Hey fellas, I have a 1992 bmw coupe that I'm doing a custom install in. If any of you have experience with installing in BMWs, you probably know that the trunks are a bit of a bass-kill. My original idea was to take the 12" IDMax that I currently have in a sealed box, add another, and install them IB-style in the rear deck. This would get me some sound into the cabin, but from what I understand IB installs usually end in a decrease in output. That was the reasoning behind the second IDMax, but I really would rather have to power only one. In my attempt to think outside of the box, I came up with an idea that I hope would help me solve this bass-muffling trunk problem. Is it acoustically sound to build a box that has the woofer firing through a hole in the rear deck, but the port facing the back of the trunk? Also, the rear speakers will be removed from the corners of the back deck to give a path for the pressure from the port to enter the cabin. It's a bit hard to visualize, but it would basically be like installing the woofer IB-style in the center of the rear deck, then building a rear-firing ported box around it. I have a feeling that this type of box would result in an odd frequency response since the port and the woofer itself have such different paths into the cabin, but I really don't know.
Sorry if this is long-winded and confusing, but my question really boils down to this: Since the paths into the cabin of the port and of the woofer itself are so different, am I essentially defeating the basic design of a ported enclosure?
Thanks
