competition worthy???

Ok ill sell the l7s and how bout this setup two hdc318s in one ported box (volume?) with two dx 1000.1s. Good enough for some spl competition? should I get aluminum coils or copper coils?

 
Aluminum are great for SPL because they can take a lot of power at a shorter amount of time compared to copper, but will heat up quicker. If you will be more musical and not so much burping go copper.

 
Okay ill go with copper coils... Could I get in the 140's or 150's with these two 18's and if not please tell me what will get me in the 140's or 150's. And could I get away with putting both 18's in a 10 cu ft box tuned to 35 hz?

 
Depends on how you go about the build of your box. If you buy a prefab box you won't be seeing great numbers. You could easily be in the 140-150's with a high tune, around 20-25 sq in of port area per cu ft, and so on..

 
actually I just found the atomic apx 15. Anyone know how much they are? Would one suffice with the right box? and yes I will need some help designing the box....

maybe I could go with the extinction 15 which is better apx or extinction.... and which is better suited for what I want???? (daily driver and spl competiton???)

 
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