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  1. #136
    davesexplorer's Avatar
    davesexplorer is offline Too much fun.



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    Re: Get Your SPL Related Questions Answered Here!

    Quote Originally Posted by Megalomaniac
    How do i know what my car likes, is there a certain process to achieve this. and also I know most people who do SPL tune high. but i am curious I would like to attempt now to go for the lower notes like 28hz or better yet go for more SQl I don't know man, It feels like puberty again,so many things i would like to do but i don't know what to do.
    What some ppl say works for the resonant/peak freq (besides other ppl experiences) is using a general sealed enclosure with a sub, playing a frequency sweep and reading the results, taking into consideration things like the sub/box peak, seats folded, console open, things laying around etc. You can get really nitty gritty, but most people that really want pure spl test, then test, then test again, and again and again.. kinda turns into a job I guess? I never got that into it though. Once you filter out all the other junk, you'll end up getting a frequency that your car "likes", my 2dr exploder for example likes around 48 hz.. dont know why but it does, a 4 door on the other hand would be better of with 50-53hz. The way I understand it this is where all the things in the car, on the car, and the car itself are moving in unison at or around this frequency and creating additional support for the speakers playing the tone. (correct me if I'm wrong)

    You can look at response graphs for more explanation, get your vehicle on a termlab and you'll see. Take any normal vehicle, play a tone and not only will you see the big hump where your tone is but you'll probably see a bunch of other humps too. If you take an extreme vehicle in the same way, those little humps will all but dissappear - in an extreme veh. you are essentially making the interior burp friendly...

    Tuned high ***** for daily period. I hated when I had my high hz boxes in my truck. If you want daily tune lower and sacrifice the numbers.. that's what I did. (although not besting 150 pi$$ed me off) Or just live with *** sounding bass and tune high. Sorry so long... Others can probably chime in better than I can anywhoo.



    '03 Expedition FX4 5.4
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    Sub amp???

    My Rides




  2. #137
    1loudsuv's Avatar
    1loudsuv is offline WHATS A HOME THEATER?



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    Re: Get Your SPL Related Questions Answered Here!

    Quote Originally Posted by davesexplorer
    I'm no expert... but... in dbdrag at least I noticed that the loudest folks had or the easiest vehicles to get loud -

    for Street Classes go for a CRX, 4 door Explorer 95-01(NOT A 2DR I found that out the hard way ) or if you can find one a Panda or something small. A Jeep Wrangler made it up there a lil while back too.

    Super Street NW/W Classes, as above with the addition of Caravan's, Astro's, Big Old Ford Vans, SUV's, Vans or pickups with cutthrough's/blowthroughs.
    2 doors can get as loud as the 4 doors. theirs a couple of things i dont know if you tried but if you want to know go ahead and ask. i know i can get you to at least a 150.9 in street b but depending on eqiupment....

    i switched to street a i was doing a mid 151 with one sub that was rubbing an old 2150 wich didnt have much life left in it. and amps at 1.5 ohms strapped

    im running the amps at .7 strapped and put an nsb 90 (i was dropping to 8.5 with the 2150 now im dropping to 10.0 volts) and ive added angles inside the box and alot of ductape....

    i really dont know what score im doing could be 149 could be 154 who knows till i put it on the mic but i might not i might just hit tommorows without any testing...

    so ask any questions you want




  3. #138
    davesexplorer's Avatar
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    Re: Get Your SPL Related Questions Answered Here!

    Yeah let me know anything you'd like to divulge... keep the rest I dont need to know all your secrets.

    My equipment so far is a Kinetik Monster, Solo X 12" (When it finally comes) and a Hifonics Goliath amp. Eventually I'll get another solo, but that probably wont be till next season.

    My hurdle in the sport has been the lower frequency peak, I literally switched my old crx box, w/ two dd 9512's and two orion 2500D's to a four door and went from a 148.9 to a 151.x... on a termlab. (From a 48hz in my truck, to a 51 in a friends) Given it wasn't a fart box, but still.... I'm not goin nuts this season, maybe a show or two. Thanks.



    '03 Expedition FX4 5.4
    Alpine IVA-W200 & Blackbird Docked
    Kicker SS 5 1/4 Components Front
    Kicker RS 5 1/4 Components Rear
    Kicker SX900.4
    DD 9515F

    Sub amp???

    My Rides

  4. #139
    TooLowTooGo's Avatar
    TooLowTooGo is offline 2Low2Go



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    Re: Get Your SPL Related Questions Answered Here!

    Quote Originally Posted by davesexplorer
    a 4 door on the other hand would be better of with 50-53hz.
    not all. my 4 door is the same as ur 2door. it likes 48hz.
    It doesnt matter even if the box is tuned to 55hz. once i hit that 48hz tone, the db's will go up. very strange.



    Headunit: Alpine 7995
    Electrical: Iraggi 260 and a bad battery
    Subs: (2) 12" MTX 9500's
    Subs amp: (2) PA A3000DB's
    Speakers: (4) Orion p6.2's and (2) 8" MTX 4500's
    Speaker amp: (1) PA A600-4HP
    Wiring: Knu Koncepts
    148.2 and going up

    149.5 - NEW Term Lab (4 12" MTX 7500's powered by 1 Orion 2500D @ 2ohms) - NEW SCORES TO COME!!!!

    aim: FromJerzey

    REFs: Naxis2k1, NjccBflo, HCCAfan, Bavarian3, Mr. Loki, Bigrick31, JeffyZ33, Harrison486, Jester1318, Ctminime, lslugz, enzowho
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  5. #140
    1loudsuv's Avatar
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    Re: Get Your SPL Related Questions Answered Here!

    Quote Originally Posted by davesexplorer
    Yeah let me know anything you'd like to divulge... keep the rest I dont need to know all your secrets.

    My equipment so far is a Kinetik Monster, Solo X 12" (When it finally comes) and a Hifonics Goliath amp. Eventually I'll get another solo, but that probably wont be till next season.

    My hurdle in the sport has been the lower frequency peak, I literally switched my old crx box, w/ two dd 9512's and two orion 2500D's to a four door and went from a 148.9 to a 151.x... on a termlab. (From a 48hz in my truck, to a 51 in a friends) Given it wasn't a fart box, but still.... I'm not goin nuts this season, maybe a show or two. Thanks.
    empty your pm box some good info going your way i see a 152-53 coming out of you if you listing




  6. #141
    TooLowTooGo's Avatar
    TooLowTooGo is offline 2Low2Go



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    Re: Get Your SPL Related Questions Answered Here!

    my pm box is clear if u wanna send em to me 2



    Headunit: Alpine 7995
    Electrical: Iraggi 260 and a bad battery
    Subs: (2) 12" MTX 9500's
    Subs amp: (2) PA A3000DB's
    Speakers: (4) Orion p6.2's and (2) 8" MTX 4500's
    Speaker amp: (1) PA A600-4HP
    Wiring: Knu Koncepts
    148.2 and going up

    149.5 - NEW Term Lab (4 12" MTX 7500's powered by 1 Orion 2500D @ 2ohms) - NEW SCORES TO COME!!!!

    aim: FromJerzey

    REFs: Naxis2k1, NjccBflo, HCCAfan, Bavarian3, Mr. Loki, Bigrick31, JeffyZ33, Harrison486, Jester1318, Ctminime, lslugz, enzowho
    For more refs click here and here

  7. #142
    954runner's Avatar
    954runner is offline just bumpin my music



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    Re: Get Your SPL Related Questions Answered Here!

    ok i guess ill n00bx it up a bit...
    my old sub-stage consisted of a 15" Diamond D9 off a JBL bp600.1 in a 4.5 cubic foot box, tuned to about 25 Hz. when i had it metered, i had a 137.9 db, which i was not pleased with at all.
    so, i built a new box. same sub, this box is 3.5 cubic feet, tuned to 37 Hz. also, i'm replacing the JBL with a hifonics bx1500d (1000 watts @ 2 ohms). do you think i will see a 140 on the screen this time? the hifonics is rated at 14 volts, and i know i can't sustain 14 volts on a consistent basis (probably more like 13) so will i see about 800 watts or so?



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    ///kyle


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    amp jbl gto 755.6

  8. #143
    davesexplorer's Avatar
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    Re: Get Your SPL Related Questions Answered Here!

    Quote Originally Posted by 1loudsuv View Post
    empty your pm box some good info going your way i see a 152-53 coming out of you if you listing
    I listened... and built

    Not metered yet, it may never be as I got a good deal on a second SOLOX so I'll have to redo everything again.



    Has 3- 4" aero's toward the back, box is 3.7 b4 disc. It does get hella loud and pretty low!



    '03 Expedition FX4 5.4
    Alpine IVA-W200 & Blackbird Docked
    Kicker SS 5 1/4 Components Front
    Kicker RS 5 1/4 Components Rear
    Kicker SX900.4
    DD 9515F

    Sub amp???

    My Rides

  9. #144
    xtremebassjunky's Avatar
    xtremebassjunky is offline Is it ever loud enough?



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    Re: Get Your SPL Related Questions Answered Here!

    out of curiousity what do you guys think of me using a 2005 toyota highlander for a daily/spl vehicle.... right now I have a 96 Jimmy 4dr and have a single 15" L7 to hold me over for now...


    anyways the real question is what do you think of 2 Z2 amps both running @ 1 ohm pushing 4 9512s...basically it will be a 16000w system...what kind of #'s are possible? I have some help for the project when it starts this spring from a buddy of mine (Brian B.) but I was still interested on your feedback... OBVIOUSLY major electrical upgrades, but I thought this would make for a very good setup for Street Beat 3 and for the daily...




  10. #145
    aaron7114's Avatar
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    Re: Get Your SPL Related Questions Answered Here!

    I have a 94 accord with two 15 inch L5s with a Hifonics BX1605D (1600 RMS). Right they they are in two sealed boxes but I am planning on porting them this weekend. I want to port them this weekend because there is a competition I am wanting to go to the following weekend.

    Ive heard that CRX style (subs facing up, ports facing the back of the car) gets the loudest. However how well does that sound? I dont see how it could sound all that good with the sub facing up towards the trunk. I really dont see how it would get loud either.

    I really wont be entering that many comps, just when they have them in jonesboro (20 miles north of me)...so I would like it to sound fairly good as well.

    So do you think it would be better to do the CRX style or subs facing towards the back or towards the front? Please post all your suggestions.



    Headunit:
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    Mids and Highs:
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    150.4 db @ 47 hz on TL with 3 day old subs. Done a 156.8 since then on Audiocontrol
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  11. #146
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    Re: Get Your SPL Related Questions Answered Here!

    What are some ways to squeeze more spl out of a sealed truck box?




  12. #147
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    Re: Get Your SPL Related Questions Answered Here!

    Ok i have a competition on the 16th. And dont know what class im in. And its a outlaw + streetbeat event

    I have one 15" sub and orion 2500D and one battery.

    I have an amp powering my speakers but i will take that out if that bumps me up a class

    thanks

    And its for USACI

    Outlaw and streetbeat
    Last edited by ThomasG; 06-11-2007 at 06:52 PM.



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  13. #148
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    Re: Get Your SPL Related Questions Answered Here!

    anyone?



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  14. #149
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    Re: Get Your SPL Related Questions Answered Here!

    Well my turn for help

    I'm Trying to find out what class to do in meca.

    Setup.

    Vech: 1997 F150 Ext Cab(3rd Door, Took out backseat can put it back)

    First time competing ever.

    Sub Stage: Fi Bl 15 Fullyloaded- Amp: Crunch 1500\1 (should upgrade don't know what though)

    Battery:Yellow Top(Biggest i can have in Amature)
    Box: 4cubes at 32hzish.

    I do not know what my truck peak's at and i know before i figure that out i need the amp i'll be using mostly. So if you have any idea's on a amp please pm me.

    But my question is. Would this be good enough for As1-3? All i want is to bring home a trophy or something. 3rd isn't a problem for me

    What i'm saying is, if you were in my shoe's what would you do?




  15. #150
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    Re: Get Your SPL Related Questions Answered Here!

    Also anyone with a tl i can use to test in the Ohio area? i'm in Akron btw.




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