A little box help...
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Gold Member Username: Snarl2004Audioque 12 SD2.5s, Earthquake P... Post Number: 1465 Registered: Dec-06 | alright can you tell me what you got for a tuning frequency on this box cuz i wanna c if its the same as wut i got. Inside dimentions: 22.5 tall 15.5 wide 23.5 long (should be 4.74 ft^3 total) take out .22 ft^3 for sub displacment vent is: 15.5 wide 4 tall 16 long should be .57 ft^3 for vent displacment 4.74-(.22+.57)=just about 4ft^3 after displacments. So what did you guys get for a tuning frequency. I got 40hz and i was wondering if that was right. |
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Gold Member Username: Logan__tilleI make it rain. Post Number: 8424 Registered: Feb-06 | I got 41.291hz. |
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Gold Member Username: Snarl2004Audioque 12 SD2.5s, Earthquake P... Post Number: 1468 Registered: Dec-06 | if i extended the port and made it like 17inces would that make the tuning around 39? Also wut do u use to calculate tuning? |
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Bronze Member Username: Wylie_coyotePost Number: 85 Registered: Apr-07 | ok i know this will be off subject but i need to know, what on earth does box tuning do, cos i just went out and bought a box for my 12" sub and i thought that was it. is it something you need only consider when building a box?? |
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Gold Member Username: Logan__tilleI make it rain. Post Number: 8435 Registered: Feb-06 | You would need to make it about 17.5" for it to be tuned to 40hz. |
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Gold Member Username: Snarl2004Audioque 12 SD2.5s, Earthquake P... Post Number: 1469 Registered: Dec-06 | gotcha. thx logan. box tuning effects how the sub sounds. you want to buy a box that is tuned at the hz that is reccomended for ur sub. If you tune a box lower you get more low notes. If you tune a box higher u get louder but dont hit the lows as good. In most cases pure competion boxes are tuned between 40-50hz. Dialy driving boxes are tuned between 30-40hz and home setups are tuned between 20-30hz |
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Gold Member Username: Logan__tilleI make it rain. Post Number: 8438 Registered: Feb-06 | Anytime man. |
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Bronze Member Username: CsuhoNashville, Tn Post Number: 35 Registered: Jun-07 | i got 42.34hz since you say .22 for subs and .57 for port that is .79 and the box is 4.74 that equals 3.95 after all displacements if you want to tune under 40hz and ur port doesnt L the best way to do it if the box is already made just put a piece of 3/4 wood the full height and length of the port and it will drop your tuning to 38.25hz. |
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Gold Member Username: Snarl2004Audioque 12 SD2.5s, Earthquake P... Post Number: 1471 Registered: Dec-06 | the box isnt made and i want to have the final tuning between 38-40hz. I just need to no how long to make the port. At the moment the vent is 4" tall but i can add or subtract from that if needed. O and BTW this is for a 15" HDC3(when it comes out) Another thing what do u use to calculate what the box is tuned too? |
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Gold Member Username: Logan__tilleI walk around like I g..., Yea thats ab... Half a brick... Post Number: 8486 Registered: Feb-06 | If you make it 17.5" long it will be tuned to 40hz. And Math  |
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Gold Member Username: Snarl2004Audioque 12 SD2.5s, Earthquake P... Post Number: 1472 Registered: Dec-06 | logan what do u use to figure out the tuning? like are there equations or a program or what? |
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Gold Member Username: Logan__tilleI walk around like I g..., Yea thats ab... Half a brick... Post Number: 8487 Registered: Feb-06 | This is the easiet for what your doing.. http://www.carstereo.com/help/Articles.cfm?id=31 |
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Gold Member Username: Snarl2004Audioque 12 SD2.5s, Earthquake P... Post Number: 1473 Registered: Dec-06 | then it says the vent would have to be 19.94" long to be tuned at 40 |
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Gold Member Username: Logan__tilleI walk around like I g..., Yea thats ab... Half a brick... Post Number: 8488 Registered: Feb-06 | lol no... 17.61" |
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Gold Member Username: Snarl2004Audioque 12 SD2.5s, Earthquake P... Post Number: 1474 Registered: Dec-06 | i looked on DD's website and said for a 4 ft^3 box the port needs to have 64sq inches 16" long. I did on opening of 4.129x15.5 (for 64 sq inches) and the website said the port needed to be 20" long but dd's site says it needs to be 16" long |
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Gold Member Username: Snarl2004Audioque 12 SD2.5s, Earthquake P... Post Number: 1475 Registered: Dec-06 | alright what if i do it like this: 4.84 total ft^3 .57 port displacment .22 sub displacment ---- .79 total 4.84-.79=4.05 Vent: 4" tall 15.5" wide 16" long what would that tune to? |
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Gold Member Username: Snarl2004Audioque 12 SD2.5s, Earthquake P... Post Number: 1481 Registered: Dec-06 | bump anyone? |
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Gold Member Username: ShortysetniesRock Vegas, NC US Post Number: 1427 Registered: Mar-06 | ugh... I have (probably) a dumb question but I'm confused. How do I figure out how many sq inches my port is? |
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Gold Member Username: Logan__tilleI walk around like I g..., Yea thats ab... Half a brick... Post Number: 8492 Registered: Feb-06 | 41.035hz |
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Gold Member Username: Snarl2004Audioque 12 SD2.5s, Earthquake P... Post Number: 1482 Registered: Dec-06 | andew you take your opening and multiply the 2 dimensions together. FOr me its 4*15.5 Logan what do u use to get the tuning? just the qwebsite u showed me? also do u think that would be fine tuning for an AQ |
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