Placement of electronics


I've always placed equipment on side wall about mid way along room length. (Atma MP-1, MA-1, Modified Lenco TT, Wyred 4 sound Dac 2, Maggie 1.7, strategic placement of reflectors, bass tubes, cables are top Analysis Plus and Nordost.). The sound, sound staging etc is what I've always wanted. However, I want to upgrade the interconnects between the pre- and the amps, which are 1 foot behind the speakers. Now, the length of these cables is 20 feet. The interconnects I want to use are far too expensive to run 20 feet.

Finally, the question: If I put all the equipment between the speakers, including the TT, won't I pick up more vibration issues?
128x128thotdoc
In a perfect world, I would use monoblocks behind or adjacent to the speakers (on the floor), using very short runs of speaker cable. Other electronics on the near side will or on the rear wall, behind your seat, connected to the monoblocks via good quality (but not necessarily expensive) XLR balanced cables. I agree with Buconero117, it would be great to get the the TT(s) out of the room but I doubt that many of us can do that. I settle for putting turntables as far away from the speakers as possible, preferably behind some other gear.
Jarraa, RPG makes a "acoustic screen" they call theirs the RPG Variscreen. I have 3 one to block off a stairway and 2 to block off dormer style windows...

http://www.rpgeurope.com/products/product/variscreen.html
I agree with putting all the equipment on the side but away from the first reflection. Vibration affecting the components is an issue but more importantly is the messing up of imaging. I would figure what you can spend on long cables and put the gear in the best spot. I sold my Kimber Heros and ran long ICs of Blue Jean LC-1s. I defy anyone to tell the audible difference between the two and the placement far outweighs the type of IC.
I have a CD-only system with 4 electronic components in a backless cabinet that is only 2 feet high and the speakers are pulled out at least 4 feet and this has worked very well, so I, too, second what Grannyring is saying.

But, if you can't get a TT into another room, you may want to approach it like a sub crawl, only in reverse in that, while playing something bass-heavy, you are listening for a room null along a given wall...avoiding a location plagued by standing waves.