Advice for mounting a TT shelf on a wall

Mount it away from the corners of the room.

This is a must to consider because of low frequency feedback. A corner can be a bass trap. This happened with my wall shelf and it was a pain to get rid of.

Mount it where it’s comfortable to use or you will stop using it. I agree with not putting it in a corner, but other than that, I don’t think it’s that critical unless you have a very large system played at loud volumes. 

Before mounting play some heavy bass songs and place your hands on the wall where you think you might mount the TT and just feel the wall vibrate. Move your hand around and mount where the wall doesn't vibrate as much

IMHE the advice given here is solid. I have wall mounted my turntable for the past two decades after trying various other isolation systems that failed to prevent foot falls and other environmental effects. Hard to see in my system pictures but I'm using an oversized Target PS-1 wall mount shelf which I have modified as follows:

• Weather stripping along the wall facing surface to provide further isolation from the wallboard;
• Heavy duty stainless steel screws with washers inserted between the screwhead and the inner frame to provide the strongest possible bite into the studs;
• Herbies Giant Gliders facing upwards to support the shelf instead of metal points/spikes that are standard;
• Symposium Svelte Shelf (19" X 21") replaces the particle board shelf under the turntable. 

This has worked extremely well for me and is highly recommended for those who can find a Target PS-1 on the used market. My shelf is mounted so that the stylus is at eye level when I am standing. This takes it out of the way of prying hands and also allows me to adjust and setup the table with ease. 

I couldn't be more appreciative of the comments/suggestions. The mounting bracket came in today and is as professionally made as I have ever seen. The finish is perfect, but most of all, the bracket is even better/stronger than it needs to be. So now, I will go out in the shop and choose among the wood slabs for something that will work well with this bracket. I like the idea about Herbies giant gliders. Saw them somewhere recently for sale.

 Attaching this bracket will have to be spot on as well. I want to get as close to the center of each stud as possible. And I am with the thinking that the mounting must make continuous as possible contact with the wall. I am still considering the height though. I still have time.