Andrew Y

Hi, Pendolinos arrived and are looking good. I'm new to sound. I haven't tried to run them yet, as it seems my transformer is producing too high a voltage. It is a Lenz TR100, which claims to output 15V, but I measured it with a multimeter to be 16.8V. I read that more than 15V 'may well blow the sound decoder'. Does anyone have it working with the same transformer? Do I need to buy a new transformer? If so, can anyone recommend one? Or have I misunderstood something? Thanks