TRTC360 Posted July 19, 2013 Report Share Posted July 19, 2013 True but a bigger chamber will have unloading issues compared to a smaller one weather it be sealed/ported/4th/6th/8th/ABC/whatever.With 4 orders you have an advantage tho of being able to control the amount of cone movement with the size of the sealed section,In 4ths a bigger sealed will get lower, and big ratio is more efficient Big ratio has narrower bandwidth though, so it's a tricky compromise narrow bandwidth you say not sure what exactly makes this system tick but I believe it has something to do with 1/4 wave? something that I don't understand whatsoever, BUT I believe this is a 3:1 or 4:1 ratio 4th and it does 61-62's iirc. Just 4 15's, one of the most impressive setups i've seen. '93 Firebird Formula V8 H/U- Kenwood eXcelon KDC-X395 Mids/Highs Amp- Hifonics ZXI80.4 Wiring-KNU RCA's, Speaker Wire, And Two Runs Of Trystar 1/0 G34 Red Top and a 180amp Ford Alternator www.youtube.com/TRTC360 Link to comment Share on other sites More sharing options...
CleanSierra Posted July 19, 2013 Report Share Posted July 19, 2013 I think u should try a 4th order V shape subs in the far back , 3 cubes sealed per side and 10 ported, 200" of port ish I have 220" for 2 15s and wish I could get more... Im not the one you want to try to troll. Just a fyi for you. Link to comment Share on other sites More sharing options...
4Bent Posted July 20, 2013 Author Report Share Posted July 20, 2013 HxWxL 17.5x49x72 best i could remember without the actual paper we drew it up on BlowthroughSubs rebuild Amps 1-SAZ3500 1-T4004Coaxial 1Set Alpine Type-R Components 1 Set- kicker ks 5.21 Set- Kicker ks 6x8 Reciever Pioneer DEH-P7400HD2000 Ford F-150 EXT Cab Clarion EQ Link to comment Share on other sites More sharing options...
Hugh G. Rection Posted July 20, 2013 Report Share Posted July 20, 2013 am i missing something here you guys? im sure your probably missing a bunch of shit. just the first one that comes to mind is that you have to understand how to manipulate the enclosure to get the needed amount of back pressure on the subs to help them under control at your power level, but not kill the efficiency or the cooling. second is that you have to understand how the actual physical depth of the enclosure affects the wavelength of the enclosure and therefore its tuning. you have to also understand the wavelength between the enclosure and the front of the vehicle, and how that affects the cabin resonance and the relation of that to the enclosure tuning. there is a lot more shit that we could talk about as well, but by looking at what program you design with, there is no sense in wasting my time getting in to it. Owner of BigAss Ports Link to comment Share on other sites More sharing options...
CortezDTV Posted July 20, 2013 Report Share Posted July 20, 2013 Please stop with the 6th orders! 4th order all day, no ofence but you don't have the knowledge or skill to build a proper 6th orders, without proper plotting you are just guessing and it's all trial and error, so you would need to be able to shrink and change port easily if you go that route, which can not be done that easily in a box like yours I really recommend a 4th order, But either way the hole in the back of your cab is not big enough, you need like everyone said 200" of port or more, up to 400" ish for big enclosures SCSB Santa Cruz Speaker Box Build logs: Daily Driver Lemon Marquis 2 american bass 750.1s 350.4 on 14 focal 6.5s sq 945 on 4 hertz tweeters Mystery subs http://www.stevemead...__fromsearch__1 The Mustang 'dubbed' Shirley the project from bullet holes to badass http://www.stevemead...cond-skin-time/ Link to comment Share on other sites More sharing options...
4Bent Posted July 20, 2013 Author Report Share Posted July 20, 2013 Please stop with the 6th orders! 4th order all day, no ofence but you don't have the knowledge or skill to build a proper 6th orders, without proper plotting you are just guessing and it's all trial and error, so you would need to be able to shrink and change port easily if you go that route, which can not be done that easily in a box like yours I really recommend a 4th order, But either way the hole in the back of your cab is not big enough, you need like everyone said 200" of port or more, up to 400" ish for big enclosures im trying to get some help here.. from tuning the box low in the rear do you think i can extend them to tune higher i will get better results? before i move onto building a new enclosure.. i will take in consideration your idea for a 4th. if you can help me out with it ide really appreciate it BlowthroughSubs rebuild Amps 1-SAZ3500 1-T4004Coaxial 1Set Alpine Type-R Components 1 Set- kicker ks 5.21 Set- Kicker ks 6x8 Reciever Pioneer DEH-P7400HD2000 Ford F-150 EXT Cab Clarion EQ Link to comment Share on other sites More sharing options...
CortezDTV Posted July 20, 2013 Report Share Posted July 20, 2013 Either way you would need way more port area 200square inches or more (4th or 6th order) Think 10x 20 Or 15x 20 for the Opening into the cabin, that will drastically help you also then make the ports in the back smaller, about half the width in the back before they come together, once they are one port they can be your original width All that if your really trying to keep a 6th order SCSB Santa Cruz Speaker Box Build logs: Daily Driver Lemon Marquis 2 american bass 750.1s 350.4 on 14 focal 6.5s sq 945 on 4 hertz tweeters Mystery subs http://www.stevemead...__fromsearch__1 The Mustang 'dubbed' Shirley the project from bullet holes to badass http://www.stevemead...cond-skin-time/ Link to comment Share on other sites More sharing options...
CortezDTV Posted July 20, 2013 Report Share Posted July 20, 2013 Really really quick sketch not to scale the two sealed outside chambers would be 3-4 cubic feet each, the middle section would be 7 to 12 cubic feet ported Tune to 46 if u want the lows SCSB Santa Cruz Speaker Box Build logs: Daily Driver Lemon Marquis 2 american bass 750.1s 350.4 on 14 focal 6.5s sq 945 on 4 hertz tweeters Mystery subs http://www.stevemead...__fromsearch__1 The Mustang 'dubbed' Shirley the project from bullet holes to badass http://www.stevemead...cond-skin-time/ Link to comment Share on other sites More sharing options...
4Bent Posted July 20, 2013 Author Report Share Posted July 20, 2013 ok makes sense . this is my old 6th order. tuned this one high but played loud and low. let me give it another shot and i'll get back to you cortez BlowthroughSubs rebuild Amps 1-SAZ3500 1-T4004Coaxial 1Set Alpine Type-R Components 1 Set- kicker ks 5.21 Set- Kicker ks 6x8 Reciever Pioneer DEH-P7400HD2000 Ford F-150 EXT Cab Clarion EQ Link to comment Share on other sites More sharing options...
CortezDTV Posted July 20, 2013 Report Share Posted July 20, 2013 See how ur port is small in the rear chamber^^^ And then massive front port, the rear chamber is tuned low with little port area per cube and the front chamber is typically bigger with a very high tuning and a massive port area I would still do a 4th order I have seen the best results from 4ths from my paroozing, There are a few like the audio innovations truck that are super loud with a 6th order but their builds and I can't stress enough how much they really know what yet are doing SCSB Santa Cruz Speaker Box Build logs: Daily Driver Lemon Marquis 2 american bass 750.1s 350.4 on 14 focal 6.5s sq 945 on 4 hertz tweeters Mystery subs http://www.stevemead...__fromsearch__1 The Mustang 'dubbed' Shirley the project from bullet holes to badass http://www.stevemead...cond-skin-time/ Link to comment Share on other sites More sharing options...
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