Hi there, I have a problem and it's frustrating me very badly! I have a Pioneer VSX-515-K. I heard good things and read good things on reviews about this receiver and I ordered one roughly 2 months ago. I had two Technic 12" towers hooked up to it and it ran them flawlessly. I could crank them to the max and my amp never once had a problem. (The wattage says "150W Music" on the technic speakers)
I ordered some Cerwin-Vega CLSC-12's in and they showed up yesterday. (They are 300W peak and 8 ohms). I hooked them both up and now when I turn my receiver up to about -25db....bang, the amp shows overload and powers off. Also, the receiver turns back on no problem after this happends. The thing that really upsets me is that they aren't even close to distorting either and the fuses won't blow out on the speakers meaning they aren't clipping. I've got new 12 gauge speaker wire, checked for shorts, hooked each up individually, the ohms match up, checked the speakers with an ohm meter (they show 8 with is correct), i've put new fuses in the speakers and i've even done little things like changing the crossover. It's currently set at 80 and the bass is at 4/6. The only thing that actually works a little bit is turning the bass down to basically the lowest setting on the receiver. It allows me to turn the volume to about -20db instead of -25db.
I've tried everything I could think of! If you do the math my receiver is supposed to be powering the speakers 73%, which makes me unable to see why the receiver is overloading......I also tried hooking one speaker up to a buddies amp and cranked it with no problems and his is an old 100Watt X 5 Technic amp! I just can't figure it out and its making me sad lol.
ANY suggestions at all would be GREATLY appreciated.
Thanks!!!