posted
jsut a quick question for aramai.....u say u r from trinidad, well i go to college with a guy from trinidad. his family owns zigs machine shop and they alos have a racecar there. do u know him? his name is anand.
posted
quick question, how do i change my round ports to rectangle??? my ports as it stands right now are 4"round by 12.5"long, how do i convert it to rectangle??? anyone??? thankx
Chris
-------------------- Founder of team NOIZE FACTORY Member of Team Gates Beliver of ABC boxes Clarion DXZ555MP Head Unit 1 HUGE ABC box Dissapointing 148.7 AC190 Mic
posted
hah, i must be getting anoying, but i wana get this right the first time so i dont halfto repeat it. i re calculated my box. and with what i gote i was a lil surprised with the result. I ended up with a box volume of 4.73cu.ft the dimentions where 33 wide 13.75 hight 18 deep with ports 4x3x12.5 dose this sound good to u guys??? thankx
Chris p.s. the dimentions are internal dimentions
[ 12-04-2001: Message edited by: Bass_Mechanic ]
-------------------- Founder of team NOIZE FACTORY Member of Team Gates Beliver of ABC boxes Clarion DXZ555MP Head Unit 1 HUGE ABC box Dissapointing 148.7 AC190 Mic
posted
I don't know your friend bryan666999. I've never even heard of zigs machine shop. The more popular machine shops here are Francis Engineering, Mustapha's Engineering and Mack Rampersad. As for the race cars, I haven't allocated time to the tracks yet, but the most popular car here is the SKF Lancer, it's supposed to be among the fastest 4 cylinder cars in the world if not the fastest.
Posts: 20 | From: Trinidad | Registered: Nov 2001
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posted
Ok, since no seems to be able to help me out with the links. Can any of you answer these questions: 1. Is WinISD a good enclosure design program? 2. When I get a box volume from WinISD does that include the allowance for the port displacement and the subwoofer displacement? 3. If I want to build an ABC box, do I use WinISD to design an enclosure with 2 ports tuned to whatever frequency I want and then add another chamber to that box exactly half the size of the one I got from WinISD or do I use half the volume of the WinISD enclosure - 1 port volume. I hope you can understand what I'm asking.
Posts: 20 | From: Trinidad | Registered: Nov 2001
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quote:Originally posted by aramai: 1. Is WinISD a good enclosure design program?
yes
2. When I get a box volume from WinISD does that include the allowance for the port displacement and the subwoofer displacement?
no, that would be how much net airspace the sub needs to 'see'
3. If I want to build an ABC box, do I use WinISD to design an enclosure with 2 ports tuned to whatever frequency I want and then add another chamber to that box exactly half the size of the one I got from WinISD or do I use half the volume of the WinISD enclosure - 1 port volume.
yes, but i would suggest tuning just above 30Hz
I hope you can understand what I'm asking.[/QUOTE]
yes, i understand
hope this helps,
-later
-------------------- - Wes Sowers - Discount Car Stereo L.L.C. Kent, Wa 98032 (206)824-5875
posted
Dayum - you leave a little post one day and...
-------------------- Blow your mind - PORT your box!
D R A G U L A Let us Prey.... 1966 Cadillac Superior Crown Royale Hearse SS5+ Posts: 3690 | From: Abbotsford, BC, Canada | Registered: Mar 2000
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posted
What if I were to fire a single 10 inch sub down and fire the 2 ports through the rear deck? Would this have any adverse effects? I don't really want to point the sub rearwards. Also, if that doesn't work, would point the sub up or to the front be better (ports still going through the rear deck)?
Also, does it matter if acoustically transparent material covers the mouth of the port? I really don't want to have to make a new rear deck or cut holes in it. I was planning on firing through the old 6x8 speaker holes.
Does it matter how far apart the 2 ports are on the outside of the enclosure? Could they be at opposite ends with the sub in between?
Any recomendations for a JL 10w1 sub? Would one JL 10w1 with 150 watts in the ABC enclosure be better than 2 JL 10w1s with 150 watts in a sealed enclosure (possibly downfiring)?
Oh yeah, and how high does the box go in freqency response? I am going to be running 6.5s in the doors. I really prefer SQ to all out SPL, but since I don't plan on competing I can give up a few points on SQ
Sorry for all the questions, but I was all ready to put the 2 10w1s in the spare tire well before this came up. Using 1 sub would keep me from having to purchase another amp.
Thanks, Eric
[ 12-05-2001: Message edited by: WhiteLX ]
-------------------- 1992 Mustang 5.0 notchback Featured in 5.0 Mustang magazine 5/01 1986 Merkur XR4Ti http://members.aol.com/whitelx
Posts: 18 | From: So Cal | Registered: Dec 2001
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posted
Thanks MrFlamboyant. I just have some other questions if you don't mind. If I use WinISD to get a box volume for a JBL LC-S1250w sub, for a closed enclosure I get 1.072 cubes tuned to about 57Hz, if on the other hand I choose a vented box, I get 1.984 cubes tuned at about 36Hz with 1 4" port about 12" long. So what you are saying is that for the closed box I still have to make allowances for the subwoofer displacement (Xmax*Vas) and that the extra 0.912 cubes for the vented box does not include the port displacement? I may have another question depending on the answer to this one. I hope you don't mind me asking so much.
Posts: 20 | From: Trinidad | Registered: Nov 2001
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posted
hey guys, just finished my first abc box. i just went for a lil test drive, and all i gota say about that box is WOW its amasing!!!! ill have my picx of the fabacation in a few days time. Man i swear i just gained like 12 db in that lil car. Hope all my abc boxes turn out like this one.
-------------------- Founder of team NOIZE FACTORY Member of Team Gates Beliver of ABC boxes Clarion DXZ555MP Head Unit 1 HUGE ABC box Dissapointing 148.7 AC190 Mic Posts: 571 | From: Sudbury, ONT, Canada | Registered: Jan 2001
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posted
Hey bass_mechanic. If you plan on building more of these babies, maybe you hsould try my abc design proram and see if it's any good for in-car. It was designed for home but it gives flat response.
I have another abc design program at home that can (kinda) evaluate a design(by suggesting the recommended design). It will be uploaded eventually, available by e-mail request.
alainprice@hotmail.com
Posts: 768 | From: Ottawa, On, Canada | Registered: May 2000
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quote:Originally posted by emu: Hey bass_mechanic. If you plan on building more of these babies, maybe you hsould try my abc design proram and see if it's any good for in-car.
i tried your program it doesn't figure port length right for a 5 cube abc it says to make the ports 13 inches. i asked mr. flamboyant if he thought it was right. he used winisd and it gave him 15 inches. now i would trust what he said since he has made 40+ of those boxes.
