billy101 Posted December 2, 2011 Report Share Posted December 2, 2011 Hi all, I've built multiple ported boxes and have had good results with them. I've read up about 4th orders and about how they're more efficient and they have a wider bandwith and can play pretty low. I love lows My equipment is as follows 2 RE Audio SRX12D2's wired together into a 2 ohm load on an Infinity Kappa One with gains set using DMM to output between 750 and 800 watts RMS. The subs are fully broken in (over 6 mos of playing) and being rated 300RMS they handle the extra 75ish watts each rather well. I already asked my dad if he would help me build a new box around the time after Christmas when I'll have Christmas money to buy supplies. We have a brand new table saw and a router so I should be set to build it. I just need some designs. Please let me know if you need any more information. Thank you in advance! First System 2002 Impala LS 3.8L V6, 128,365k miles. Alternator: DC Power 190Amp H/O Alternator Headunit: Kenwood KDC-BT945U. Speakers: MBQuart 6.5" Comps, 6x9 3-way. Amplifer: Eclipse 3322 on front 6.5 components, and a Infinity Kappa One @ 2ohm- 800w Subwoofers: 2 REAudio SRX12D2 wired to 2 ohm. Box: 3.1cuft box tuned to 33hz. sealed off to cabin Big 3- done with all Knukonceptz KCA 0 gauge. Don't drop below 14.1v at full tilt. Link to comment Share on other sites More sharing options...
got160s? Posted December 2, 2011 Report Share Posted December 2, 2011 What are you looking for in the build? (demos, daily, comps, spl?) You need to include more info on your vehicle, how much space you have including your max dimensions. If you plan on upgrading any of your equipment would be nice to know as well. Also Idk if you know this or not but 4ths usually have a higher reactive load then most ported boxes. So expect to see a loss in wattage. Vehicle: 1999 Chevy Suburban AKA The Bammin' Beast Battery: 25 XS Power XP1000's Sub Amp: 3 DC 9k's Sub Stage: 18 DC Lvl 4 M2 12's in a Nasty 4th Order http://youtube.com/user/got160s Subscribe now! Prizes will be given away for every 1000 subscribers! Link to comment Share on other sites More sharing options...
donellk Posted December 2, 2011 Report Share Posted December 2, 2011 can find a lot of info to get u started here http://www.stevemeadedesigns.com/board/topic/126478-basics-of-a-4th-order-bandpass-enclosure/ Team Xtreme Amperage Xtreme Audio Innovations XtremeAudioInnovations.com Facebook.com/xtremeaudio321 basics of a 4th order ~ 1993 Toyota Pickup~ 4 linked c notched bagged Fiberglass door panels (5 speakers per door) Link to comment Share on other sites More sharing options...
billy101 Posted December 2, 2011 Author Report Share Posted December 2, 2011 What are you looking for in the build? (demos, daily, comps, spl?) You need to include more info on your vehicle, how much space you have including your max dimensions. If you plan on upgrading any of your equipment would be nice to know as well. Also Idk if you know this or not but 4ths usually have a higher reactive load then most ported boxes. So expect to see a loss in wattage. Definitely daily. I slam on my stuff everyday. It's a 2002 Impala LS. I have a 3.1cuft box in there now and could easily fit another 3 cube box in there. No plans to upgrade in the near future (broke as a joke and my equipment satisfies me). A loss in wattage won't be a big deal they're already being slightly overpowered. I can get trunk dimensions if need be. First System 2002 Impala LS 3.8L V6, 128,365k miles. Alternator: DC Power 190Amp H/O Alternator Headunit: Kenwood KDC-BT945U. Speakers: MBQuart 6.5" Comps, 6x9 3-way. Amplifer: Eclipse 3322 on front 6.5 components, and a Infinity Kappa One @ 2ohm- 800w Subwoofers: 2 REAudio SRX12D2 wired to 2 ohm. Box: 3.1cuft box tuned to 33hz. sealed off to cabin Big 3- done with all Knukonceptz KCA 0 gauge. Don't drop below 14.1v at full tilt. Link to comment Share on other sites More sharing options...
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