Originally Posted by XScarAudio
sounds to me like a wiring issue. I've run same size setups w/ 4 gauge and no dim. i think you might have your cap in line wrong. Also, i've found that distribution blocks make a huge difference. I use 4 fuse dist blocks for hot and cold side....ALWAYS match your wires, and keep as short as possible.
Cool. My distro block is not fused. It's just a 4g input and lets you split it into 4 8g outputs. I pretty much have the same as picture.