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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
jasonbourne52's avatar
jasonbourne52
2,863 posts
 
+1 noromance! A subsonic filer is the best solution here! All phono stages should have a low filter. Placing a TT on a heavier base will not fix this. It is inherent in LPs. It wastes amplifier power!
Ag insider logo xs@2x
cleeds
5,948 posts
 
jasonbourne52
... A subsonic filer is the best solution here! All phono stages should have a low filter. Placing a TT on a heavier base will not fix this. It is inherent in LPs. It wastes amplifier power!
Rumble does indeed waste amplifier, but it's not "inherent in LPs." In fact, the source of rumble is not usually the LP itself, but environmental factors. Filters are just a Band-Aid that treat the symptom - the best solution is to use proper isolation and prevent the rumble at the source.
noromance's avatar
noromance
9,769 posts
 
but it's not "inherent in LPs.
Not entirely true. Rule breaking by exception. While the vast majority do not flutter my cones, I have a small number of albums that make woofers and subs do that.
noromance's avatar
noromance
9,769 posts
 
While recommending subsonic filters to get the new user a fix, it is definitely worth attempting a better mount with the springs. The Rega is likely too light to go directly on the springs but may benefit from a heavy intermediate support.
artemus_5's avatar
artemus_5
1,930 posts
 
Great info. Thanks for the links to subsonic filters @noromance . Though I haven't had any problems lately but in the past I have had problems where my subwoofer(s) go into a frenzy. Though it appears to have been just one of them which was the closest to the TT. I assumed it to be airborne feedback from the sub through the cartridge which then looped back. IOW, feedback loop. The question then is whether the subsonic filter would take care of it. OR is this the same problemthat our OP is facing? 

@ hleeid , Thanks for the thread. Its a good topic.
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