I have yamaha 5.1 stereo amp and outdoor speakers and a six speaker volume control to adjust differnet speakers in the garden but I hook them up they keep shutting down the amp. I know if you do not get the wiring just right it can cause a short. I have done every thing I kow to ensure this doesn't happe but it keeps shutting down the amp. all the speakers are at 8oms. When I use a cheap off the shelf home theater system it works fine and I do not blow the amp. Any sugesstions?