-orders, First Look: Optoma's New Cinema X P2 Short Throw Projector, An Experiment In Music - The High Definition Music Card, Everything on Netflix with Dolby Vision, HDR, and/or Dolby Atmos, Editors' Choice Winners: Best Gear of 2019, Yellowstone: The First Three Seasons Limited Edition Gift Set, Harry Potter: The Complete 8-Film Collection, National Lampoon's Christmas Vacation (Special Edition), Friends: The Complete Series Collection (25th Anniversary/Repackaged/DVD), Cartoon Network: Steven Universe: The Complete Collection (DVD), Supernatural: The Fifteenth and Final Season (DVD). You can see that all three traces are around 6dB down at 100Hz, 80Hz and 60Hz respectively, so KEF’s calibration points are spot-on. (Ported enclosures also have advantages over sealed enclosures, but we’ll deal with those a little later.). It's refined. Most of the great subwoofers are big, cube-shaped things, but KEF… You won’t have to worry about support spikes marking your polished wooden floor, because the KF92 comes with four conical rubber feet pre-fitted to it. Subwoofer KEF R400b is, so to speak, a half of LF-section of Blade acoustics. The most obvious (but wrong!) Given the shared architecture, they should sound similar, tonally, and perform well at all but the lowest frequencies. Setting up a subwoofer is equal parts simple and complex. The reason for the EQ control is that because a subwoofer operates at such low frequencies – which means the wavelength of the audio signals are inordinately long – its output is dramatically affected by where it is positioned in your room relative to walls and furniture. It is, in some ways, elegant and, in others, invisible. The black trace on this graph shows the response with the low-pass crossover set to maximum (140Hz) and you can see the flatness and extension of the response is exemplary, extending from 14Hz to 160Hz ±3dB. With the crossover control set for a 40Hz turnover, the response peaks at 23Hz and is 3dB down at 18Hz and 35Hz. If you’re not into organ music, but you want a great demo of the depth and level of the bass the KEF KF92 is capable of delivering, listen to the ‘heartbeat’ on Pink Floyd’s ‘Dark Side of the Moon’ – preferably from a hi-res format rather from ordinary Red Book CD. Please deactivate your ad blocker in order to see our subscription offer. Now I heard a difference. Wrote My Way Out, from The Hamilton Mixtape, might be the perfect Q950/KUBE 12b demo, blending warm mid-tone hook vocals, crisp piano chords, and a chest-thumping beat. The first and most obvious of these is that whereas bass reflex ports can sometimes create audible noises – usually ‘chuffing’ sounds, but sometimes whistling sounds – you won’t ever get these noises with the KEF KF92 because there is no port.

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