posted
I installed a 12 L7 (d4)in a vented 250 box using the exact specs from ther site (2.5 cube). It was powered by a Lanzar 1200d and the subsonic was set to 25hz. However the sub was not playing low frequencies . When i tested it on another system the lows were playing at quarter of the volume that the high bass was playing (using the same volume).
When i checked the dimension on the box on a box calculator program , it shows the box tuned to 40hz . In order to get the box tuned to the 34 hz the port lenght shold have been 26.5 inches rather than 16.5.I lengthened the port (to 26.5 inches) and it started playing low notes very good .
Am i right or am i doing something wrong . I didnt add pollyfill can you tell me how much to add.And where to set the subsonic filter with this new port length.
quote:Originally posted by triniguy: I installed a 12 L7 (d4)in a vented 250 box using the exact specs from ther site (2.5 cube). It was powered by a Lanzar 1200d and the subsonic was set to 25hz. However the sub was not playing low frequencies . When i tested it on another system the lows were playing at quarter of the volume that the high bass was playing (using the same volume).
When i checked the dimension on the box on a box calculator program , it shows the box tuned to 40hz . In order to get the box tuned to the 34 hz the port lenght shold have been 26.5 inches rather than 16.5.I lengthened the port (to 26.5 inches) and it started playing low notes very good .
Am i right or am i doing something wrong . I didnt add pollyfill can you tell me how much to add.And where to set the subsonic filter with this new port length.
Polecat .. Help me !!!!!!!!
Posts: 18 | From: Trinidad | Registered: Oct 2002
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posted
Tracy is not in Stillwater right now. He was with me at the IASCA finals and should be back in Oklahoma tomorrow. I forwarded your message on to the techs and hope they will get an answer to you shortly.
Hang in there, Kid!
-------------------- Alma Gates Posts: 3130 | From: phoenix, arizona - usa | Registered: Aug 1999
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quote:Originally posted by triniguy: I installed a 12 L7 (d4)in a vented 250 box using the exact specs from ther site (2.5 cube). It was powered by a Lanzar 1200d and the subsonic was set to 25hz. However the sub was not playing low frequencies . When i tested it on another system the lows were playing at quarter of the volume that the high bass was playing (using the same volume).
When i checked the dimension on the box on a box calculator program , it shows the box tuned to 40hz . In order to get the box tuned to the 34 hz the port lenght shold have been 26.5 inches rather than 16.5.I lengthened the port (to 26.5 inches) and it started playing low notes very good .
Am i right or am i doing something wrong . I didnt add pollyfill can you tell me how much to add.And where to set the subsonic filter with this new port length.
You must add the port to the 2.5'...that is closer to 2.8' of box with port included....like for example the 3.25' box is 3.64' total port included volume....
-------------------- Team TAZM Team Gates Exotic Dreamz Car Club Team Cartunes
posted
well now im jsut confused so do you make the box 3.25 cub. ft with out the port volume included or not to have a cumulative of 3.25 ft? get back
quote:Originally posted by slipstik04: well now im jsut confused so do you make the box 3.25 cub. ft with out the port volume included or not to have a cumulative of 3.25 ft? get back
The box not including the port is 3.25'...when you add the port it goes to 3.64'.....got it?? If you have any more questions feel freee to e-mail me....
-------------------- Team TAZM Team Gates Exotic Dreamz Car Club Team Cartunes
posted
Thanks Alma....yea, we are already taling via email...sorry to take so long to get back with you, but like Alma stated, was at Finals...sorry for the late response, but we'll get ya going!
-------------------- Team Kicker Kinetik Batteries Powermaster
In Memory of Greg Welch, a friend forever....
Behind every great man.........is an underwear tag!
Posts: 2734 | From: Stillwater, Ok | Registered: Mar 2001
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quote:Originally posted by Polecat: Thanks Alma....yea, we are already taling via email...sorry to take so long to get back with you, but like Alma stated, was at Finals...sorry for the late response, but we'll get ya going!
Thanks alot for your interest Alma . Tracy will get back to me . Thanks again.
Posts: 18 | From: Trinidad | Registered: Oct 2002
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