Hello everyone! I recently purchased a PE250 to power my SVS. At the moment, I'm testing it and just have it lying in my stereo rack with the heatsink facing up and parallel to the shelf it's on. At loud volumes, it runs quite hot and has even shut off once. As of yet, I have not calibrated my sub, so it's possible I may be overdriving the amp. I know ideally the fins of the heatsink should be in a vertical position, but will that make that much of a difference? Also, I'm going to build an enclosure for it and was thinking of adding a fan. Should the fan be placed inside the enclosure or on the heatsink? And should the fan be blowing towards the amp or away from it? And one last question. Can I use a video cable as an interconnect for the amp? I have a short run and haven't been able to find a sub cable less than 12 feet. Thanks.