HeavyOne Posted July 1, 2014 Report Share Posted July 1, 2014 Edit: changed some things based on new measurements and driver changes. Added below.. Link to comment Share on other sites More sharing options...
greezychef Posted July 2, 2014 Report Share Posted July 2, 2014 Bump, curious about this. Space behind a mega cab is re-dic! Link to comment Share on other sites More sharing options...
Joe X Posted July 2, 2014 Report Share Posted July 2, 2014 I would recommend something like this, about 7-8 cubes net, 110-120 or so square inches of port area depending on tuning and power: If you would like some calculations for the above let me know. Link to comment Share on other sites More sharing options...
HeavyOne Posted July 2, 2014 Author Report Share Posted July 2, 2014 Joe never ceases to amaze me.. Thank you and yes! Link to comment Share on other sites More sharing options...
HeavyOne Posted July 2, 2014 Author Report Share Posted July 2, 2014 Edit: I need to go back and re-measure some things today. Something doesn't look right with my enclosure max height value after checking out someone else's Mega cab build on another forum. May end up having to stick with the 2 12's after all, perhaps 3 at most.. Oh well. Link to comment Share on other sites More sharing options...
greezychef Posted July 2, 2014 Report Share Posted July 2, 2014 Keep us updated heavy. I'm toying with the idea of buying a mega cab myself Link to comment Share on other sites More sharing options...
HeavyOne Posted July 4, 2014 Author Report Share Posted July 4, 2014 I re-measured the height tonight. From floor to bottom window is right about 25". I can go 27", if needed.. Excuse my crappy drawing, but this would be the basic shape.. I don't have the sketchup skills, but have been trying to learn. http://i1272.photobucket.com/albums/y381/CaddyEXT/Mega%20cab/ver2_zpsd9f681e0.jpg Here is what I have to work with.. Height 1 (box face): 18" Height 2 (rear wall): 25" to 27" (27" would end up being a couple inches above the rear window line, but am ok with that) Depth 1 (top): 8" Depth 2 (bottom): 11" Width: 60" Strongly thinking about selling the two SA-12's and going with three DC XLM2 12's (D1.4's) as they like tight space (1.5 cuft each) and take a good amount of power. I'm looking at the 1.4 coils because on three subs I'd be right around 0.9333 ohm. Looking at running an NS-1 to them. First part I'm having issue with is the box volume. I've ran the numbers through a couple of different calculators and am getting different results. One site came out to around 5.5 cuft. RF's box wizard shows 6.7 cuft for the wedge 2 design?? Guess I'd be shooting for around 4.5 to 5 cuft after sub, port and bracing displacement? As far as sub positions and port alignments, could I run aeros up through the top on say the left side of the box if I position the three subs over on the right? I'm still trying to learn how many, size and lengths by experimenting with the different programs. I'm not opposed to slot porting if there's room for it.. Thanks again Link to comment Share on other sites More sharing options...
greezychef Posted July 4, 2014 Report Share Posted July 4, 2014 Strip it all out. Everything out from behind the back seat and the re-measure. Maybe gain a little more room. Never know. Link to comment Share on other sites More sharing options...
HeavyOne Posted July 4, 2014 Author Report Share Posted July 4, 2014 I did remove the back wall trim and floor storage compartment. I'll see what Joe or the other experts think. If I can make 4 xl 12's work I'll do it. Otherwise I'll stick with 3. Link to comment Share on other sites More sharing options...
greezychef Posted July 4, 2014 Report Share Posted July 4, 2014 I did remove the back wall trim and floor storage compartment. I'll see what Joe or the other experts think. If I can make 4 xl 12's work I'll do it. Otherwise I'll stick with 3. Yeah, I did go and look at one today. I could tell you probably had already done it. Can't wait to see how this turns out for you. 4 12's would be amazing! Link to comment Share on other sites More sharing options...
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