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  #1  
Old 11-23-2013, 09:47 PM
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Default need input on my first ever box build

Hello everyone. Im pretty new around here. So to put things in a nutshell im an amatuer audiophile ive been reading about everything for a while but have yet to actually attempt much seeing as a lack of budget. The time has come to start the great process of trial and error. So down to the details...

I have 2 ancient quantum audio gc15.2(if you can find the specs id love to see them) in a sealed probox Im using as test dummys. picked these up off a friend years ago. I want to try a ported enclosure on one of these to see if i like it. Problem is i have no place to begin. Realistically i dont expect these to perform like a dd or ia, ect. But i would like to get them low. I will be running a pioneer gm-8601 as the test dummy. Cea-800 watts. The speakers are designed for 1kw rms/2k burped (think its got a 2.5/3" coil). Since these are dvc 2ohm i was thinking run parellel (i think i murdered that word :s) on the coils for the 1ohm initial resistance. Was thinking of hooking one amp to each coil to see if it would hold up... now thats out the way on to the real questions.

I was thinking a 1.5X1.5x1.5 as a simple test run to come out about 3.3^. My big thing is i dont know how to port. Ive read about it but none of it really sinks in from a text book perspective. Im aiming for a 30-35hz tune seeing as im in a 96 jeep cherokee i imagine that ill have quite a bit in rise and cabin gain alike.

1.do you think if i were to run 3(ish)cubes on a 800.1 tuned in around 30hz on a 1kw rms speaker i would realistically have enough power to effectively move the air i need?

2. If i were to run this set up aimed directly at the back hatch and (assuming i get the port right) in a 100% effecient (for arguments sake) 30hz port would it still sound decent in the high 40/mid50hz range?

3.anyone wanna offer me real world advice on porting/builds in general? (Aero vs slant vs wtfever else im missing) maybe share a funny story to keep me from ragequitting after a few failed attempts? Even just a "good luck post pictures grats noob"?

Any and all feedback welcome.
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Old 11-23-2013, 10:04 PM
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i have a similar vehicle and i liked my 12" in a 35hz box at first but it didn't get low enough for me. if i were you i would tune whatever box you make around 32hz. it should get low enough for you and still be able to bang the upper bass notes as well. if you check the free box design section there should be something there that would work for you. the designs start at post 34. i hope this helps a little. good luck


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Old 11-23-2013, 10:09 PM
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u wanna put 2 15s in 3cu total?
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Old 11-23-2013, 10:20 PM
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Originally Posted by southernbass View Post
I want to try a ported enclosure on one of these to see if i like it.
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Originally Posted by fyerbyrd22 View Post
u wanna put 2 15s in 3cu total?
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Old 11-23-2013, 10:25 PM
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ahhh, all this advertisement shit is making it hard for me to read properly...and op, id still go to around 3.5cu per driver...u can always shrink it
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Old 11-23-2013, 11:16 PM
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Yeah thats what i was figuring im still trying to understand displacement and what specs actually mean im general. And as for hitting a 3.5 specifically i figured 3.3^ would be close enough to keep it nice and simple with 18"x18"x18" for a first run. Assuming i was running this what would i be looking at for port? Actually let me rephrase this (so i can actually get an understanding instead of a cut/paste blueprint) what kind of proportion is typically seen in a standard j-channel box? Or maybe aeroporting is simpler? Thanks for the advice.
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Old 11-23-2013, 11:20 PM
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18x 18x18 doesn't get u anywhere near 3.3cu...a quick design I just came up with is 18" tall, 20" wide and 29" deep...double baffle, sub up, port back, single 6" aero, 18" long, gives u a tuning of 31.08hz...bracing and woofer displacement is .8cu total and your at 3.52cu net, 31.08hz tuning with 8.03sq of port per cube
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Old 11-23-2013, 11:24 PM
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download the torres box calculator...that, sketchup and the12volt.com (for bracing pieces) are how I build all of my boxes
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Old 11-23-2013, 11:31 PM
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And sorry ballz i missed your post on the way thru i did see that thread and was checking it out but im on a phone till the computer gets back in town and its kinda hard to distinguish the different plans at first glance. Im trying understand what im looking at before i really put it all together. I can follow a blueprint dont get me wrong but if i dont like the outcome i wanna understand how i can tweak it. I believe in trying.to get an idea on how it works before i go invest in things ya know? Thanks for the feedback.
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Old 11-23-2013, 11:33 PM
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Will def. Look into that i guess theres a lot more to this than i realized. Keep it coming guys im soaking it up like a sponge. Thanks for the advice.
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