deisgned my first bandpass 3:1 2 18's blazer. opinions? - Car Audio Classifieds!
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Old 10-24-2012, 09:34 AM
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Default deisgned my first bandpass 3:1 2 18's blazer. opinions?

Well with all the talk about bandpasses i decided to give a shot designing one. Ive never built one or.designed one. I have built quite a few boxes though. I did come across one snag which ill bring up in a second. Rear chamber 6 cubes. 3 per sub. Front chamber is 18. Box dimensions are 38x31x44. Inside dimensions are 36.5x29.5x42.5 this will allow me to slide it in through the back then double/triple wall it after its inside. Port is 29.5x9 and 7" long which is 270 sq in at 44hz i believe? I know its a little on the low side but i mainly want it for lows.now my snag is that i cant fit the 18's side by side to do a flat wall for the rear chamber. And i heard of some claiming firing woofers towards each other causes cancellation.? But i dont want subs on one.side as port is in the middle of the.box so i was thinking one on each side inverted. I gave myself .4 for sub displacement and 1.4 for port. The box comes out to 26.4 then minus port and subs leaves me 24.6 im gonna try to avoid internal bracing and go with double wall and 2x4's. Any input on this box? criticism? Things i left out?
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Old 10-24-2012, 09:50 AM
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i would bug hackmunch with this for sure, or even add it to the already exsisiting 4th order thread. imo design dont really mean much without the proper subs, what you running
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Sometimes I just want to drive my shit into a shop and hand them a fistful of money and be like... "Here. Do this shit."
I have zero problems with people having a shop or other enthusiast do their build. But it's a little disrespectful they take credit for it and/or don't correct people when they assume the owner did the work. Happens all the time.
4 zv4 18:2 ct7k: c pillar wall(not sealed off)156.11:
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Old 10-24-2012, 09:51 AM
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also do a "v" so the subs arent right parallel to each other to avoid cancellation
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Sometimes I just want to drive my shit into a shop and hand them a fistful of money and be like... "Here. Do this shit."
I have zero problems with people having a shop or other enthusiast do their build. But it's a little disrespectful they take credit for it and/or don't correct people when they assume the owner did the work. Happens all the time.
4 zv4 18:2 ct7k: c pillar wall(not sealed off)156.11:
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Old 10-24-2012, 09:55 AM
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I was actually hoping he would chime in on it. Subs are up in the air. Im just throwing around ideas before i actually pull the trigger. Im lookin at everything from psi, sundown, aa mayhems etc...
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