First post on this forum, hi Guys! Really like all the content here and wish I would find it sooner. Looks like a pair of Ckrams is my next dream build. Big thanks for the design and detailed information! Frankly would prefer to build Scrams instead but the size and weight scares me (me and my spine, to be precise), don't think I can handle it. The biggest sub I built so far is vented B&C 18DS115-8 and so it's very interesting for me to see how a couple of NSW21 in Ckram cabs will sound. I will do some measurements after I'm done and will post here.