Simple dB explination
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Bronze Member Username: ReppinqcCharlotte, NC USA Post Number: 22 Registered: Jan-07 | can someone explain dB to me because i want to know but i just dont get it completely. For instance about how much louder is a system that puts out 110dB than a system with 100dB. (and dont say 10dB's louder pls LOL) |
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Silver Member Username: Trey4sportsPost Number: 453 Registered: Sep-06 | heres some general rules. every 10 db's it sounds like your doubling loudness to the human ear. it takes a doubling of power (in watts) to gain 3 db's. if you add a second woofer of same size to your current setup look to add anywhere from 2-6 db depending on install. its much easier to gain DB's if your system isnt loud, once you start getting in the 140's it gets more difficult to add db's. 150 Db use to be the gneral rule for an insanely loud system, nowdays its more like 160s for a crazy loud system. never list a sub and amp and ask how many db's youll do, youll get flamed bigtime bc DB's are install dependant BIG TIME!.if you want huge numbers you must get a HO alt. rewire your big 3 to 0 ga, get good batts and upgrade your electrical system. the majority of the time mainstream audio brands are rip offs so try to stay away if you can. thats about all i can think of right now |
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Silver Member Username: Nd4spd18Post Number: 361 Registered: Jul-06 | ^^^^ What he said. Excellent post trey. |
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Silver Member Username: Trey4sportsPost Number: 455 Registered: Sep-06 | thanks M.S., a lot of that i learned the hard way  |
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Gold Member Username: JohnfiacIL Afghanistan,... Post Number: 1473 Registered: Mar-06 | Im hoping ill be in the 150's.... or higher |
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Bronze Member Username: ReppinqcCharlotte, NC USA Post Number: 23 Registered: Jan-07 | killa what you gonna run to put your dB level into the 150dB+ range |
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Gold Member Username: WingmanaliveA pic is worth 1000 words Post Number: 3836 Registered: Jun-06 | Quote from a good member who hasn't posted in awhile: "Your charging system is by FAR the most important part of your system. Trust Me."  |
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Bronze Member Username: ReppinqcCharlotte, NC USA Post Number: 24 Registered: Jan-07 | meaning your battery and or amp? |
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Silver Member Username: Nd4spd18Post Number: 377 Registered: Jul-06 | haha meaning your HO alt and wiring |
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Bronze Member Username: BlkwardogAdel, Iowa Usa Post Number: 96 Registered: Mar-06 | dude im in alg.2 rite now and we jus had an exponential growth problem dealing with how db's amplify so much as u go up. i think theres some big formula for it and it may deal with logarithms or sumthin |
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Bronze Member Username: Andy_hPhillyUS Post Number: 46 Registered: Aug-06 | half right, he means your alternator, batteries, and wiring i.e. the big three and the correct gauge to get the needed power to the amps |
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Bronze Member Username: Andy_hPhillyUS Post Number: 47 Registered: Aug-06 | haha i was beat to the answer, m.s is correct |
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Silver Member Username: Trey4sportsPost Number: 463 Registered: Sep-06 | me 2 man. alg 2 aint bad tho, are you in 10th or 11th? |
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Silver Member Username: Nd4spd18Post Number: 379 Registered: Jul-06 | HO alt and wiring, that's what I just said. Batteries don't do a damn thing with the engine running unless your alternator is inadequate. Now for comps, with the engine off, then it's all about the batteries. |
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Silver Member Username: Nd4spd18Post Number: 380 Registered: Jul-06 | ^^^ Sh!t. Disregard my last post. I thought andy was talkin to me. |
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Bronze Member Username: ReppinqcCharlotte, NC USA Post Number: 25 Registered: Jan-07 | lol i know you werent asking me but im in 11th...what kinda system you got? |
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Gold Member Username: Nyyfan13Fi SSD USA Post Number: 3696 Registered: Jul-06 | "Quote from a good member who hasn't posted in awhile: "Your charging system is by FAR the most important part of your system. Trust Me." muddy  |
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Gold Member Username: RvlacosDD 3512 , VR1000D 15= overcomp... Post Number: 1738 Registered: Sep-06 | where the fucked is muddy? |
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Silver Member Username: Trey4sportsPost Number: 464 Registered: Sep-06 | yeah im in 11th too. subs: PAP wmd's amp: massive audio P3000.1 amp 2: kicker KX350.2 speakers: ultra linear 5.25 comps wire: knukonceptz KLM 0 Ga alt; soon to be here 240 amp iraggi box: 9.0 cubic ft tuned to 37hz head unit: excelon X790 all in a 98 rover on boss 20's |
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Bronze Member Username: ReppinqcCharlotte, NC USA Post Number: 27 Registered: Jan-07 | damn we both rollin in the rova trucks... i got... Subs  2) 15" L7 Kickers Amp: 3200 Watt SPL Cap:2.5 Farad Cap (earthquake) Box: Dual ported ground shaker HU: Stock w/JL audio Cleansweep |
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Bronze Member Username: ReppinqcCharlotte, NC USA Post Number: 28 Registered: Jan-07 | damn we both rollin in the rova trucks... i got... Subs 2) 15" L7 Kickers Amp: 3200 Watt SPL Cap:2.5 Farad Cap (earthquake) Box: Dual ported ground shaker HU: Stock w/JL audio Cleansweep ALL IN A Black 2005 Custom Range Rover Luxury Edition |
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Silver Member Username: Trey4sportsPost Number: 465 Registered: Sep-06 | thats tiight dude, howbout them kickers tho? i would seriously look at sumthin with more SQ |
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Bronze Member Username: ReppinqcCharlotte, NC USA Post Number: 30 Registered: Jan-07 | oh yea definately...i didnt know what i was doing when i bought them...what would you suggest. Im trying to keep my mono D block 3200 watt amp and cap...but i will sell the box and subs if you can think of something good to upgrade to. |
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Silver Member Username: Trey4sportsPost Number: 466 Registered: Sep-06 | i would look into Fi Q's or Fi BTL's. and get your box custom built from either logan on this forum or mark potts from TCAB. your box is essential for getting loud and sounding good |
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Bronze Member Username: ReppinqcCharlotte, NC USA Post Number: 31 Registered: Jan-07 | yea either that or i was thinking about getting another 3200 watt amp and 2 12" solo X's since everyone on ecoustics seems to like em |
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Silver Member Username: Trey4sportsPost Number: 469 Registered: Sep-06 | are you going for straight SPL or SQL? ive listened to an 18" solo X and it gets very very loud but i would never use it for a daily driver it only sounds good for a couple of frequencys and gets really sloppy |
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Gold Member Username: JohnfiacIL Afghanistan,... Post Number: 1481 Registered: Mar-06 | sully when im done within the next few months my system should be 2 Earthquake PHD5000d's 2 DD9515F's in 12cu. tuned to 40hz 4 Kinetiks HC2400 batterys 300A H\O Alt. 2 Runs of 0 gauge from alt to rear. This box is my daily box once it does get built, but i am making a new box for comps later because this one isnt legal for them.. |
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Gold Member Username: JohnfiacIL Afghanistan,... Post Number: 1482 Registered: Mar-06 | and some line drivers or eq... i want 8V preout... HU is JVC KD-G820 |
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Bronze Member Username: ReppinqcCharlotte, NC USA Post Number: 32 Registered: Jan-07 | well damn then you should be in 150's def haha...thats one hell of a system |
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Silver Member Username: Trey4sportsPost Number: 470 Registered: Sep-06 | thats fucked up killa. that is one sweet system. two 9515's.....daaaamn bro. |
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Gold Member Username: WingmanaliveA pic is worth 1000 words Post Number: 3842 Registered: Jun-06 | Somebody should light a fire for Muddy. I hear he's doing what he needs to, and that it's taking up most of his time. He will be back. Who can pass up platinum??? Muuuuddy...Muuuuuddy....Muuuuddy.  |
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Gold Member Username: Nyyfan13Fi SSD USA Post Number: 3698 Registered: Jul-06 | the classic muddy pic:  ^^that picture is not intended for anyone |
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Gold Member Username: JohnfiacIL Afghanistan,... Post Number: 1483 Registered: Mar-06 | yupp im waiting for the subs to finish getting built\shipped so i can test out a sub at 3Krms before i buy the next amp.. I need about 2000$ more in equiptment still but i got the half of it... i have paid for 1 Phd500 2 DD9515's HU 2 Optimas for now.. red\yellow Need 4 Batts.. 1100-1200$ shipped 300A 375-400$ PHD5000D 500$ Cash in pocket... 700$ ....end of the month i should have like 1600$ on equiptment.. but i dont want to order it until i test the amp and make sure id have the room im thinking for the batterys..but i gotta order the 300A alt soon.. iraggi vs excessive anyone? iraggi would cost me less.. |
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Silver Member Username: Nd4spd18Post Number: 384 Registered: Jul-06 | Iraggi FTW. This has been covered before... |
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Silver Member Username: Trey4sportsPost Number: 471 Registered: Sep-06 | or powermaster, they make sum crazzzy sh!t. they make their alts all the way up to 18.5 volt...but itll costya bud. otherwise iraggi FTMFW |
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Platinum Member Username: Chaunb3400Huntsville, Alabama U.S. Post Number: 11519 Registered: Jul-05 | yawn... |
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Bronze Member Username: ReppinqcCharlotte, NC USA Post Number: 34 Registered: Jan-07 | ok i will look into Fi thanks for the help |
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Silver Member Username: Trey4sportsPost Number: 472 Registered: Sep-06 | another great company is digital designs...if money is no concern DD is the way to go... get a couple 9917z's...if you can find em or RE 2006 XXX's |
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Silver Member Username: Skibum12189Cleveland Post Number: 280 Registered: Mar-06 | hey sully randle...post pics of your system, your profile says 4 w7's in an 05 rover, i wanna see that. |
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Gold Member Username: Wolfman1966WEST MONROE , LOUISIANA USA Post Number: 1894 Registered: Jan-06 | Marshall/Canaan has one DD9515 and has hit 149.8db on it, now that should tell u something about his install |
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Silver Member Username: Nd4spd18Post Number: 405 Registered: Jul-06 | ^^^^^ That is an excellent example to use when talking to a noob who doesn't believe that a subwoofer system is 20% equipment 80% installation.... |
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Bronze Member Username: ReppinqcCharlotte, NC USA Post Number: 37 Registered: Jan-07 | ok for CAL PAYNE...i had 4 W7's and 2 15 L7's in my range but now i just got 2 15's L7's because i am trying to fix my setup...I will send pics As soon as i get em...until now i just got 2 15" L7's which arent that good. |
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Silver Member Username: Nd4spd18Post Number: 411 Registered: Jul-06 | WTF hold the phones.... please don't tell me you had 2 different types of subs in a car at the same time? And W7s with L7s? That's an insult to the W7s  |
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Gold Member Username: JohnfiacIL Afghanistan,... Post Number: 1485 Registered: Mar-06 | wow dont do that.... kicker is SPL W7 is SQ\SQL oritented.... alot of cancelation thier... just GIVE me ur W7's and get some BTLs or somthing lol.. but seriously mixing them isnt really good.. and that is a insult to the W7..your gunna get L7 cra@p on em lol |
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Bronze Member Username: ReppinqcCharlotte, NC USA Post Number: 38 Registered: Jan-07 | no no no...i had w7s in one car and L7s in another... |
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Silver Member Username: SpkrmanChi town, IL U S A Post Number: 175 Registered: Mar-06 | "Your charging system is by FAR the most important part of your system. Trust Me." More charging system means more *potential* for power. Power is not the only factor, nor is it the most important factor. The single biggest gain or loss you can get is the box. With a different box, you can just as easily see a 5-10db swing... no other single change will show that... short of going from inferior equipment to superior equipment. When it comes to absolute SPL you can do *too much* in your car... and your blocking the airflow up to the dash/kick/headrest etc. Some blocking is good, some is bad... depends on what your going for. That being said, the absolute loudest setup that was in the trunk of my monte carlo was a single type R 12, it did a 151.9 in the kick, and a 150.5 on the dash. The single 15 setup I have a vid of (not posted i dont think) doing a 150.5 in the kick, only did a 146.7 on the dash. No dual 12 or dual 15 setup ever broke a 50 in the kick, or the dash.. at least not out of the trunk. Dont confuse dash/kick with headrest though... and don't confuse any of the above with loud on music. SPL boxes are by design very peaky, isolating the 1 note that works best with the car/sub/box... and very peaky means you play one song and itsounds awesome, play another and it sounds like garbage. There are lots of ins and outs... but the number one thing in SPL, or getting loud period, remains the box. |
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Gold Member Username: BlainewPost Number: 2174 Registered: Nov-05 | is 150 dbs twice as loud as 140 dbs???}} |
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Silver Member Username: Nd4spd18Post Number: 432 Registered: Jul-06 | "no no no...i had w7s in one car and L7s in another..." Oh, ok. The way you wrote it, it sound like they were both in the same car. |
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Silver Member Username: SpkrmanChi town, IL U S A Post Number: 179 Registered: Mar-06 | "is 150 dbs twice as loud as 140 dbs??? in theory, yep... and 140 is twice as loud as 130. I'm not sure how "twice" is defined, but hey, whatever works. Typically... 3db is a little louder, 6db is definitely louder, 9db is ALOT louder... etc. once you get that loud its hard to hear whats goin on anyway, and you feel it more than you hear it, you hear pain lol. |
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Bronze Member Username: ReppinqcCharlotte, NC USA Post Number: 41 Registered: Jan-07 | wow that really helps me understand the whole dB thing...thanks for that. So then going from a ported groundshaker box to a well built custom box could add 5-10db to my 2 L7's |
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Silver Member Username: SpkrmanChi town, IL U S A Post Number: 183 Registered: Mar-06 | its feasable. no other single thing has the potential to make that difference... you can throw more power, but then you blow stuff up. |
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Bronze Member Username: ReppinqcCharlotte, NC USA Post Number: 42 Registered: Jan-07 | ok one more question. so if i sell my two L7's and box what would be a good upgrade that i could use my SPL 3200 Watt Mono Block amp to power? |
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Silver Member Username: Impala63ragDD 9512s , Orion d5000 Post Number: 578 Registered: Sep-06 | killa, I'm praying for 150 too. 2 x dd 9515 orion d5000 250 ho alternator 2400 kinetik |
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Silver Member Username: Nd4spd18Post Number: 435 Registered: Jul-06 | SPL is not a good brand. I would research that amp first and find out if it really does 3200 watts. And if it does, what kind of charging system do you have? |
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Bronze Member Username: ReppinqcCharlotte, NC USA Post Number: 43 Registered: Jan-07 | ok then i will get another amp if SPL isnt good..and im still confused...what exactly do you mean by charging system? |
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Silver Member Username: Nd4spd18Post Number: 437 Registered: Jul-06 | ^^^^ Alternator and wiring. Also batteries if you plan to play the system with the engine off (such as at comps.) You will never get more than about 1000 watts from any amp on a stock charging system. |
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Silver Member Username: Nd4spd18Post Number: 438 Registered: Jul-06 | If you're confused about how the charging system works, read these pages: http://www.wickedcases.com/caraudio/charging.html http://www.bcae1.com/charging.htm http://www.bcae1.com/chargin2.htm |
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Silver Member Username: Trey4sportsPost Number: 475 Registered: Sep-06 | good sites ^ , and SPL is from the same ppl who bring you power accoustik which is a very low end brand. i would doubt it does its full rms, i would say probably 70% of what it says if your lucky |
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Silver Member Username: Snarl2004Audioque 12 SD2.5s, Earthquake P... Post Number: 451 Registered: Dec-06 | how many db's do you think it would take so you could hear the bass from a block or 2 away and feel it if ur right next to the car? |
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Silver Member Username: Trey4sportsPost Number: 478 Registered: Sep-06 | thats very subjective as well, most ppl sound dampen their vehicle, essentially trapping the sound within their car so they post higher DB numbers at a comp. however, it probably wouldnt take a whole to be heard from a ways away. cheap SPL isnt hard to come by, get a couple L7's and youll figure that out quickly. but SQL and SQ is much more expensive |
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Silver Member Username: Snarl2004Audioque 12 SD2.5s, Earthquake P... Post Number: 453 Registered: Dec-06 | o. shoulda known i would get an answer like that. lol |
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Silver Member Username: Trey4sportsPost Number: 480 Registered: Sep-06 | no no its ok, i hate it when ppl flame ppl who are new to car audio. but i honestly think upper 130's with no dampening is pretty loud for the average joe in your neighborhood |
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Silver Member Username: Snarl2004Audioque 12 SD2.5s, Earthquake P... Post Number: 454 Registered: Dec-06 | im just trying to figure out how loud my setup will be once i instasll it. lol |
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Silver Member Username: BasssquaredPost Number: 195 Registered: Nov-06 | it all depends on the install thats one of the most important things ive learned on here |
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Silver Member Username: BasssquaredPost Number: 196 Registered: Nov-06 | bump |
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Bronze Member Username: ReppinqcCharlotte, NC USA Post Number: 44 Registered: Jan-07 | well i dont want be the average joe but i dont want to spend 5g on a new system either...so for about 2g more or less what would be the best complete setup for sql |
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Bronze Member Username: ReppinqcCharlotte, NC USA Post Number: 45 Registered: Jan-07 | ^^^^^^^^^^^^^^^^^^^^^ assuming i get a correct and good setup |
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Silver Member Username: Snarl2004Audioque 12 SD2.5s, Earthquake P... Post Number: 455 Registered: Dec-06 | ive spent about 900 for every audio thing in my truck: 2 12" SD2.5's Earthquake PH2000W/D1.1 Wiring kit Infinity component speakers Box JVC KD-G330 headunit all i need now is to upgrade the big 3 and a new alt. total should be more then like 1300 |
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Silver Member Username: Snarl2004Audioque 12 SD2.5s, Earthquake P... Post Number: 456 Registered: Dec-06 | didnt bump |
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Silver Member Username: Trey4sportsPost Number: 484 Registered: Sep-06 | alright here we go sully, amp kit: KLM 0 GA amp kit $70 extra wire: 10 ft KLM0 ga $20 (for the big 3) speakers: infinity reference (2) sets $200 mids/highs amp: KX350.2 $125 Alternator: iraggi $350 mids-highs wire: knukonceptz 8ga $50 HU: pioneer premier DEH-P7800MP $220 subs: 18" fully loaded BL $ 385 sub amp: hifonics BXi2006D $340 box: imortal box company, not positive on pricing but id say about $200 shipped (ported at 32 HZ) comes out to0 $1960 |
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Bronze Member Username: ReppinqcCharlotte, NC USA Post Number: 46 Registered: Jan-07 | well i spent about 1250 for my 2 15" L7 kickers...my (shitty)SPL 3200 watt amp. my ported groundshaker box, 2.5 farad earthquake cap, wiring, and cleansweep HU. But i wanna upgrade its loud but not loud enough, im sure that you all understand. |
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Silver Member Username: SpkrmanChi town, IL U S A Post Number: 188 Registered: Mar-06 | "You will never get more than about 1000 watts from any amp on a stock charging system" 1000 reliably, sure. but you can burp (spl) quite a bit more even on a dinky stock system. For example... sundown 1500 was tested in my yaris with the car off... and did 1100 watts at 2 ohms... without hitting protect on music and such. Lots of dim, the alt would eventually go if played hard, but the power is available. |
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Bronze Member Username: ReppinqcCharlotte, NC USA Post Number: 47 Registered: Jan-07 | Trey...how many dB you think that hit? yea i know it depends on the the setup and car and stuff but just give me a estimate. |
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Silver Member Username: Trey4sportsPost Number: 497 Registered: Sep-06 | the setup i listed? tell me what vehicle its going in, and if your going with an SQL box, SQ box or flat out SPL box |
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Bronze Member Username: ReppinqcCharlotte, NC USA Post Number: 48 Registered: Jan-07 | 2005 lincoln navigator and I have no idea what kinda box i want...i guess a sql |
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Silver Member Username: Trey4sportsPost Number: 501 Registered: Sep-06 | proper electrical system and a good box like TCAB could prolly get u in upper 140's |
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Gold Member Username: JohnfiacIL Afghanistan,... Post Number: 1506 Registered: Mar-06 | Impala what are your box specs? Im hoping for it in a daily setup, if not i am going to kill sombody.... lol j\p... i need to get a term lab tho... the store by me has the other type of meter and it wont work right... MY power acoustics said 149.6db on that meter... with MUSIC i didnt even bother with the test tones during it.. so i really wont know until i find a comp. and enter it when im done. |
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