Naff old 3-tier Sound Organisation floor rack for my LP12 - I’d never trust my DIY skills enough to try a wall-mounted shelf!
I did upgrade the top MDF shelf for a fancy £20 stiffer shelf decades ago though - it may even have come via a hi-fi mag promotion.
If you can see my post above ProJect make 4 wall mounts for TT
I have exactly the same reservation , I am to DIY what Shirley Crabtree was to ballet dancing
Rega recommends light and rigid shelf too. I however use a 5 cm granite slab which works wonderfully under my Rega P10. Sometimes manufacturers recommending is not completely true. There are so many other examples.
On a shelf? That slab must be pretty heavy? 20kg+?
No, on a rack. Lovan rack, next to a Fraimlite.
Loved the wrestling as a kid. Highlight of my year when we had Big Daddy, Giant Haystacks and a bunch of others at our local ‘rec’ in the 70’s 
That and ‘Roller Disco’ were ‘dope’ 
IME even a good wall shelf just doesn’t make a TT (mine is LP12) sound as good as the top shelf of a Fraim/your preferred floor standing support. I’ve used Target and Tiger Paw Vulkan. Both lost something crucial vs top of Fraim.
I really wanted the shelves to work for logistical reasons, but sadly no dice. The 552 is very jealous of my LP12 getting top billing !
The engineer in me thinks a cantilever is an inherent problem vs being supported directly to ground in all 4 corners if the TT is high mass.
I can understand how a lightweight Rega on lightweight wall shelf might work much better than an LP12 on a wall shelf.
@Chris SU,
Fair enough and thanks for reminding us about Aerolam - wonderful but not exactly easy to machine. I am not surprised it did a better job than the MDF that you had - of that I still have in my Targett support now.
It is a long time since most speaker makers were convinced spikes were pointless or since anyone told us that CDs offered “perfect sound forever”, and what little guidance most offer now on how to use their products will
probably be right - for an average user in an average room.
It could be that everyone on this site and others who has put a chunk of wood or stone or a heavy-ish platform under their turntable (or put new feet under a Naim box) has weird taste or ears or is suffering from a strange syndrome involving having lots of excess cash despite being daft as a brush.
It could also be that at least some of them are right for their room and the volume they like. I’ll be able to venture a slightly better informed opinion on this after I have actually tried this myself (at home, with no woo-salesman present).
I don’t think there is anything wrong with Pro-jekt at all, though their core success has thusfar been on less grandiose/ heavy/ expensive sources than an LP12. More importantly, like Rega, they make very good unsuspended turntables, and make (very good value and perfectly suitable) wall mounts to support them. Many users here of that kind of turntable are happy with those supports, though other people have tried other gadgets and some of those then bought them.
@KJC - Interesting - thanks. In what way did the Vulkan lack something that the Fraim remedied? Compared to 5+ layers of Fraim, a Vulkan is certainly more ‘light’, if not more ‘rigid’.
More generally, I can only agree completely from an engineering point of view- wall brackets mean different (and potentially greater) compromises and inherent weaknesses. However, isolation is an issue of resonance and speed of energy dispersion and lots of other messy complexities, not one of static stress.
I suspect, for example, that any vaguely simple engineering model (of the sort that I could still follow without having to go back to college) would show that every device should really be on a 3-legged support, but that isn’t what people actually do.
Using a Fraim would also mean my rearranging my living room in a fairly major way and abandoning a piece of furniture I like - not something to do lightly.
More important, many of us have bouncy floors or a lack of appropriate space or small children or some combination of those, and so want the turntable on a wall.
I don’t think such a generalization is valid. That’s very turntable dependent. For example, my Clearaudio is a very different design than your LP12. Moving it from my Solidsteel wall shelf to the top of my Fraim did not improve the sound. If anything it was better before. Once I move my system from its current room to the larger living room, the Solidsteel will go back on a wall to support the table again.
Managed to see Marc Rocco V Marty Jones a couple of times, they could lift the roof off many a building
For many of it’s not really a choice as @NickofWimbledon points out, in that having things like floating wood floors or flexing floorboards (e.g. due to slightly soft/springy/uneven joists) means that siting an LP12 on Fraim can mean the deck bouncing as you get near to it 
I’ve a relatively cheap TT shelf, with thin smoked glass, which appears to exhibit some flex (unlike Fraim glass). I tried using a 3-point Fraim set-up on it as 2 x isolation (cups/balls/Fraim glass) and it was a disaster. Sound went ‘off’.
I asked an SME dealer what wall supports they suggested for an SME20 and got met with a blank face, partly as not much can support the weight of one of these. I know these things have fantastic isolation but many larger homes are pre-war and have dodgy floors.
As someone hoping to try 10kg of granite under 11kg of LP12, on my Targett wall bracket, and hoping that it all stays attached to the wall throughout, I sympathise with the issue facing owners of any heavy deck, SME included.
Thanks @Debs - that’s a rather better all shelf than mine. As mentioned, if those were still available, I probably wouldn’t have started this thread but would just have bought one and then experimented with whether putting things between shelf and LP12 makes things better or worse.
Are you concerned that the granite option will sound terrible or that fall off the wall with catastrophic results?
I’d be happy to compare a glass shelf instead of or as well as the Targett’s existing shelf if I had one? What glass did you buy?
I’d also be happy to compare cups-and-balls with the HRS Nimbus feel that will be here on trial next week. What exactly have you got there?
Thanks again.
Both 
3 x Naim fraim balls & holders are about £30 GBP here, from all good naim audio dealers.
The glass is 10mm (toughened?) 452 x 340mm
It would be cost effective to buy the shelf from a glass merchant who can smooth the edges for safe handling.
A glass shelf would look better on your Target shelf than how it looks on a Vulkan which has a kind of Fokker triplane look about it 
An option would be to get a wall shelf such as the Pro-Ject WM1 and replace the laminate shelf with a glass shelf and either drill 4 small “holes” or glue on 4 small spike cups so that the glass shelf does not slide off the spikes if accidentally pushed. I have that Pro-Ject wall shelf under my LP12 and it’s quite good - but haven’t gotten around to the glass shelf part myself, yet!
@NickofWimbledon, are you up for some DIY?
@nitrous - thanks but for me DIY is something that happens in scene one of Casualty.
@debs, thanks again. I will try Fraim balls and cups and a glass shelf as well as trying the suggested HRS kit. I will also be cautious about putting too much on the shelf, for obvious reasons, and will check weight as I go.
Also please excuse my typing.
