SPL enthusiasts
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Gold Member Username: DrivingrecklessDD 9515f, 148.2 db Mov... Post Number: 5768 Registered: Apr-06 | I got to reading a few articles on SPL and i read that if you align the back wave with the front wave so that they are in phase it would get louder, which seems like common knowledge. But the question that i have is how can this be done? In the article said that the back wave needs to be 3 times as long as the front wave for them to be in phase.another question that arises is how do you measure the back wave? any one with expierence please help. |
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Gold Member Username: Extrmndor3Http://illuzonemu.serv..., ^^^Sick Game Post Number: 7882 Registered: Feb-06 | by box shape wut up puss?? |
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Gold Member Username: DrivingrecklessDD 9515f, 148.2 db Mov... Post Number: 5769 Registered: Apr-06 | what do you mean by box shape??? lol chillin verga |
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Gold Member Username: Extrmndor3Http://illuzonemu.serv..., ^^^Sick Game Post Number: 7883 Registered: Feb-06 | everytime a subs play the back of the cone creates a wave just like the front... the box sometimes reflects the wave back in the cone and creates some kind of cancelation is minimal but it happens.... you can do lots of things to reduce that problems... you can put stuffing on that side or make that side instead of plain like the front built it like a wedge box i dont know if i can explain myself but im in a rush.. NOT:louder it will be but to the ear on preassure wont be too much of a diference. go to the12volt.com you can find lots of info there. |
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Gold Member Username: DrivingrecklessDD 9515f, 148.2 db Mov... Post Number: 5770 Registered: Apr-06 | if you got time explain it more. i already have checked that site out. |
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Gold Member Username: Safe_crackerChicago, IL US Post Number: 4358 Registered: Jan-06 | He isn't talking about cancellation, more like phase allignment. Polo. |
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Gold Member Username: DrivingrecklessDD 9515f, 148.2 db Mov... Post Number: 5771 Registered: Apr-06 | yes polo^ can you help me? |
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Gold Member Username: Safe_crackerChicago, IL US Post Number: 4359 Registered: Jan-06 | A ported enclosure by nature was designed to do this. By the port turning once it naturally brings the 180 out of phase into allignment to help fortify front wave from sub. Now coloration/cancellation happens when you get rearwave energy bouncing off back wall and reflects back through the cone effectively reducing overall output, Back in the day we use to take a square of conveluted foam and glue it on back wall just behind sub. This is ok for an SQ/SQL setup but not good for SPL due to internal turbulances. You have to remember SPL boxes do not play music all that well, don't really sound great and this is why not to mention the tune. SPL boxes use more transfer function then anything else to maximum power efficiency. Polo.. |
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Gold Member Username: Safe_crackerChicago, IL US Post Number: 4360 Registered: Jan-06 |  Here is a box that does this. Actually this is the same as those HO boxes that are going around, same thing. Down fall is boxes become very large, and are very difficult to build. Polo. |
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Gold Member Username: InsearchofbassPost Number: 8882 Registered: Jun-04 | that looks like its petes phase box...im assuming it is |
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Gold Member Username: Safe_crackerChicago, IL US Post Number: 4361 Registered: Jan-06 | Dunno, it was taken on 12/27/06 @ 5:46am and camera used was a Minolta Dimage Z20. Funny how you can get information from a pics properties lOl. Polo.. |
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Gold Member Username: InsearchofbassPost Number: 8883 Registered: Jun-04 | let me find the site with it and ill post it |
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Gold Member Username: InsearchofbassPost Number: 8884 Registered: Jun-04 | http://www.teamtoxicbass.com/~pete/car_audio/phase_box_prototype/index.html there you go |
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Gold Member Username: Safe_crackerChicago, IL US Post Number: 4362 Registered: Jan-06 | Ya, not a new technology at all so technically he is perfecting someone elses work  Polo.. |
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Gold Member Username: InsearchofbassPost Number: 8885 Registered: Jun-04 | its the exact same box...im thinking that one you found was his too |
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Gold Member Username: Safe_crackerChicago, IL US Post Number: 4363 Registered: Jan-06 | Eh, who cares... Those boxes are inherently bad for SPL, look how many turns that port takes... Polo.. |
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Gold Member Username: InsearchofbassPost Number: 8887 Registered: Jun-04 | well that box wasnt built for spl alone it was built as a daily box...any way back to drivings topic |
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Gold Member Username: HdubbTeam Revolution Post Number: 3545 Registered: Nov-04 | wow I've never even thought of this approach. call me sean. =) scott has my number. I know internal angles make a huge difference but that comes with trial and learning |
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Silver Member Username: KravenbloodThat one, Ohio Post Number: 409 Registered: Aug-05 | there is a equation for this somewhere it calculates where the waves will hit together creating a peak in spl cant remeber where i read it or what it is |
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Gold Member Username: DrivingrecklessDD 9515f, 148.2 db Mov... Post Number: 5772 Registered: Apr-06 | come on guys, lol ggive me something. |
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Gold Member Username: Extrmndor3Http://illuzonemu.serv..., ^^^Sick Game Post Number: 7884 Registered: Feb-06 | yeah i was saying something like polo said.. i cant explain too much dude i barely got time to check this site for 5 mins now i have to go and i dont know when ill be back  so yeah man later ill give you some zpeedys knowledge 1 on 1 |
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Gold Member Username: Denali_on_22sI get Bucks like Milwa... Post Number: 5303 Registered: Feb-06 | Is it just me or did Polo contradict himself constantly in this thread. As for the SPL question, I'm not sure. It would be interesting to know though. |
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Silver Member Username: B3n07Louisville, Ky USA Post Number: 845 Registered: Jul-07 | hey driving dose this help http://www.ajdesigner.com/phpsound/sound_wave_equation_spl_sound_pressure_level. php |
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Gold Member Username: Safe_crackerChicago, IL US Post Number: 4384 Registered: Jan-06 | Explain Reece... Polo. |
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Gold Member Username: DrivingrecklessDD 9515f, 148.2 db Mov... Post Number: 5775 Registered: Apr-06 | No ben...is it me or does reece think everyone contradicts themselves? lil rob i think box shape does have something to do with it...LET ME KNOW!! |
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Gold Member Username: HdubbTeam Revolution Post Number: 3554 Registered: Nov-04 | why don't you just start building boxes and test stuff dave? |
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Gold Member Username: DrivingrecklessDD 9515f, 148.2 db Mov... Post Number: 5780 Registered: Apr-06 | ive already started all that...but unfortunatly it isnt gettin me anywhere...guessing games are worthless... |
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Gold Member Username: Nyyfan1315 MAG USA Post Number: 9294 Registered: Jul-06 | What equipment do you have now Dave? |
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Gold Member Username: DrivingrecklessDD 9515f, 148.2 db Mov... Post Number: 5782 Registered: Apr-06 | dont worry about it yanks. youll see when i post pics ... |
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Gold Member Username: Extrmndor3Http://illuzonemu.serv..., ^^^Sick Game Post Number: 7885 Registered: Feb-06 | theres lots of tricks that i know that will help increase the loudness to the hear but preassure will be pretty much the same sometimes will be alil more preassure but will not be a significant amount. one of the main things is the bpx shape.... you have to make sure the waves that are made from the back of the cone wont go back or reflect back to the cone and cause some out of phase... next thing is the cabin or car is another important thing to look for.because it will tell you how you can mount your speaker box so it wont cause the out of phase. |
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Gold Member Username: Loc_outSanta Ana, Ca Resonant Eng... Post Number: 1962 Registered: Feb-05 | dave were are the pic's |
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Gold Member Username: DrivingrecklessDD 9515f, 148.2 db Mov... Post Number: 5783 Registered: Apr-06 | i aint posting pics anytime soon.... lil rob hows this look?  |
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Silver Member Username: DeadrabitPost Number: 345 Registered: Jun-07 | i really don't know much about this stuff but i am starting to build the something very close to the same thing as that pic ^^^^. just trying some new stuff. but this stuff gets really complex and i have no idea what i am doin |
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Gold Member Username: Extrmndor3Http://illuzonemu.serv..., ^^^Sick Game Post Number: 7886 Registered: Feb-06 | driving yeah man something like that pete from team toxic bass has a enclousure like that but is a horn a BIG enlousure and he can do almost 150 at 16hz |
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Gold Member Username: Big_edge_headMilwaukee, Wisconsin MY SUBS GET ... Post Number: 1924 Registered: Mar-07 | I know what Dave has. |
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Gold Member Username: Extrmndor3Http://illuzonemu.serv..., ^^^Sick Game Post Number: 7888 Registered: Feb-06 | a vag1na??? |
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Gold Member Username: DrivingrecklessDD 9515f, 148.2 db Mov... Post Number: 5784 Registered: Apr-06 | shhhhh steve hmm thats what i was thinkin of doing im not to sure about that horn enclosure |
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Gold Member Username: Extrmndor3Http://illuzonemu.serv..., ^^^Sick Game Post Number: 7889 Registered: Feb-06 | do that but with a flare;) |
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Gold Member Username: HdubbTeam Revolution Post Number: 3556 Registered: Nov-04 | take a look in my photobucket dave there is a box pic in the that will help. imo. look up hunterw86 on photobucket then click my name |
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Gold Member Username: DrivingrecklessDD 9515f, 148.2 db Mov... Post Number: 5785 Registered: Apr-06 | you have some interesting pics...like that 180.2...what did that? |
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Gold Member Username: HdubbTeam Revolution Post Number: 3557 Registered: Nov-04 | scott owens. to break his own record |
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Gold Member Username: DrivingrecklessDD 9515f, 148.2 db Mov... Post Number: 5788 Registered: Apr-06 | what does he have though |
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Gold Member Username: HdubbTeam Revolution Post Number: 3558 Registered: Nov-04 | lol. he has that pioneer f250 6 12s in a 6th order bandpass. 52 amps I believe. not sure how much power it comes out to be. |
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Gold Member Username: The_image_dynamicSan Diego, California Post Number: 3796 Registered: Dec-06 | Scott's vehicle competes with 13 TS-W5102SPL subwoofers powered by 52 PRS-D5000SPL amplifiers, 128 16-volt Kinetic batteries and three Ohio Generator 285-amp alternators producing more than 157,000 watts of power.   |
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Gold Member Username: JkidderGunshine , State Flawda Post Number: 3463 Registered: Nov-05 | wow. serious |
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Gold Member Username: JkidderGunshine , State Flawda Post Number: 3464 Registered: Nov-05 | the cisco kid |
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Gold Member Username: ZacdavisBeloit, Wi Post Number: 1639 Registered: Dec-03 | yeah right, the subs scott uses are NOTHING like the ones you or I can buy, trust me on that. I'd go further into detail but its not my business and it wouldnt be fair to pioneer either. and btw, the amps he uses are fosgates haha. they are certainly more than capable of building spl amps though, however scott happened to have bd1501s in it last time i seen him, he was busy setting the world record and first ever 180 on the bnk, we all about crapped our pants. :D |
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Gold Member Username: The_image_dynamicSan Diego, California Post Number: 3808 Registered: Dec-06 | I dunno Zac, I just pasted what I found. I still say Alan Dantes' record was FAR more impressive. I heard him say somewhere they picked Scott for that mag article over him cuz he isn't white. |
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Gold Member Username: The_image_dynamicSan Diego, California Post Number: 3809 Registered: Dec-06 | And JK quit doing that... it is annoying. |
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Gold Member Username: SouthernrebelMonroe, Louisiana 2 DD3515s, 2... Post Number: 6306 Registered: Mar-04 | So Zac, What ever happened to the "commercially available" thing in the rules? (LOL)  |
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Silver Member Username: Wolf_houndPhoenix, AZ Post Number: 612 Registered: Sep-05 | indeed bradeeze |
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Gold Member Username: BernymacCambodia Post Number: 3873 Registered: Sep-04 | "And JK quit doing that... it is annoying." indeed x3 |
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Gold Member Username: JkidderWorlds gunna end, In 2012 Post Number: 3467 Registered: Nov-05 | all types of ppl sign their posts, i just forget so put it in a new post. im not even post whoring compared to most ppl |
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Gold Member Username: JkidderWorlds gunna end, In 2012 Post Number: 3468 Registered: Nov-05 | ill work on my memory tho, thanks |
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Gold Member Username: DrivingrecklessDD 9515f, 148.2 db Mov... Post Number: 5794 Registered: Apr-06 | The thing about alan dante is he didnt work on his car alone he had 3 other people helping...but he just takes all the credit..i also hear hes a real D-bag...fck Alan |
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Gold Member Username: HdubbTeam Revolution Post Number: 3560 Registered: Nov-04 | actually everything in scotts truck has changed. and I've see a cone assy that scott uses lol. its a 8layer flatwind and he has quad spiders. the off the shelf ones are roundwire and %ual spiders. but he is using less amps and subs now and went from a 4th order to a 6th. trust me I saw the truck upclose in person. he now uses the premier amps.he is a very nice guy. so is kyle weatherspoon. both are world class builders ans as far as I know its only thoe 2 that do all the building on the truck and xb |
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Gold Member Username: InsearchofbassPost Number: 8991 Registered: Jun-04 | hunter did you get my pm |
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Gold Member Username: HdubbTeam Revolution Post Number: 3562 Registered: Nov-04 | I just did lol. I honestly don't remember what I was going to ask though. =( im too old for this sh!t lol |
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Gold Member Username: InsearchofbassPost Number: 8995 Registered: Jun-04 | LOL...your how old |
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