I'm running two XS-650 on a clarion xr2410 (bridged 100W RMSx2). Right now I'm running a HPF with X-over at about 100 hz on the amp and gains only set about 25%. When I turn the head unit to about 60% power the speakers will turn off but the amp's power protect light stays blue when louder/bassy parts of the song come on. When I run a test tone (1 kHz sine wave) the power protect red light will come on if I turn gains past 25% typically, though they don't shut off. I turned head unit bass down but that didn't help. All speaker connections are good (measuring 3.9 ohm) across wires by the amp. I'm sort of lost now--any advice?