Quick help!!!!!!
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Gold Member Username: JohnfiacA-ToWn, 9515 thumpin... What u bumpin? Post Number: 3382 Registered: Mar-06 | I need help with doing this drop in port, i keep getting confused doing displacment numbers, my specs are... 11565 inchs after sub displacment, and i have a cut out for the drop in ports at 9inchs wide and 14.5 tall i want 16sq inch for each sq ft. to be at 40hz. wood is 3\4 thick. please help fast |
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Bronze Member Username: Talon01York, Pa Usa Post Number: 24 Registered: Jun-07 | your at 106 sq you need 130.5 for 16 sq |
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Gold Member Username: JohnfiacA-ToWn, 9515 thumpin... What u bumpin? Post Number: 3383 Registered: Mar-06 | i need a design for interiot drop in port space to keep it at 40hz after the port displacemnet tho, it keeps confusing me the extiior of the port i would like to keep at less then 9in wide and about 14.25 inchs tall the numbers above for it are max tho.. but i want to leave a tiny gap just so i dont have any trouble if the box is .1-.2 inchs off |
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Bronze Member Username: Talon01York, Pa Usa Post Number: 25 Registered: Jun-07 | sorry switch that posted it backwards |
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Gold Member Username: JohnfiacA-ToWn, 9515 thumpin... What u bumpin? Post Number: 3385 Registered: Mar-06 | haha i was going to say, but i know its 106 at the volume but port displament added will make it smaller. |
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Bronze Member Username: Talon01York, Pa Usa Post Number: 27 Registered: Jun-07 | lets me get with sean for this one give me an hour or so i am at work now |
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Gold Member Username: JohnfiacA-ToWn, 9515 thumpin... What u bumpin? Post Number: 3386 Registered: Mar-06 | alright,the faster the better im trying to get it done today before work and while its still early enough to be loud(cuttin\sanding wood) but ill be back in about a hour so anyone else feel free to do it if you can. Ill paypal 2-3$ to get you motivated  and another 7-8 in a week or to.. funds a bit low at the moment... THANKS!!!~! |
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Gold Member Username: CenusHicksville, Ohio Post Number: 3359 Registered: Jan-05 | talk to cannan, aka marshall white he built a lot of boxes with drop in ports, heres his email marshall_white2004@yahoo.com |
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Gold Member Username: JohnfiacA-ToWn, 9515 thumpin... What u bumpin? Post Number: 3393 Registered: Mar-06 | 5.78 =92sq port area, after all displacments... i think i have it. can anybody just double check this for me? The wood is 3\4in thick. and only being used on 3 sides of the port, i will use the box wall for the last port side. 5.78 =92 port area 92-97sq in. 6.96w x13.5tallx16deep 3\4wood no 4th side(box wall is port wall) = 94sq the port area is the center of the 2 diff port sizes i used to get displacments as close to perfect as possible to keep a accurate port area.(getting port dis, subtracting from box net, and refiguring new box size with displacment, and getting a new port area and centering in between the 2. thanks |
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Gold Member Username: JohnfiacA-ToWn, 9515 thumpin... What u bumpin? Post Number: 3398 Registered: Mar-06 | BTW i played the sub for a bit on 2Krms in the box without any port just a big 14.5x9in opening for the drop ins to go. It was double baffled so about 1.5in thick. For having no real tuning the sub still got pretty low and loud, just that you couldnt feel the lows as much, but you could deff hear them. IS that just the DD or what? ive never got a sub to get that loud and low without any tuning. |
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