I think that I have said too much....................I must go now................the SPL Ninja's are upon me Need more power? UP YOURS!! with Excessive Amperage! Posts: 6070 | From: Northern California | Registered: Nov 1999
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posted
i just built an ABC box, if someone can post pics on here ill send you the pics of my box? oh ya it is for 2 shocker SS15's
Aaron
-------------------- old system 2400watts RE15XXX a 153.9 on a linear X new setup-2 10w3's and 1600w Posts: 670 | From: spring lake NC | Registered: Aug 2002
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posted
got my ABC built for my reg. nissan hardbody, it is alot louder and lower than my .5 cuft sealed box was, and still is tight w/ the upper bass, I get some port nosie on certain songs at high volume, but they are very close to my head so go figure.....I can live w/ it.... it is 1.6 cuft and has a kicker CVR8 dual 4 ohm voice coil, driven by a kenwood kac-819 @ 2 ohms w/ 230wrms, ss filter set at 25Hz.......got pics too!!!!..... go ahead and rip on me cause of my wires, give it to me good, cause I need to fix that sh*t......LOL http://www.picturetrail.com/gallery/view?p=999&gid=2833312&uid=1484985&members=1
posted
ok guyz, i seem not to be able to access the original links posted on the first page of this post about ABC box! can someone please post a link to somewhere, where i can find more info on ABC and how to build one?
posted
I read through the first 10 pages and the last three...
So what I gather is this:
1) Model up your sub in WinISD for a PORTED box. Preferably as large a box as is practically possible, either for the sub's specs or for your vehicle's limitations. 2) Take that model, and divide it into two chambers, 2/3 on one, and 1/3 on the other. 3) Put THREE equal sized ports, one in the big chamber to outside, one on the small chamber to outside, and one in-between the two chambers. Be ANAL about accounting for port and subwoofer displacement. 4) You're done.
Question - How do I determine port size? This I'm a little iffy on. Do I use the WinISD port size suggested for the original undivided box? For example - for my CVR12 (iso loaded), I get 3CF, 30 HZ gives 4x4 sq port, 21 inches in length. Do I then use THREE 4x4 inch square, 21 inch long ports, or do I recalculate based on the smaller chamber sizes?
quote:Originally posted by keefyboy: I read through the first 10 pages and the last three...
So what I gather is this:
1) Model up your sub in WinISD for a PORTED box. Preferably as large a box as is practically possible, either for the sub's specs or for your vehicle's limitations. 2) Take that model, and divide it into two chambers, 2/3 on one, and 1/3 on the other. 3) Put THREE equal sized ports, one in the big chamber to outside, one on the small chamber to outside, and one in-between the two chambers. Be ANAL about accounting for port and subwoofer displacement. 4) You're done.
Question - How do I determine port size? This I'm a little iffy on. Do I use the WinISD port size suggested for the original undivided box? For example - for my CVR12 (iso loaded), I get 3CF, 30 HZ gives 4x4 sq port, 21 inches in length. Do I then use THREE 4x4 inch square, 21 inch long ports, or do I recalculate based on the smaller chamber sizes?
Thanks all! -keith
The latter. Be SUPERANAL about how much the box is off by. I think on a 3 cubic foot box, mine is off by 12 cubic inches. The only problem is I put the stupid 8 in the wrong damn chamber...
<shakes head laughing at my own stupidity>
Building a coverplate after finals to hide the screw up. LOL
-------------------- 2005 Florida Street C Champion 2004 SBN Street C Champion 2004 SBN IDBL No Wall Champion 2003 NOPI Nats Street B Champion
posted
i remember reading some of this post a long time ago, and well back then i didnt even know about tuning a regular ported box, so this was all too much to understand. but now after having built a few boxes, i think i might give the ABC a try. it is still a good box to build? i havent seen much talk of it recently. think it would be worth giving it a try with a brahma 10?
Posts: 60 | From: PA | Registered: May 2003
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quote:Originally posted by J37X: i remember reading some of this post a long time ago, and well back then i didnt even know about tuning a regular ported box, so this was all too much to understand. but now after having built a few boxes, i think i might give the ABC a try. it is still a good box to build? i havent seen much talk of it recently. think it would be worth giving it a try with a brahma 10?
Yes it is! I've build one for a Vega 124... It was hell loud, and had major lows, and "thight" upper bass...
posted
Well guys, I was going thru the post, and got a lille confuse on the aplication of an ABC box.
Got a question had anyone done an ABC box for a single MTX RFL? If not could anyone help me out with ABC box dimensions recomendation for this woofer? got my ass kick in last competition and I want revenge.
posted
what you need to do is find out how big of a box the sub can safley handle ported. then model the box as a ported box with two ports tuned around 32hz.
this will tell you how long each port needs to be. when you build the box you use these two ports and another on exactly the same on the inside connecting your two chambers.
just to hopefully make it a little easier for ya, here's what i did and it helped BIG time.
find out what size box you need, in this case lets say 9^ft3. then that meas you would need one chamber to be 6 and the other to be 3. decide how tall and deep you want the box. then when you doing you calculations you can do it for two seperate boxes eventhough it's really one.
so you'd take 29.875 x 14.25 x ? untill it's as close as you can get to 6 after port and sub displacement. then with the number you get, divide it by two and write it down. this is what you want the smaller chamber to be after displacements.
basiclly your taking the depth and height that you chose for the whole box and doing the width seperatly (be sure to factor the divider in)
i hope all this rambleing helps in some way, i just know that this was the easiest way that i found.
-------------------- 1st gen. S10 Blazer
1 re 18hc
1 Fried Tsunami DB1100
1 7.81 cubic ft. net box
97.75 square inches of port
38.7hz
no more BOOM Posts: 287 | From: u.s.a | Registered: Aug 2002
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posted
ok took me forever to find this but here i am.
what is the BEST demensions for two alpine type R 15's in this ABC box and port size
-------------------- 1988 s10 blazer 4wd 2.8 V6 crane cams power max camshaft edlebrock headers port and polished heads flowmaster origanal 40 series 5 speed
Alpine CDA-7894 deck Alpine MRD-M500 two Sony XS-L151P5 subs infinity 4x6and 6x9
how should i make sloted ports tuned to around 35 Hz?
-------------------- 1988 s10 blazer 4wd 2.8 V6 crane cams power max camshaft edlebrock headers port and polished heads flowmaster origanal 40 series 5 speed
Alpine CDA-7894 deck Alpine MRD-M500 two Sony XS-L151P5 subs infinity 4x6and 6x9
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