P4killer_ Posted August 10, 2012 Report Share Posted August 10, 2012 Ok first off. Using the current equipment in my sig, I did a 146.3 at Slamology with the the trunk not sealed off. I wanted to try sealing to see what happens.. I have done trunk seal mockups before and always lost a significant amount my conclusions from that being that unless the trunk is reeeally sealed off, you will lose SPL. I never did the rear deck in these tests. So I set out to reaaally seal off the trunk w/o expanding foam however because its so messy. So I took out the entire rear seating out. Rear deck got a layer of painters plastic sheet taped down tight and fitted sealed up all edges corners etc then a layer of cardboard taped down fitted etc etc The stock dampening went back on top of all of that, it basically covers the entire deck.. The rear shelf went over all that Taped up any holes underneath as well. I made a bracket out of 2x4s to go around the trunk opening secured seal and taped it in Slide the box into the now square opening Results at this stage: 142.7 I used air conditioning foam around the top of the box from the back even though its very tight already Added foam paneling around the sides to complete the seal all the way around Results at this stage: 143.2 [+0.5db] Ill add pictures later, however my smartphone broke otherwise id have lots of pictures, so i only took a few from my old slider phone. For all of those people who swear by sealing the trunk WHAT AM I DOING WRONG? Is it perfect? No, but its pretty dang good imo. I spent idk 10 hours easily if not more on this project. And losing 3+ db is a craaazy loss. Opinions thoughts ideas appreciated, P4Killer_ Quote Setup: 2010 Hyundai Elantra Factory Unit via 4 chan NVX LOC Excessive Amperage "H/O" Alt Xs D3400/ Xs XP3000 Big 3. 2 Runs of +, 2 Runs of - DD M3b and 2 12" AQ HDC4s Link to comment Share on other sites More sharing options...
ALPINE408 Posted August 10, 2012 Report Share Posted August 10, 2012 I have allways gained sealing the trunk off not sure what your doing wrong pics would help Quote Have you ever had your woofers blown? Link to comment Share on other sites More sharing options...
tacomaguy1 Posted August 10, 2012 Report Share Posted August 10, 2012 pics Quote Team Flex Issues Link to comment Share on other sites More sharing options...
P4killer_ Posted August 10, 2012 Author Report Share Posted August 10, 2012 (edited) Pictures later, my old phone is being stupid and I have work FML Edited August 10, 2012 by P4killer_ Quote Setup: 2010 Hyundai Elantra Factory Unit via 4 chan NVX LOC Excessive Amperage "H/O" Alt Xs D3400/ Xs XP3000 Big 3. 2 Runs of +, 2 Runs of - DD M3b and 2 12" AQ HDC4s Link to comment Share on other sites More sharing options...
n8ball2013 Posted August 10, 2012 Report Share Posted August 10, 2012 Box position Quote THERE IS NO BUILD LOG! 1998 Chevy Silverado ext cab Alpine CDA-9887 4 Team Fi 15s 2 Ampere Audio TFE 8.0 2 Ampere Audio 150.4 3 Digital Designs CS6.5 component sets Dual Mechman 370XP Elite alternators inbound! 8 XS Power d3400 6 XS power d680 Second Skin Stinger Tsunami Wiring Sky High A Real Voltmeter not a piece of shit stinger. Link to comment Share on other sites More sharing options...
IndianaBassHead Posted August 10, 2012 Report Share Posted August 10, 2012 Tuned in. I am about to do a trunk build and have debated facing the box against the hatch or sealing and facing forward. Quote Audio Build Ride: 2002 Chevy Blazer 4 door Head Unit: Pioneer deh-80prs Subs: 4 DC Level 3 15's in a 4th order wall designed by Trent Choate and Jeff Smith Subs Amp: AQ 3500.1 at wired at .5 (soon to be 2) Mids/Highs Amp: Skar 85.4 Mids/Highs: Skar components Electrical: Mechman 270 amp alt, 2 runs of Knu 0 gauge, XS Power d3400, 2 Deka Group 9a31 Build log : http://www.stevemeadedesigns.com/board/topic/167658-indianabasshead-blazer-dc-audio-4th-order-wall-build/ Perfomance Build 2003 Nissan 350z Greddy Twin Turbo, 3" Test pipes with Borla high-flow cats, Crawford Performance Plenum, Greddy E-manage Ultimate ECU Exedy Racing Clutch, Built Motor by Racing Innovations Greddy Over-fender aero kit (1 of 20 ever made), 19" Racing Hart r5 pro wheels 466rwhp Bike 2008 Midnight Blue Kawasaki ZX-14 Stretched 8" and lowered, Brocks Sidewinder exhaust, Power Commander 5 Link to comment Share on other sites More sharing options...
sprkn_ranger Posted August 11, 2012 Report Share Posted August 11, 2012 Does it sound louder to the ear? Quote Check out my build log! 4 Havocs in a blowthrough http://www.stevemeadedesigns.com/board/topic/187506-sprkn-rangers-blowthrough-build/ Link to comment Share on other sites More sharing options...
kr15 Posted August 11, 2012 Report Share Posted August 11, 2012 What org do you meter for and where do you peak. Sealing off firing foward TENDS to favor sealed up metering at a higher peak frequency. If you peak really low, or meter opened up, this doesnt surprise me at all Quote Team Flex Issues Low tuning > God 2011 CALI AS1 STATE CHAMP Link to comment Share on other sites More sharing options...
fox_racin4 Posted August 11, 2012 Report Share Posted August 11, 2012 Use deadner over rear deck holes, Put box where you want it, secure it down and then use gorilla tape to seal it off ( like 4 layers snd pit cardboard inbetween layers.. Thats how i got my 150.1 from a trunk Quote 1998 gmc extd cab 12 crossfire C710s 4 SAZ-4500s 3 Singer 400A altsbuncha mids/highs Team Asshole Link to comment Share on other sites More sharing options...
P4killer_ Posted August 11, 2012 Author Report Share Posted August 11, 2012 (edited) \ Rear Deck as described above Around the trunk opening to slide the box into I Taped it alot more also Foam panels and strips all the way around.. almost perfect. I though I had a picture of the box orientation ill add that in a min.. Edited August 11, 2012 by P4killer_ Quote Setup: 2010 Hyundai Elantra Factory Unit via 4 chan NVX LOC Excessive Amperage "H/O" Alt Xs D3400/ Xs XP3000 Big 3. 2 Runs of +, 2 Runs of - DD M3b and 2 12" AQ HDC4s Link to comment Share on other sites More sharing options...
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