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Rippling cones

So after much research and advice seeking here, I made the move to vinyl.
Decided to go with a simple to set up, complete, system as I learn my way. 

I noticed the cones on my KEF LS50s rippling at anything above low listening levels.
This happens only when playing records.   The same music from CD or streaming seems ok (no visual rippling).

Is this potentially damaging to speakers?

Background hiss/pops is noticeable.  Not sure if that is a cause.  This is my first turntable.
My other speakers have grilles so haven't noticed/paid attention to this until rotating in the LS50s.

I pulled the grilles off 3 other speakers and noticed the same thing.

Gear:

Rega RP8 with stock Exact MM cartridge --> Vincent PHO 8 --> Bryston BP26 pre --> Ampzilla 2000 2nd Edition monoblocks

Other speakers tried:
B&W 801 Matrix S2s, Harbeth  SHL5+ 40s, Rogers LS3/5As

There doesn't seem to be much adjustment available on this turntable.

Anyone else encounter this?

Thanks!
 
hleeid
musicaddict
370 posts
 
A subsonic filter is a good thing. I've had albums 'pump' the woofers and it's a bit disconcerting. Now the filter is set at 15Hz and it is gone. LPs do vary on how much rumble.
Still as millercarbon mentions regarding the Townshend Pods, I'd say your analog setup is plenty good enough to truly benefit from very good suspension.
stereo5's avatar
stereo5
6,357 posts
 
@cleeds,

“Rumble filters are an easy fix for a problem that can almost always be remedied at the source. “

Certainly not in my case.  I tried every single thing that was suggested to me at that time by members here, nothing worked.  In desperation, I bought the KAB filter and thank God it worked. 
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hleeid OP
219 posts
 
@mijostyn -  ''If you want to know what is the environment and what is on the record simply put your stylus down on a stationary record and turn the volume up. Walk around the room watching the woofers. Jump a few times. This is the environment. What you see playing the record is a combination of the two.''

Just tried this. Didn't even need to turn up the volume to see and hear it.


hleeid OP
219 posts
 
@stereo5 - after removing 3 springs from each of the Audiocrast spring units to allow for compression, I noticed some audible improvement.  Still see the cones jumping around though so will probably order the KAB RF1.
Glad to hear it worked out for you!
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