Tip for you bass heads
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Gold Member Username: InsearchofbassPost Number: 5448 Registered: Jun-04 | we built 2.50 cubic foot box with a 16 square inch port tuned to 47 hz for the audioque 2.5 12 and hit a 141.7 db with the port in one placement and a 138.3db in another ....but I also believe where the port lays out inside the box demensional wise can help or hurt your score |
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Gold Member Username: InsearchofbassPost Number: 5449 Registered: Jun-04 | 16 square inches should read 14 square inches |
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Platinum Member Username: BestmankindSQ IS THE ONLY WAY Post Number: 13926 Registered: Oct-05 | nice. how does that 47hz box sound with music? |
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Gold Member Username: InsearchofbassPost Number: 5451 Registered: Jun-04 | this box was built fo spl in iasca rookie class not music.....we tried the 47 hz tune thing on music with the american bass dx 10 contrary to opinion it wont play lower safely on music |
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Gold Member Username: InsearchofbassPost Number: 5452 Registered: Jun-04 | we put the american bass in 1.58 cubic feet to 46.6 hz and hit 135.7 but when we put it in 2.c feet at 47 hz it hit 133. something.....and the box program claimed a gain in the 2.50 cubic foot box.......so that proves programs arent always right and in this case it was off 2. something db.....disappointing but happy to learn real life tips at the same time |
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Gold Member Username: InsearchofbassPost Number: 5453 Registered: Jun-04 | we put the american bass in 1.58 cubic feet to 46.6 hz and hit 135.7 but when we put it in 2.50 cubic feet at 47 hz it hit 133. something.....and the box program claimed a gain in the 2.50 cubic foot box.......so that proves programs arent always right and in this case it was off 2. something db.....disappointing but happy to learn real life tips at the same time |
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Platinum Member Username: BestmankindSQ IS THE ONLY WAY Post Number: 13927 Registered: Oct-05 | some pics sean. i would like to see the boxes you do. seems like you are having a lot of fun there.  |
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Gold Member Username: InsearchofbassPost Number: 5456 Registered: Jun-04 | honestly right now I design them.....have yet to build one....cut with a jigsaw once and a hole saw.....never was hands on with tools but in the future I will be......my bro builds the boxes right now or in the past my friends did.....learning while I wait to start my own builds by my hands though...as you can see |
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Gold Member Username: InsearchofbassPost Number: 5457 Registered: Jun-04 | heres what one looks like ....you can see the video 35 hz port tune 2.50 cubes net audioque 2.5 12 600 rms mtx 4501 |
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Gold Member Username: InsearchofbassPost Number: 5458 Registered: Jun-04 | were up to a 142.4 db now with it |
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Gold Member Username: InsearchofbassPost Number: 5459 Registered: Jun-04 | http://www.youtube.com/watch?v=8bwKXrh6Pck |
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Silver Member Username: Phil_salisburyPost Number: 273 Registered: Sep-06 | Well, first off, a program is only a tool and it making " claims " vs real world application it two completely different issue's because a program cannot account for factors that impact it. If I had resources available to me, I would like nothing more than to build enclosure's at different spec's and test them with the sub it's design for to meter it's response and compare that to the programs modeled response. In that I would learn where the real world of the outcome vs the program and then work towards better modeling the design with the program. |
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Gold Member Username: InsearchofbassPost Number: 5460 Registered: Jun-04 | yeah in car response can very alot with minor changes sometimes.....just firing forward ccompared to reverse forward was 3db less output ....changing positions though can boost low end bass and lower highend bass (so far low end ive seen extreme low end go up .8 db just by placement) |
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Gold Member Username: Tdeaton1021Near Tampa, Florida USA Post Number: 4312 Registered: Sep-04 | yes, placement of the port can change tuning as well. Pete at TTB was telling me about this....but i can't calculate it myself... why such a small port sean? that thing should have atleast double the port area for an all out SPL box. ... my first attempt at an SPL install for that sub would be 1.5 cuft with a 6 inch port tuned to w/e your car hits best at....well 7hz under. |
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Gold Member Username: InsearchofbassPost Number: 5462 Registered: Jun-04 | we are limited to 14 square inches because thats the limit for rookie class 1 in iasca....do you have a link to what pete was talking about? |
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Gold Member Username: InsearchofbassPost Number: 5463 Registered: Jun-04 | i had a similar idea as this a while back like a year ago petes ttb personal page For whatever reason, a traditional flare curves outward 45 degrees along a circular path. And though, with a wide enough curve, such flare contour does contribute to linear port velocity, the contour, itself, is not geometrically optimal. The idea first came to me as I was reading up on the "perfect port" geometry and wondered what would happen if the flares were to be replaced with small exponential horns. |
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Gold Member Username: InsearchofbassPost Number: 5464 Registered: Jun-04 | http://www.teamtoxicbass.com/~pete/local_initiatives/index.html |
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Gold Member Username: InsearchofbassPost Number: 5465 Registered: Jun-04 | http://www.teamtoxicbass.com/~pete/car_audio/project_hellboy/index.html |
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Gold Member Username: Tdeaton1021Near Tampa, Florida USA Post Number: 4314 Registered: Sep-04 | Man i cant believe they limit you to port area. I don't have a link to what he was talking about... you could ask him on his forum though, thats where it was anyways. www.hexibase.com/forum i have read both of those links multiple times... i wonder if having a collector cavity on your box would help you out... heck you could put it in with duct tape and if it doesnt help take it out. |
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Silver Member Username: BoomtankRochester, NY USA Post Number: 313 Registered: Oct-06 | are those numbers from a tl? legal? just wondering |
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