I just saw a video of someone showing of their kef R3 (non meta) and they had strong woofer excursion (the woofer driver moving in and out). And out of curiosity I checked my R 3 meta and they don’t do that at all. I do hear the bass clearly and pretty strong but almost no visible movement in the woofer.
The video: https://youtu.be/jDb1QswKY8k?si=GTOpNsS1R6zeBVXR
In the comments of the video he says it is filmed with no slo mo camera mode on iPhone.
I there something wrong with my r3 meta?
Yeah…don’t do that. They do it for a quick demo video with speakers they are borrowing to review, essentially. If you play a 25hz test tone you can do the same, and you can also cook your drivers if you want.
That is my youtube video , i still have the KEF R3 speakers , i have them for 1.5 years now.
The KEF R3 can handle a lot of power. If you watch a movie with them you can see the drivers move just as much. In movies there are lots of very low frequencies and if you don’t filter the low frequencies out of the signal that the main speakers get the drivers will move the same amount.
Just be carefull and don’t do this much excursion for too long because it will overheat the voicecoil
The likely answer is they are playing a record which combine with warps is having feedback issues. Likely the turntable is too close to the speakers and of a crap design common with cheap turntables.
Yeah, make sure you have enough power to be asking your speakers to move this much. More power is better when controlling the woofers… clipping makes square waves and can damage the speakers and the amp.
When you see these videos on YouTube people often play tracks that are mixed in such a way they play bass notes that fall far below 20hz, emphasising xmax on your woofer. That paired with high spl means “make woofer move big time”
Hi 😊 That youtube video is from me 😎
Be careful , it’s okay for these speakers to have this much excursion for a short period but you don’t want to to this for too long because it can overheat the woofers or if you play them too loud it can destroy them instantly
Could this be an effect similar to wheels turning the wrong direction in old Western movies? You might see a (nonexistent) movement because the membrane moves in frequencies close to multiples of the frame rate, with which the video was shot.
Look up your woofer xmax. You should be fine as long as you stick to hitting that and your amp is happy with it. A decent driver can do its xmax all day. Look up it’s xmech as well. Should be okay to get close to that at least for brief moments as well.
This is how far cheaper speakers actually move, because they are capable of playing low frequencies at audible levels.
I have tried the same track with my R3 non meta, drivers didn’t move as much. I m using Arcam SA30. My REL T9X does a lot of drama though for the same track. Note that there is no crossover set… T9X is connected using high level cable to the SA30. I used Apple Music via AirPlay 2.
Turn up the volume and you will see the woofer excursion of the KEF R3 😎