posted
Trying to get an Astro louder. Looking for max SPL, nothing else matters. Will be using 2 BTL 15s. Everything has to be in the very back behind the second row of seats and under 25" tall.
Original box he has was 10 cubes, tiny slot port all the wal across the bottom. Port was really long, and he said it was tuned to like 27-29hz. Subs facing up, port back. That box did a high 147 @ 53hz.
I did a new box for him, 8 cubes @ 39hz with 102in^ of port. Subs up, port firing back on the drivers side. This whole box was 1.5" thick. This box only did a high 146 @ 53hz.
From what Ive seen the BTLs always liked smaller boxes, so I shrunk it down to 4 cubes a sub (still big for a 15) and raised the tuning over 10hz higher and gave a whole lot more port, but still lost a whole DB...
The dimensions that we have are 49" wide, 22" tall, and around 40" deep. Anyone have any suggestions? Keep in mind the subs arent seeing **** for power... He said Carlos Rodriguez clamped the SS XXX6500 and he was only seeing 760rms out of it. So Im pretty stumped here. Any suggestions?
Posts: 296 | From: Tampa, Florida | Registered: Jul 2006
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posted
my friend Ben Delgrosso http://www.termpro.com/asp/competitorstats.asp?Competitor_ID=14027&Season=2009&Method=1 used that same vehicle and took 8th at worlds and he was tunned to 58/60 and his box was right behind the driver seats, his box was 8 cubes 2 15's but his port was way bigger then 100sqin more like 300/400 he ended up building seperate chambers
Posts: 133 | From: Canada | Registered: Jun 2002
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