Acoustic Piano Looping

[The woodshed <woodshed@blueyonder.co.uk>]

Hi There

Can anyone give some tips on looping an acoustic piano, both grand  
and upright? I have been trying with out much success. I am currently  
using some contact mic's which go into preamps then into the normal  
stuff, laptop or delay / loop pedals.  I am having problems with  
feedback, the soundboard often picks up the Pa leading to feedback,  
and the general sound quality is not great. The live vocal looping  
thread recently had some helpful suggestions which I will try out on  
the next set.

Does anyone here loop real pianos, and give any advice on equipment  
setup?

thanks

leon