People with Knowledge and noobs Plz come here & let me know wat you think.
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Gold Member Username: Extrmndor3IF U HEAR ME... crazydbs.com Post Number: 5168 Registered: Feb-06 | i wanted to do a full write up of all the things i know in car audio.. its not a big list since i dont know everything but hey at least i know something  well its been almost a month that i started doing this and umm i got some good info finished and i want you to see it.. plz dont start bein an @sshole if you have a problem with some i made pm or email me at extrmndor3@msn.com. thanks |
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Gold Member Username: Extrmndor3IF U HEAR ME... crazydbs.com Post Number: 5169 Registered: Feb-06 | Hi, before reading or taking any info from the write up I made, please include that im not responsible for any troubles or problems/mistakes you make. And if your sharing this info go right ahead and please include or give me props for this write up. Part 1 What's a good install???? when u say have a good install means having a good installed system.. and a system it doesn't mean sub +box + amp first its the signal(head unit) enclosure speaker(s) the car that is the system in and how the box its made its really important since the sub and box and car willa ct like a band pass box. and here is what the cabin gains comes in place amp(having a clean system) charging system(power) also good ground. no leaks in the box ( i should have this on enclosure but its mainly a tip). dampening material.(when needed) signal+charging+speaker+enclousure+car+amp=system screwing one of the elements can cause really catastrophic results on you sound. for example: if u have air leaks it will sound bad as hell. if u have bad charging system it will produce a clipped signal from the amp and will never push full power from the amp if u have a bad or weak signal the amp will never push the power it needs to push and will be weak to clipping if u make a box that its designed to other car it will generates cancellation causing poor performance and major spl loss.. there's a million things to check for a good install but experience its the best friend. |
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Gold Member Username: Extrmndor3IF U HEAR ME... crazydbs.com Post Number: 5170 Registered: Feb-06 | Part 2 Tips on building a enclosure. On building boxes there's a lot of controversies of tastes on enclosure so it got divided into two categories: spl and sq. Spl: means that it creates a lot of pressure from the driver making louder sounds. But sometimes it can cause peaks and unbalance of the driver causing the actual reproduction to disappear or change causing distortion. Sq: means sound quality and it mainly means that the the set up for sq will try to reproduce all the sounds the artist intended to be heard without any distortion added and great frequency extension and a flat response to avoid any peaks. Box tuning: on ported boxes u always have to using the tuning. The tuning is for tuning on what type of music do you want out of the driver. For spl applications its mainly higher tuning boxes ( 38hz and up) for sq is mainly for lower tuning boxes ( 28-38hz) If you really want to get the most out of sound u don't have to go lower than 28hz, going that low its worthless because : most songs don't go lower than 34hz and in a car 28hz its not used. On home theater is another story since sometimes u need to clearly reproduce a 15hz tone like a step of a dinosaur but in car audio going lower than 28 hz will never help but only hurts the output of the driver. Tips on spl sub boxes: Try to use an average of the recommended space obtained by your subwoofer manufactures . or try to use 10-20% less space depending on the cabin application, from there you will have to try to use the most area of port as possible. On spl box tuning its very confusing because the car is the place where the sound takes place, most cars tend to peak at around 50hz, some cars like the crx's tend to peak up to 60hz, some explorers tend to peak at lower frequencies around 45hz . Building a enclosure to get optimal results doesn't happen at the first try. U have to first take a look at the cabin or car that is going to. The cabin or the car is an acoustic chamber than when u place or drop your box there the car and sub will act like a band pass box since there's already one chamber ( the cabin of your car) and the last chamber will be your box Tips on Sq boxes: On sound quality applications your mainly goal is trying to achieve the maximum flat response and without any defects of the original recording or distortion. On Sq boxes you will have to use around 10- up to 45% more volume or space that your manufacturer recommends. Why??? A bigger box compared to a small box will tend to give you deeper bass or lower frequencies extension, and a bigger box tends to decrease most of the peaks gained in the cabin. You will have to tune at around 28-35 hz... keep in mind that some subwoofers are made to be more of a spl sub than a sq sub. In that case the optimal tuning is 35hz, going lower will never help the sub since the sub is not capable of handling that low frequencies and even at that low will reproduce unwanted peaks depending on the driver. Going lower than 28-24 hz in car audio like I said before will never help or give any results in fact will decrease your driver output and not helping to get an more frequencies extension.. To create good response and better air flow inside the box try to use aero ports( they add up to 3 dbs when used property when compared o regular ports) try and use the golden ratio. The golden ration is based on the Greek golden rectangle for the perfect rectangle. The golden ration is alil hard to use on car audio but if used its very helpful and is common used on home theaters. |
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Gold Member Username: Extrmndor3IF U HEAR ME... crazydbs.com Post Number: 5171 Registered: Feb-06 | Part 3 Tips of finding your special subwoofer taste: Not all the subs are the same if we took out loudness or spl. Some drivers are different that others. Some driver can reproduce a 16 hz note without any distortion some drivers cant do it. Spl: some specs and information you want to look for spl will be a stiff spider since is what helps the subwoofer move without bottoming out. A flexible surround, a low weight cone to increase efficiency, a big surface area to move some air. If your going with the big boys you will have to look for higher power handling, great cooling option if you are going into high powered systems and a high power coil and a anodized coil for better thermal management. And finally on a spl sub will always be less xmax compared to a sq sub a high efficiency ration ( or spl typically good efficient subs are up to 90 dbs at 1 watt/meter) and a lil bit high Fs rating above 35hz. Sq: some specs to help you find out a good sq woofer is mainly a stiff suspension, a low Fs rating, a high xmax ( is the one of the main things u can see a woofer going lower than the other since to make a tone one octave lower than a specified it needs up to 3 times more xmax to reproduce that tone) an oversized back plate so it can allow the woofer more excursion without bottoming out, a extended pole piece to extend the linear magnetic field for the woofer, Some specs or info can be shared for both applications and are really important like a rigid frame so it can avoid unwanted resonance noise that some cheap frame make, a food Bl rating for good linear and magnetic field. There's a t/s parameter that I been inspecting that most of the companies avoid it and is VERY important on getting the right enclosure and is called EBP or efficiency bandwidth product. And is a rating that helps a box builder determine if the driver is suited for ported, sealed or both applications, EBP less than 45 it should be used in sealed and between 45-65 it can be used in flexible applications, over 65 means the sub is mean to be in ported applications. There is always a way to find out about this.. and me Roberto Rosales A.K.A many names will tell you  ebp can be found like these EBP=Fs/Qes. Keep in mind that EBP is not 100% accurate but is very helpful that's why some companies avoid to use this parameter. Kingrob Zpeedy Roberto Rosales |
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Gold Member Username: Extrmndor3IF U HEAR ME... crazydbs.com Post Number: 5172 Registered: Feb-06 | plz let me know if i made a speelling error or someting. and i hope it helps alil |
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Silver Member Username: TatonkaPost Number: 371 Registered: Mar-07 | Very nice information for the new people to car audio. Must have took a while to think and type out. |
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Gold Member Username: Extrmndor3IF U HEAR ME... crazydbs.com Post Number: 5173 Registered: Feb-06 | yeah kinda i have full 12 chapters so far |
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Gold Member Username: Extrmndor3IF U HEAR ME... crazydbs.com Post Number: 5174 Registered: Feb-06 | f u c k it i wil throw some more chapters hahah Part 4 Building an enclosure and calculating volume: To begin with if your making your own box first u have to make sure all the walls are properly mounted rigid and invulnerable to flexing when is subject to high pressure. On I suggest using ¾ mdf fiber board or birch and of course internal bracing. The enclosure should be glued together and supported by screws or nails. Calculatting volume: when calculating volume is juzz measuring the dimensions of the box in inches or whatever do you use as yoru metric system. Box volume=(height)x(width)x(depth) and then divided by 1728. this will give you the volume of the box in cubic ft. If two facing sides are uneven length add them togheter and divide by 2 to take the average. Subwoofer cross over: There are two types of crossovers the passive and active. Passives are mainly coils and conductors between the speaker leads between the amp and speaker/ the active crossover is an electronic filter wich separates the audio signal to give to different amps. For better performance I use and recommend use a active 80-100hz low pass crossover with 12db/octave and depending on your set up crossed from 60-100 hz. Part 5 Problems/troubleshooting: If u or any of your friends are having trouble with your system, like distorted or loss performance or even lost sound after installing your system. You can do these steps I recommend for identifying your problem and even fix it. If you have any distorted sound or lost or u lose performance or rattling bad form your subs, u first have to check the connections running from your amp to your box and from your box to your sub. Then u will also want to make sure no wires are loose. If the first step did not solve the problem, check your enclosure for any leaks, crack or broken pieces, any lost of structural damage of the enclosure can cause very dramatic performance lost and distortion. If still doesn't work try to check your speakers for any burned leads, or separated components or even unsoldered terminals, u can smell something burning when a sub blows or is acting bad. But hey sometimes when u play your sub too much they will start to heat up and sometimes this is normal but also caused by clipping too. If none of the steps I told you to do you will want to start looking in other electrical components in the vehicle such as damaged alts, batteries power and ground wire, and any connections, and start by checking first your head unit or other processors u might be using. Some problems can even be cause by a special function of your head unit. Still doesn't work??? Try using a dmm and check the ohms of each coil.. and make sure it has good readings then keep checking your electrical stuff and test it one by one. If something wrong u might also want to contact your manufacturer. |
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Gold Member Username: Extrmndor3IF U HEAR ME... crazydbs.com Post Number: 5175 Registered: Feb-06 | again before reading or taking any info from the write up I made, please include that im not responsible for any troubles or problems/mistakes you make. And if your sharing this info go right ahead and please include or give me props for this write up. |
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Gold Member Username: SplmonsterC-Town, OH USA Post Number: 1166 Registered: May-06 | nice writeups lil rob glad to see u took the time to right this all down, and in good gramar haha jk man looks good keep going on it mayne |
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Silver Member Username: DenimWww.TeamSSAudio.com, MD Post Number: 300 Registered: Nov-06 | Nice work, now if this place had moderators, we could pin it to the top of the section for everyone to read. |
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Gold Member Username: Extrmndor3IF U HEAR ME... crazydbs.com Post Number: 5176 Registered: Feb-06 | yeah i kind of did the check of spelling and shyt... took about 1 week since ibeen alot busy but it was done in my free time so might post some more chapters later... |
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Gold Member Username: Logan__tilleTeam RevolutionImortal Box ... Post Number: 7774 Registered: Feb-06 | You had to copy paste that sh!t. |
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Gold Member Username: Extrmndor3IF U HEAR ME... crazydbs.com Post Number: 5177 Registered: Feb-06 | where i had to man??? u got any links form where i copied??? i did not do it man... theres are somethings that u cant even get on the internet like ebp this is like a personal info that i knew that i had to share i did not made more things because i dont know them i juzz wrote the things i know... if u dont like it logan dont read it... didnt u saw this logan??? plz dont start bein an @sshole if you have a problem with some i made pm or email me at extrmndor3@msn.com. |
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Gold Member Username: Extrmndor3IF U HEAR ME... crazydbs.com Post Number: 5178 Registered: Feb-06 | if u take alook on the info i gave you could see is the same info from other older posts that i maed and every post i made giving great info i save it and finnally i juzz make like a collage or a collection of info that i gave before... i juzz did whats a good system on some dude asking what a good system was is around 2 weeks old try to find there to see wat im talking about. some of my older posts have the other info as well... |
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Gold Member Username: Logan__tilleTeam RevolutionImortal Box ... Post Number: 7777 Registered: Feb-06 | Yea, its good sh!t . Just wish we had stickys.. |
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Gold Member Username: Extrmndor3IF U HEAR ME... crazydbs.com Post Number: 5180 Registered: Feb-06 | ahah yeah bro... i know wat you mean this forum sucks man but is cool... im used to it... i wish there was stickies and avatars and signatures too. |
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Silver Member Username: Phil_salisburyPost Number: 219 Registered: Sep-06 | MKR, Nice write up. Tell ya what, after your done and proofed it for correctness and if you want, I'll give it page on my site w/ all credits noted. |
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Gold Member Username: Extrmndor3IF U HEAR ME... crazydbs.com Post Number: 5182 Registered: Feb-06 | yeah no problem juzz make sure u give me props.. |
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Silver Member Username: Phil_salisburyPost Number: 220 Registered: Sep-06 | That why I said " All Credits Noted ". |
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Gold Member Username: Extrmndor3IF U HEAR ME... crazydbs.com Post Number: 5185 Registered: Feb-06 | yeah no problem dude |
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Silver Member Username: MesodummTri-City, Az Usa Post Number: 131 Registered: Apr-07 | Same here! I can post it on 3 of my 5 sites when it is done! Thanks |
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Gold Member Username: Extrmndor3IF U HEAR ME... crazydbs.com Post Number: 5186 Registered: Feb-06 | if you all are going to do so please provide me with some links on where this will be posted. thanks |
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Platinum Member Username: Rovin2 10 Pioneer... Post Number: 11614 Registered: Jul-05 | why not simply tell ppl to go read www.bcae1.com ........  } |
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Silver Member Username: BasssquaredKansas Post Number: 488 Registered: Nov-06 | because King Rob finally accomplished something worth while so lets give him some credit lol jk about the finally accomplishing something but seriouse about giving you credit nice job man good info |
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Gold Member Username: Extrmndor3IF U HEAR ME... crazydbs.com Post Number: 5230 Registered: Feb-06 | thanks dude |
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Gold Member Username: Tremor1127Team Fi Car Audio [:-] Post Number: 1663 Registered: Aug-06 | for people who think he copied and pasted from somewhere, i can almost guarantee the dude didnt... the reason i believe this is because i almost literally get a headache when i read stuff lil rob writes. im getting that same tingle in my head reading all of this... sorry man, but at least im helping you... "when u say have a good install means having a good installed system.. " sounds like something you would write. "the car that is the system in and how the box its made its really important since the sub and box and car willa ct like a band pass box. and here is what the cabin gains comes in place " its made its really its what the F$#^!!! thats a lil rob sentence if i ever DID see one... "Calculatting volume: when calculating volume is juzz measuring the dimensions of the box in inches or whatever do you use as yoru metric system. " or whatever... |
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Gold Member Username: Extrmndor3IF U HEAR ME... crazydbs.com Post Number: 5242 Registered: Feb-06 | fu c k i missed some words and sentences now back to the correction shyt.. remember english is my second language |
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Gold Member Username: Tremor1127Team Fi Car Audio [:-] Post Number: 1664 Registered: Aug-06 | wow, i figured you always used a spanish - english translator, i had no idea you spoke fluent english...  |
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Gold Member Username: Extrmndor3IF U HEAR ME... crazydbs.com Post Number: 5244 Registered: Feb-06 | na man i never use the a spanish to english. i ask my girl to correct me before i type something. |
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Silver Member Username: BasssquaredKansas Post Number: 529 Registered: Nov-06 | no medigas i would have never known |
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Gold Member Username: Extrmndor3IF U HEAR ME... crazydbs.com Post Number: 5279 Registered: Feb-06 | callate |
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Silver Member Username: BasssquaredKansas Post Number: 530 Registered: Nov-06 | Lol nunca paras de aser me reir Roberto lol Gracias |
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New member Username: DrummaIndianapolis, IN USA Post Number: 1 Registered: Jun-07 | Very informative! Even to people who aren't new, reading this gave me a new insight to car audio. |
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