pumpfinder Posted December 16, 2010 Report Share Posted December 16, 2010 Alright so I had planned to run 2 Fi SSD 12's in my 2006 Lancer Ralliart. And then I got the great idea to do a 18" Fi BL. When I started looking into it, people have been saying you shouldn't run a 18" in a trunk because of minimum air space. I couldn't really find a direct answer so I decided to make this topic. So what do you guys think? 1 18" BL or 2 12" SSD. Also, all i play is music. Mostly Tech N9ne and such. Below is my current build. Maybe it will help with your decisions. 2006 Mitsubishi Lancer Ralliart. Alpine CDA-117. Focal K2 Power 165KF components. Hifonics ZXi6410 4 Channel (680RMS x 4 - 85 watts/channel @ 4 ohms, 320w bridged @ 4 ohms). 2 Rockford Fosgate P2 Dual 4 12s (P2D412) running off bridged channels on Hifonics in custom 3.7ft^3 (after displacement) ported box. Rockford Fosgate 1000-1BD should be here December 22nd and will be running new subs. H100 Imprint kit being ordered soon. 1/0 Knu Konceptz KCA Power Wire being run back which is then distributed into 2 runs of 4 gauge Knu Konceptz Kolossus Fleks Kable to each amp. The box dimensions of my current are as follows (all outside dimensions): W = 20" D = 30" H = 14" Area = 3.7 ft^3 Port tuned to 34hz Subs up-firing and ports aimed at passenger side Same box will be used for Fi SSD's So far the dimensions for the 18" BL are as follows: W = 24.5" D = 36" H = 13.25" (will be double baffled and therefore 14") Area = 5.15 ft^3 after woofer displacement Port tuned to 31Hz Sub up-firing and ports will probably be pointing at back seat, so toward front. I understand that this is a small box for a 18" but on the Fi website recommendations start at 5 ft^3 and up so... Max height of my trunk is 18" Max depth is 33" Max width is 38" (this is between wheel wheels) I have nearly 50" when not counting wheel wells. So in conclusion, is the 18" rational or should I do the 2 12's as I had planned. Thanks for your time, Matt Quote 2006 Mitsubishi Lancer Ralliart Alpine CDA-117 2 12" Fi Audio SSD D1 Rockford Fosgate T1000-1BD (1340RMS @ 1 ohm) Vibe Audio LiteBox Stereo 4 Energy ENC650CV2 Component/Convertible Speakers Knu Koncept 0 Gauge Link to comment Share on other sites More sharing options...
Carroot1 Posted December 16, 2010 Report Share Posted December 16, 2010 well its not really a good idea to run subs facing up in a trunk. am i correct? i have 2 twelves subs back and port up sounds great Quote Link to comment Share on other sites More sharing options...
C-Fizzy Posted December 16, 2010 Report Share Posted December 16, 2010 5 cubes after displacement is perfect. Quote under construction I hate People with crappy primered cars rolling on hubcaps that are louder then me. u hate c-fizzy? Link to comment Share on other sites More sharing options...
iKidwell Posted December 16, 2010 Report Share Posted December 16, 2010 5 cubes after displacement is perfect. he's only runnin 1k rms, maybe 1.3k rms w/ the rf, the bl can take way more than that and would want a larger box unless he gave it like 1700+ i'd say. Quote c'mon now, if i was shooting an 8 year old, it wouldnt be MY 8 year old. i recently got a Pyle PL1590BL and i was building an enclosure for it tuned to 25 hz. i didn't have any tools to cut a circle so i hit it with a big hammer. 2003 Infiniti G35 Sport Sedan Build in Progress Link to comment Share on other sites More sharing options...
pumpfinder Posted December 16, 2010 Author Report Share Posted December 16, 2010 well its not really a good idea to run subs facing up in a trunk. am i correct? i have 2 twelves subs back and port up sounds great I understand it's not the best way to run for trunks but its the only way i can run something bigger then 12's and 12s are still a push. The trunk itself is a fair size for the size of the car but its the openings. They are so small. Quote 2006 Mitsubishi Lancer Ralliart Alpine CDA-117 2 12" Fi Audio SSD D1 Rockford Fosgate T1000-1BD (1340RMS @ 1 ohm) Vibe Audio LiteBox Stereo 4 Energy ENC650CV2 Component/Convertible Speakers Knu Koncept 0 Gauge Link to comment Share on other sites More sharing options...
Guest Posted December 16, 2010 Report Share Posted December 16, 2010 i sat in a trunk car that had an HDC318 with sub up port back on a 2200d, and i felt my ear drum physically moving lol. loudest system i've heard to date. Quote Link to comment Share on other sites More sharing options...
Carroot1 Posted December 16, 2010 Report Share Posted December 16, 2010 well its not really a good idea to run subs facing up in a trunk. am i correct? i have 2 twelves subs back and port up sounds great I understand it's not the best way to run for trunks but its the only way i can run something bigger then 12's and 12s are still a push. The trunk itself is a fair size for the size of the car but its the openings. They are so small. your lucky, your trunk is pretty wide no homo but my trunk is 30 between the wheel wells and its a squeeze for my twelves Quote Link to comment Share on other sites More sharing options...
StreetSlappah Posted December 16, 2010 Report Share Posted December 16, 2010 i sat in a trunk car that had an HDC318 with sub up port back on a 2200d, and i felt my ear drum physically moving lol. loudest system i've heard to date. Damn! If you know what you're doing I'd do the 18" just to be fifteenth plus you'll have a big ass sub in a trunk but if jot go with the 12s to save you from the headaches. Quote Refs-(b.f.) 99vic, WCA Rusty(x3) Nathan@XSPOWER, Ampjunkielikeme, Bread0710, AmiCreations (s.t.) REsLaPz, PandaGT(x2), Keiferacing, Juicemane (t.w.) Powski, Big gil[/center] Build Log http://www.stevemeadedesigns.com/board/topic/77726-sss-celica-dc-buildupdate-611-finished/ 2005 subi STi 380whp 355whp 17" gold bbs 5% tint all around w/sunglare strip JVC dvd double din Knuconceptz 4ga wiring XS Power! Big 3 8" SAv2 d2 1800 audiopipe Link to comment Share on other sites More sharing options...
pumpfinder Posted December 16, 2010 Author Report Share Posted December 16, 2010 well its not really a good idea to run subs facing up in a trunk. am i correct? i have 2 twelves subs back and port up sounds great I understand it's not the best way to run for trunks but its the only way i can run something bigger then 12's and 12s are still a push. The trunk itself is a fair size for the size of the car but its the openings. They are so small. your lucky, your trunk is pretty wide no homo but my trunk is 30 between the wheel wells and its a squeeze for my twelves Yea, its really the only reason why I can fit a decent sized box. If it wasn't for width I think I would be screwed. If you could fit the 18 would you? Quote 2006 Mitsubishi Lancer Ralliart Alpine CDA-117 2 12" Fi Audio SSD D1 Rockford Fosgate T1000-1BD (1340RMS @ 1 ohm) Vibe Audio LiteBox Stereo 4 Energy ENC650CV2 Component/Convertible Speakers Knu Koncept 0 Gauge Link to comment Share on other sites More sharing options...
Carroot1 Posted December 16, 2010 Report Share Posted December 16, 2010 well its not really a good idea to run subs facing up in a trunk. am i correct? i have 2 twelves subs back and port up sounds great I understand it's not the best way to run for trunks but its the only way i can run something bigger then 12's and 12s are still a push. The trunk itself is a fair size for the size of the car but its the openings. They are so small. your lucky, your trunk is pretty wide no homo but my trunk is 30 between the wheel wells and its a squeeze for my twelves Yea, its really the only reason why I can fit a decent sized box. If it wasn't for width I think I would be screwed. If you could fit the 18 would you? id probably jazz my pants if i could fit an 18 and i would definitely do it. If your facing up just make sure the sub has a few inches to "Breathe" i say go for it Quote Link to comment Share on other sites More sharing options...
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