Wall Plates for speaker wire connections

I have long speaker cable runs for the side and rear speakers (50-60ft.). The cables run through the attic and down the side walls of the room. To keep it looking "clean" I am thinking of installing wall plates that would connect to these cables(and then seperate speaker cables from the wall plates to the speakers).
Are there good quality wall plates available that will maintain the quality of the sound, or is this not a good idea at all.
Thanks for any other suggestions.