I have wired up the front three speakers with the CAT 5 cabling that I have seen on here. Two pieces of CAT 5 cable were braided and setup as advised. Turned the YAMAHA 795a upto a quarter of the way on the volume dial and it wasnt very loud at all. When I turned it up any further the amp kept turning itself off. Will it be the cable. The amp not powerful enough which I cant believe - I have been driving 4 Tannoy M3's and a Tannoy MC for 4 years and a quarter on the dial was very loud. Any help would be grateful.