Attention all box builders and designers......
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Gold Member Username: JkidderWorlds gunna end, In 2012 Post Number: 3669 Registered: Nov-05 | i'm designing a 6th order bandpass and need help. if there is anyone who has experience with such enclosures please post here and we'll go from there. the cisco kid |
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Gold Member Username: JkidderWorlds gunna end, In 2012 Post Number: 3672 Registered: Nov-05 | pos forum |
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Silver Member Username: CozcePost Number: 151 Registered: Mar-08 | RoffleCopter. |
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Gold Member Username: JkidderWorlds gunna end, In 2012 Post Number: 3673 Registered: Nov-05 | that's something unrelated to 6th order bandpass. you should refrain from acting on impulse next time your temporal lobe decides "rofflecopter" is the right thing to say. in other words, next time you think about typing rofflecopter in a thread you have no point of view in, don't. and if you are a 6th order bandpass expert, which by your ecoustics posting background i highly doubt you are, please help. the cisco kid |
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Gold Member Username: Surferdude9371Im BTL Bumpin Post Number: 1078 Registered: Mar-07 | i cant remember who it was but didnt the guy with the geo tracker just build one of those? you should contact his guy |
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Diamond Member Username: BestmankindPost Number: 21842 Registered: Oct-05 | http://www.betteraudio.com/geolemon/isobp/isobp.htm |
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Diamond Member Username: BestmankindPost Number: 21843 Registered: Oct-05 | http://www.carstereo.com/help/Articles.cfm?id=32 |
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Silver Member Username: QslimmsSwanton, Oh Usa Post Number: 175 Registered: Mar-06 | i know i'm not a box builder but those are fascinating boxes |
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Diamond Member Username: BestmankindPost Number: 21845 Registered: Oct-05 | here's a thread with some people that has experience with those boxes. http://www.diyaudio.com/forums/showthread/t-23813.html |
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Gold Member Username: JkidderWorlds gunna end, In 2012 Post Number: 3674 Registered: Nov-05 | thanks, has anyone ever designed one though? the cisco kid |
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Gold Member Username: JkidderWorlds gunna end, In 2012 Post Number: 3676 Registered: Nov-05 | i have all the basics down but i have a few ideas that i'd like to bounce off someone with experience. sean, scott, phil, canaan, fisher... the cisco kid |
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Silver Member Username: Hittin1Lake Charles, La. United States Post Number: 806 Registered: May-07 | car or home audio? |
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Gold Member Username: JkidderWorlds gunna end, In 2012 Post Number: 3677 Registered: Nov-05 | this application would be car. i've been doing a lot of experimenting with home enclosures though too. the cisco kid |
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Gold Member Username: JakeyplaysbassSt. Louis, MO / ASU Post Number: 3196 Registered: Jul-05 | What kind of 6th order are you looking to do? Standard tuned bandpass? Dual reflex? 3 chamber? Isobaric? Im building a 4th order bandpass isobaric right now for a friend. Not quite the same as 6th order but i can help. |
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Gold Member Username: JakeyplaysbassSt. Louis, MO / ASU Post Number: 3197 Registered: Jul-05 | Heres an 8th order triple reflex i designed last week. Ive never seen/heard one for car audio but it would look sick if you did one wall with plexi. Note: I did it quick so dont hate..    |
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Silver Member Username: CozcePost Number: 154 Registered: Mar-08 | "that's something unrelated to 6th order bandpass. you should refrain from acting on impulse next time your temporal lobe decides "rofflecopter" is the right thing to say. in other words, next time you think about typing rofflecopter in a thread you have no point of view in, don't. and if you are a 6th order bandpass expert, which by your ecoustics posting background i highly doubt you are, please help. the cisco kid" Was simply replying to "pos forum". GOSH If I was a 6th order bandpass expert, I would have gladly helped. Sorry. |
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Gold Member Username: JkidderWorlds gunna end, In 2012 Post Number: 3679 Registered: Nov-05 | dual reflex, i'm thinking about rear loaded horn and external aero ports. i'll draw something in paint in a few. the cisco kid |
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Gold Member Username: JkidderWorlds gunna end, In 2012 Post Number: 3680 Registered: Nov-05 |  the cisco kid |
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Gold Member Username: JakeyplaysbassSt. Louis, MO / ASU Post Number: 3200 Registered: Jul-05 | Yeah i cant help you there. |
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Gold Member Username: InsearchofbassPost Number: 9980 Registered: Jun-04 | Just so you know cisco I dont have any experience with bandpass boxes and had planned to build one but I like flexibility to modify and a bandpass doesnt offer it so Ive resisted building one. I still would like to build one but for now its a no go. I have used and heard a few bandpass boxes and will say if I build one it wont be with a plexi window because its expensive if you buy what you should to keep it from flexing. I would use all mdf. |
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Gold Member Username: JkidderWorlds gunna end, In 2012 Post Number: 3682 Registered: Nov-05 | yeah i'm not into plexi anyway. this would be straight spl. i would have a totally different box for daily use. horn-pass tuned to 45 and the external aero's tuned to 50 should give a nice peak right in the middle. resonant frequency of my sho is 46 so it's a good starting point even if it doesn't work out. the cisco kid |
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Gold Member Username: JkidderWorlds gunna end, In 2012 Post Number: 3683 Registered: Nov-05 | sean, you burp 45 hz in your taurus correct? the cisco kid |
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Gold Member Username: InsearchofbassPost Number: 9982 Registered: Jun-04 | With my image dynamics idq 12 in a sealed box 1.15 before the sub I hit loudest at 41 to 43 hz 44 hz was close I think but not as loud. The box was firing up at the back of the trunk. I put my resonant engineering entry level re 12 in the same box and had the same results. I never tried firing forward so I dont know the results there but I did try firing back and it was 2 db less loud at those frequencies. Keep in mind these subs have a low fs of 20 hz and im thinking that would change with a higher fs sub and the box size if it was ported since they are larger could change things too. |
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Gold Member Username: InsearchofbassPost Number: 9983 Registered: Jun-04 | I think I did get 44 hz to match spl wise once but it wasnt in an ideal position to place a larger enclosure. also the meter I used wasnt 100% accurate but I knew the correction amounts in general and they seemed close to the ear as well. |
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Gold Member Username: JkidderWorlds gunna end, In 2012 Post Number: 3684 Registered: Nov-05 | did you ever take the backseat out? in mine, it is two seperate pieces. seat bottom and then the back cushion. if you take off the back cushion there is a space into the trunk about 34 wide with a 4 inch metal bar directly down the middle. my option was to cut through the metal or to build around it. if you look at my design, the aero port(s) would be firing into the cabin through the passenger side and the horn would fire into the drivers side. my only problem, since this will be an spl box only, would be sealing off the trunk temporarily. i have no idea how i should do that. the cisco kid |
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Gold Member Username: InsearchofbassPost Number: 9987 Registered: Jun-04 | I never took the back seat out but with the amount of air being trapped in my trunk it would have to be louder. I just dont like the thought of my car with no back seat plus its more of a challenge to make it loud with it in. |
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Gold Member Username: JkidderWorlds gunna end, In 2012 Post Number: 3685 Registered: Nov-05 | very true. i'll have my backseat in 97% of the time. only during testing and actual competition will it be out. my car had a factory jbl 8 inch woofer bolted to the rear deck in the trunk. does yours have this? the cisco kid |
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Gold Member Username: InsearchofbassPost Number: 9988 Registered: Jun-04 | No just the 6.5's in the back deck and the fronts in the door are probably 5.25's. |
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Gold Member Username: InsearchofbassPost Number: 9989 Registered: Jun-04 | By the way I just bought a 12 juggernaut for spl. |
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Gold Member Username: JkidderWorlds gunna end, In 2012 Post Number: 3688 Registered: Nov-05 | niceee. what amp and what class? the cisco kid |
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Gold Member Username: InsearchofbassPost Number: 9992 Registered: Jun-04 | Well I was thinking of picking up an orion 2500d and I have a choice of dual 1.4 coils or dual 2. Its getting a fresh recone since my brother put 6000 watts rms to it but he got 15 burps total out of it before it broke I think. |
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Gold Member Username: JkidderWorlds gunna end, In 2012 Post Number: 3689 Registered: Nov-05 | whoa. you guys must have a good relationship haha dual 1.4  the cisco kid |
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Gold Member Username: InsearchofbassPost Number: 9993 Registered: Jun-04 | haha Why because he's getting a recone? |
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Gold Member Username: JkidderWorlds gunna end, In 2012 Post Number: 3691 Registered: Nov-05 | bump bump the cisco kid |
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Silver Member Username: DuckaShelby Township, MI United States Post Number: 345 Registered: Jan-08 | uhh Cam built a bandpass (i dont think it was a 6th order), but I think he got the design from pete kulicki(spelling?)also i could be way off with the name but it looked like a solid well thought out design. Maybe hit Cam with a pm since I havnt seen him on here in a while. |
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Gold Member Username: Surferdude9371Im BTL Bumpin Post Number: 1081 Registered: Mar-07 | cam thats who i was thinkin of |
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Gold Member Username: JkidderWorlds gunna end, In 2012 Post Number: 3692 Registered: Nov-05 | well if he had to pay for a design i don't think he would be able to help... the cisco kid |
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Silver Member Username: DuckaShelby Township, MI United States Post Number: 346 Registered: Jan-08 | his designer would |
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Gold Member Username: JkidderWorlds gunna end, In 2012 Post Number: 3693 Registered: Nov-05 | yeah and i can just call pete at team toxic bass and ask his advice...  the cisco kid |
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Gold Member Username: FrkkevinTeam DLSSuperNatural... Post Number: 5324 Registered: Nov-05 | you mentioned sealing off the box... line the trunk with plastic and painters tape and use great stuff spray foam.. you can cut it all out when your done your burping outlaw or legal? if outlaw burp with the trunk open, your going to get some better numbers since your still going to get rearwave cancelation |
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Gold Member Username: JkidderWorlds gunna end, In 2012 Post Number: 3696 Registered: Nov-05 | well the problem is sealing it off temporarily, as this will be a burp box only. are you suggesting i cut out the foam after each use? the cisco kid |
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