TX NR 515 - Check SP Connection

I have had my brand new TX NR 515 for a week. I have it connected to a Martin Logan MLT-2 5.1 CH setup. The speakers have the following specs.

• 130 - 20,000 Hz ±2db, 2300 Hz Crossover Freq Center Speaker
• 8 Ohms
• 120 watts RMS (360 watts peak) Subwoofer

My issue is, if I am watching a movie and turn it above level 37, the receiver turns off and gives me the error Check SP connection when I turn it back on. It works fine for a while until it turns off again. However, this is not an issue if I turn it down. To me the speakers should be able handle this increase in volume, but for some reason the receiver is giving me an issue. I have checked all of my connections and the only thing I am worried about is the sub woofer which is connected by a simple RCA cable. The inputs work fine for regular TV as well as any PS3 games provided I do not turn it too loud. Any help would be greatly appreciated as I am an audio newbie.

I also have zone 2 connected to 2 Dual 3 way indoor/outdoor speakers which have a maximum output of 50 watts. But I have not yet used zone 2 because I am not sure what outputs are supported.

Any one have any thoughts?

In regards to your issue- it would possibly be more effective to contact our Product Support Dept for further assistance with this specific issue via our phone number and hours of operation below. We would like to speak with you and work to troubleshoot and resolve your issue, with you having access to your unit, as prompt as possible. Product Support is here from 9am to 8pm Mon. to Fri. and 10am to 4pm Sat. and Sun. eastern std. time. You can reach Product Support at 800-229-1687.

Thanks,

Forum Modarator