Completely with you on that!
Curious on the stereo performance now.
So Iāve had the s510 for 3 weeks now. Itās is a big improvement over the T5x, but you would expect so, given the price. I was impressed with the T5x though, just didnāt work with isobaric speakers. The base response is much faster with the s510.
Am I sold on subwoofers? Yes I think I am. They add more than they take away. Overall very happy with the REL s510.
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What a room!
Love a large record collection.
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Yeah, me too. Thereās more. 
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Has anyone noticed a big difference in how much the subs cone excursion is with digital vs vinyl (same song).
With vinyl the cone is going crazy, even at low levels, with very little sound produced?
Itās almost like there is some inaudible low frequency in vinyl?
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You need a warp filter on your phono stage. Cuts out sub 20hz warp.
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As said above, sounds like you need a subsonic filter on your phono.
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Thanks @Thegreatroberto and @daren_p
This is all new to me, but after reading a bit it would suggest my turntable is a little noisy.
When I demo some new TTs this year, I will make sure to look at the cone excursion too. I would hope a more expensive turntable may be less of a problem?
I once had really insidious issues with woofer pumping while playing vinyl. Using a sub-sonic filter was a complete kludge and didnāt actually work. It merely masked the problem a little bit without eliminating anything wrong.
It turned out it was my tonearm. I had one of the Clearaudio arms (Magnify) with magnetic bearings and that was the entire problem. I changed to a tonearm with mechanical bearings (Universal) and the problem went away, completely and instantly.
Subsonic filters are not a panacea and donāt really help with some problems. I haveāt ever needed one since solving the problem I had with the tonearm. Whatās more the Boulder 1108 phono-stage I auditioned extensively last spring ā and now have on order ā has a low-cut filter (-3 dB at 10 Hz). I never needed it. I tried it numerous times and it never improved anything. And I have two REL S/510 in a smallish room.
I wouldnāt be too quick to recommend or engage a sub-sonic filter until you know what the root cause it. It could be issues with isolation, the turnable itself, the cartridge, and so on. A subsonic filter might just be putting a band-aide on an open wound that really needs stitches.
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My first TT was a Garrard SP25 Mk II. The bass cones danced on every record, including between tracks. Whilst warps made worse, it happened even with the flattest records. And where warps are too low a frequency to be audible unless sufficient to cause some degree of cartridge bounce, with my Garrard there was an audible rumble. In that instance the culprit was the TT idler wheel, cured by upgrading to a belt drive TT.
I suspect poor or worn bearings might also be able to cause subsonic and/or low bass rumble.
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