Level the floor

jonwolfpell

 

That’s a big slope but just because the basement floor sunk or rose in as area, doesn’t necessarily, & hopefully not, mean the foundation walls moved. They’re most likely not contiguous.

This is a common shape on houses here.  19th/20th century Illinois; when they were first built the basement was not a useful floor, so much as a "bottom".  The concrete was poured in sometime after, with existing pipes and whatever already in place, so a perfectly level floor would have led to a ceiling hitting heads.

It's not sinking, it was made that way.

So my basement, home of my Man Cave, slopes down towards the sump pump well.  That saved my amp, subs and speakers when we had a flood in 2007!  Don't level your floor unless you are certain that this isn't an issue.

I don't really level much except the speakers, which have adjustable spikes on Sound Anchor stands, and my Thorens TD166MkII.  I had custom feet installed to replace the stock feet.  These have a leveling adjustment range of about 2", and have racket balls on the bottom in inverted cups.  I must replace the balls whenever the old ones lose their elasticity.  But according to several bubble levels, the 'table is completely level.

My wood floor is nearly identical to your slope, it is down 3/4" within the first 24" from the wall, then very little slope after that.

My existing rack, bentwood and glass has supports in the back and sides.

I cut new end ’feet’, hard maple, and tapered, 3/4" higher in the front. Note, they extend a few inches past the back and in front of the rack. Big screws with lock washers hold the new supports to the existing end pieces. Not only level, but increased stablility due to extension of the supports..

Again, trying to understand the problem. The only item which MUST be level is a turntable, and that is usually easily fixed.

Otherwise, so long as your floor is flat there's no real issue I can detect.

eric,

even if the turntable is leveled, in OP's case by putting 1" high 'lifters' under the front feet

if your rack is pitched forward under the turntable, the combined weight of all other components is also pitched forward, fronts of each piece lower than the rear, add the combined weight of my 3 glass shelves pitched forward: any vibrations will more readily rock the rack forward then back ...., it is far better to level the rack and have all the combined weight be a downward force.