Stee-Z Posted May 31, 2012 Report Share Posted May 31, 2012 I recently have gotten good news today which i never thought would happen. My dad said i can have the escalade since my mom is getting a new car. And you all don't have to be too jealous.. its a 99 with 160k on it. nothing to special. but down to the shit! I'm planning on 4 15" DC XL's with a DC 7.5k on a 4th order. I have the ~MAX~ measurements which are 43 deep 36 tall and 48 wide. here's the problem. i have no idea how to tune or design a 4th order really. Where should i start on this..... Quote (4)DD 9918's (2)DC 10k 8 6.5" focals 2 DD SS4 mid amps Audison Bit One processor Jl-cl-rlc line driver iPad in dash Dual Irragi 320a alts 8 batcaps 4000's Second Skin sound deadened Link to comment Share on other sites More sharing options...
EdgarG0721 Posted May 31, 2012 Report Share Posted May 31, 2012 I'm acutaly in the process of starting my first wall alot of work mine is in a car so ur cuts will probaly be easier. I would start my stripping all ur interioir and look to see where u gonna mount the box to ur car and build up from there good luck. Quote Link to comment Share on other sites More sharing options...
Zapanater Posted May 31, 2012 Report Share Posted May 31, 2012 http://www.ajdesigner.com/speaker/index.php This might help? I haven't done one myself, but I've planned them out for my truck. Good luck! Quote 2015 Subaru Outback. That is all, I refuse to touch it. Link to comment Share on other sites More sharing options...
Stee-Z Posted May 31, 2012 Author Report Share Posted May 31, 2012 haha thanks! that is what i will have to start doing. who designd your box for you? I need a design still because i have no idea how to figure out the tuning for a 4th order Quote (4)DD 9918's (2)DC 10k 8 6.5" focals 2 DD SS4 mid amps Audison Bit One processor Jl-cl-rlc line driver iPad in dash Dual Irragi 320a alts 8 batcaps 4000's Second Skin sound deadened Link to comment Share on other sites More sharing options...
727Designs Posted May 31, 2012 Report Share Posted May 31, 2012 How to start building? At the floor. How to start on a 4th order? Research. Quote -Zach-2010 Toyota TundraFull Hybrid Audio SQ 7" BDS on 37's 2000 Ford Expedition 160+ dB Green Turd -SOLD- Link to comment Share on other sites More sharing options...
Hotdog Posted May 31, 2012 Report Share Posted May 31, 2012 1: Get a Dayton Audio Dats from parts express to help with determining the resonant frequencies ----> http://www.parts-exp...tnumber=390-806 2: Depending on power you are using (more power less ratio) (less power more ratio) but typically a good ratio is either 2:1 or 3:1. 3: Build your shell for the 4th order enclosure and also the sealed portion of the enclosure then mount and wire your subs up. 4: Take your Dayton Audio Dats and run a resonance sweep on the sealed enclosure. What ever your Peak is, is where you want to tune your loading wall. 5: 4th orders are typically tuned higher because port velocity is responsible for your lower end 6: Port area is 2:1 or half your cone area 7: Try to keep subs on the same plane. if that is not possible then dont have parallel planes, a V formation is ok. 8: you can add poly Fill to the sealed enclosure to make a smaller sealed chamber this will also help keep your ported chamber smaller, if size of total enclosure is a issue. If anyone else with a little more knowledge cares to elaborate anymore on this or correct anything feel free Quote (NEW) 2004 F-150 Build Log -->http://www.stevemeadedesigns.com/board/topic/192208-hotdogs-f-150-build-log/ 2003 Mercury Mountaineer Build Log --> http://www.stevemeadedesigns.com/board/topic/114380-hotdogs-2003-mountaineer-build-log-20-removed/page__gopid__1602379#entry1602379 2008 Equinox Build Log --> http://www.stevemead...g/#entry1475764 Link to comment Share on other sites More sharing options...
Stee-Z Posted May 31, 2012 Author Report Share Posted May 31, 2012 ha well i know "where" to start building haha. more like where to get 4th order box design from ha Quote (4)DD 9918's (2)DC 10k 8 6.5" focals 2 DD SS4 mid amps Audison Bit One processor Jl-cl-rlc line driver iPad in dash Dual Irragi 320a alts 8 batcaps 4000's Second Skin sound deadened Link to comment Share on other sites More sharing options...
Hotdog Posted May 31, 2012 Report Share Posted May 31, 2012 ha well i know "where" to start building haha. more like where to get 4th order box design from ha You design one.. I have been playing with a few idea on my vehicle. here is one of them, keep in mind I can not finish the box at this point since I have to build this into the vehicle then find my resonance of the sealed chambers. Then I can build the loading wall and port tuning will be where my resonant peak was. Quote (NEW) 2004 F-150 Build Log -->http://www.stevemeadedesigns.com/board/topic/192208-hotdogs-f-150-build-log/ 2003 Mercury Mountaineer Build Log --> http://www.stevemeadedesigns.com/board/topic/114380-hotdogs-2003-mountaineer-build-log-20-removed/page__gopid__1602379#entry1602379 2008 Equinox Build Log --> http://www.stevemead...g/#entry1475764 Link to comment Share on other sites More sharing options...
Stee-Z Posted May 31, 2012 Author Report Share Posted May 31, 2012 1: Get a Dayton Audio Dats from parts express to help with determining the resonant frequencies ----> http://www.parts-exp...tnumber=390-806 2: Depending on power you are using (more power less ratio) (less power more ratio) but typically a good ratio is either 2:1 or 3:1. 3: Build your shell for the 4th order enclosure and also the sealed portion of the enclosure then mount and wire your subs up. 4: Take your Dayton Audio Dats and run a resonance sweep on the sealed enclosure. What ever your Peak is, is where you want to tune your loading wall. 5: 4th orders are typically tuned higher because port velocity is responsible for your lower end 6: Port area is 2:1 or half your cone area 7: Try to keep subs on the same plane. if that is not possible then dont have parallel planes, a V formation is ok. 8: you can add poly Fill to the sealed enclosure to make a smaller sealed chamber this will also help keep your ported chamber smaller, if size of total enclosure is a issue. If anyone else with a little more knowledge cares to elaborate anymore on this or correct anything feel free thanks! thats the kind of information im hoping for thanks! helped quit a bit Quote (4)DD 9918's (2)DC 10k 8 6.5" focals 2 DD SS4 mid amps Audison Bit One processor Jl-cl-rlc line driver iPad in dash Dual Irragi 320a alts 8 batcaps 4000's Second Skin sound deadened Link to comment Share on other sites More sharing options...
Hotdog Posted May 31, 2012 Report Share Posted May 31, 2012 I would like to clarify that the bigger the ratio the more output you will get but with a narrower frequency range Quote (NEW) 2004 F-150 Build Log -->http://www.stevemeadedesigns.com/board/topic/192208-hotdogs-f-150-build-log/ 2003 Mercury Mountaineer Build Log --> http://www.stevemeadedesigns.com/board/topic/114380-hotdogs-2003-mountaineer-build-log-20-removed/page__gopid__1602379#entry1602379 2008 Equinox Build Log --> http://www.stevemead...g/#entry1475764 Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.