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KEF Gravity One - review & soundcheck

2016-12-01
good evening ladies and gentlemen and welcome to a review of the keV Grady one the latest portable Bluetooth speaker from keV in collaboration with Porsche Design after the keV Muir the Kebra t1 is the second portable bluetooth speaker by keV and one of the most premium products on the market right now currently it cost around 380 dollars or euros and it comes in a very beautiful packaging as you can see there is a charger included also a USB wire so the speaker can be charged by micro USB it can also act as power bank to charge external devices and hence we is included as well but I would rather like to concentrate on sound and technical details as a little bit has changed compared to the key from you on the Cape grade you want still consists of the same two drivers one of them being a unique u driver but now they are positioned aiming upwards to give you a more on the directional sound so regardless from where you listen you should get more less the same sound thanks to the unique u driver which consists of a Twitter together with a buffer you will really get a nice sound dispersion also off axis and compared to the cave Muir the capability one now has two passive radiators built in which work in an opposing way to minimise vibrations the cave Muir vibrated quite a lot because of the mass of the vibrating Pasiphae that of course we would like to hear how it sounds but first maybe let's check out some frequency response measurements you can see one measured exactly on axis with the driver and you can see that it measures really nicely flat but bass already starts to roll off above hundred Hertz and there is a slight downward tilt towards treble so the speaker misses a little bit clarity if we have a look at some curves measured off axis with an angle of 45 and 90 degrees you can see that there is still some tread loss despite the unique you driver so the speaker definitely sounds best when aimed directly at the listener at low levels there is no kind of dynamic bass adjustment so at low levels that cave gravity 1 can sound a little bit tinny of course I would like to demonstrate you the sound how it sounds in reality as always I will be using a head cam and binaural microphones you should listen with headphones as binaural recording to acquire headphones for the best results so please put your headphones up and let's have a listen first I thought compare the cap Grady won against a show me miss pika although price-wise not quite comparable as this cost may be 1/10 of the cap I think this is still a nicely balanced and neutral sounding speaker I will start with the calf Grady one first so please have a listen let's link back and increase volume or not and although the show Mimi is not a non-directional speaker I will also place it flat so that it emits more upwards just like the calf and let's try maybe another track so now the show me also works in a more only direction away it doesn't have any Twitter's but still their dispersion is really nice yet the calf may be abuse lightly fuller but also a little bit more colored maybe so here may be a bit unfair to compare it against a very cheap speaker so I have another one and this is the Vava voom 20 but it's also more a low-budget device so this you can get this for 60 maybe 70 dollars so let's have a listen how these two compare also not an omnidirectional speaker but still I think it's a nicely balanced neutral sounding one I will start again with the calf great one and another trick oh I love for summer days when I'm with you why thoughts so much to say and not a lot to do yeah not wreck tired to get to simulate a non-directional sound and make them more comparable I will place the album airing upwards so let's listen to them again like this starting with the calf and although the bottom 20 is not meant to be used like this I think it performs really nicely here even as omnidirectional speaker we could of course try the opposite placing the cave like this in a more traditional way and let's listen again take another track I will play a dance track increase volume to maximum at the volume 20 as this doesn't have any new road or sync volume control and let's listen to them at maximum this is the capability one now yeah mixing volume the volume 20 also maximum you yeah the relevant esports quite a bit more of also manages to retain more base this one starts to compress a little late in our track but no distortion it remains me nicely restrained from all the album is five some slight dirtiness SDHC are using this becomes really teeny sounding i think you could do it well the cap great one doesn't sound bad in any way in fact it remains fully controlled regardless of volume level even if maximum there is no distortion at all but it has a tendency to sound a bit tinny especially at low levels as there is no dynamic bass adjustment and despite the omnidirectional design and a non-unique you driver there is still significant treble loss when listened effects is so it sounds best when aim directly at the listener I'm not sure the really high price tech is justified on sound alone you can get similar or better sound for much less but it's still a great looking and great design speaker but probably more a business-class speaker yeah I hope my review and soundcheck could give you an idea and some insight about the cave grady one i hope you will join me again in another video until then stay tuned have a nice time and bye bye
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