Technical Info & How To's

Not that newbie’s are dumb. But there have been a lot of posts on here lately that if they read the pinned thread about them. It would make the post end a lot sooner or not even start Some of those threads are what is my tuning frequency? I like reading book and proving if they are wrong or right. So one I like is a book by old colony sound labs called loud speaker cook book. It’s a good book on the general subject of box tuning. And hay you may learn a thing or two about alignments. More then what a box calculator will teach you. Another subject is what components should I buy? I do not know because it is better to listen to them yourself. I for one prefer a…

I wana know if I can fix my jl w3 everything is fine with it. But the wire that comes of the cone and goes to the pos or neg I can't remember witch one I will have to look I can post a pic later to I'm just wondering if I can replace that or just buy a new sub

When u caculate how many cubic feet your box is do you count the port area?

This may sound a bit noobish, and it may be.. But I am trying to enter these boston acoustic 4.5" woofers into WinISD, and it keeps saying it fails in many different areas,so am I entering something wrong, or are these bogus specs on these woofers? These woofers do sound good for $15, but I think the specs listed may be wrong please help me? Here is a link Boston Acoustics 4 1/2" Woofers (pr) New Unused.. - eBay (item 360225641845 end time Feb-11-10 12:21:31 PST)

Not sure if this was posted yet, but I thought I might put together a little guide on how to determine where a song peaks. Go to http://audacity.sourceforge.net/ and download for your applicable OS. Install it and everything open it up... Drag and drop your song from Itunes, etc. You should end up with something like this.. Select a portion of the song you want to anylize or you can do CTRL+A to select the entire song. Go to Analyze then to plot spectrum, you may get an error "Too much audio was selected. Only the first XXX.X seconds of audio will be analyzed. That's fine just click, OK. This window will then pop up, on the lower left of your screen change t…

I am currently running 2ohm kicker cvr's on a zx750.1 amp i recently blew one of the subs. so i purchesed two kicker CVX's 12"s 2ohms I was wondering how i should wire these two to the amp I kow the amp is under rated for these subs but i plan to get a better amp later on. I would asume the kicker 750.1 amp be good enough I dont need to push the VCX's to the max Becuse they are right behind the seats in a single cab 09 F150.

Hello all, as the title says I have some USB problems. What I mean is I had put songs on 2 separate drives and only a small portion actually play through my HU. I tried searching through the drive from my HU and pick a song that wasn't playing and it won't play. But when I plug the USB into my computer or Xbox it shows and plays every single song. I have also tried putting songs on in sections and every single song works, but when I put all the sections together it doesn't play them all. My friends usb's play all the songs no problems. So maybe my computer is a POS and won't put them all on? Idk, does anyone have any tips or advice?

i found this, so im passing it on..... Car Batteries What you need to know about your vehicle's battery. Most of us don't think much about the battery in our vehicle; we simply turn the key and expect the engine to start. We expect the battery to be reliable, long-lasting and maintenance-free. Once it fails, however, odds are you'll have to replace it, and knowing which type and size battery you need is important. Will it be conventional, maintenance-free or recombination? Conventional Batteries A 12-volt automotive battery has six compartments or cells. Each cell has a series of alternating positive and negative plates separated by isolators. All negative plates in th…

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i need some advice on how to build a buss bar for my setup. my batteries are side by side and that is the only way i can mount them. i need the bars to stay as close to the batteries as possible (cant go by box). my battery rack is adjustable so normally they sit below the back seats and for shows i can raise them up.

This is an older article, and I know a few here have read it, but I thought I would repost it for others. Source: http://www.hometheaterhifi.com/volume_9_4/feature-article-active-speakers-12-2002.html The Benefits of an Active Speaker Lifestyle December , 2002 Colin Miller Introduction This article compares passive loudspeaker systems which use a single power amplifier to drive an entire loudspeaker array through passive crossover components (capacitors, inductors, and resistors mostly) between the amplifier and actual drivers, and active loudspeaker systems, where the crossover components are placed between the preamplifier (processor) and power amplifiers, so …

Since the website changed I am not able to add the Manditory pic from Photobuck. I am able to add pics through out the post using the "IMG" way. Is there any way to use this method in the Mandatory pic?

copied from the Basic Car audio web site and from FXN A power amplifier takes an input signal, usually a preamp level signal, which has both low current and low voltage characteristics, and produces an output which will have higher current and voltage levels. The power supply available to the audio output IC in a head unit is limited to the battery voltage of the vehicle. This means that the head unit can produce an audio signal with a limited (by the battery voltage) voltage swing, and therefore a limited power output to the speaker. Most amplifiers have a special circuit (switching power supply) to boost the available battery/charging system voltage to a higher voltage…

I'm getting some measurments together to do a ported box for 4-SA-8's in a 4cu net ported enclosure. Using 2 of the 4" precision ports I would need each to be 11.90" to achieve my desired tuning of 35hz. I have no clue how to figure the displacement of the ports at their desired length. If someone could give me the formula or better yet just figure it out for me that would be outstanding . I have plenty of time since the subs won't be out till feb.

So just recently my subwoofer and Amplifier started cutting out. What I mean is the speaker will play for a few seconds at the normal loud volume I play it at regularly then the sub starts making a weird noise, the amp light dims, and the speaker basically just stops playing. Any ideas what it could be? Maybe a short behind the speaker wiring? Just wanted to see If I could make this troubleshooting faster cause it's a pain getting that speaker out behind the seats of my single cab truck. I have a Sundown SA-10 wired @ 2 ohms Diablo Audio Technology 1000.1 About 1.25 Cu. Ft. Box tuned to 34 hz

Copied mostly directly from Jl audio.

Hey, I am thinking of building my 1st sealed sub enclosure for two 8" Orphans from Sound Splinter. I am planning to put it in the trunk of my car (Focus zx3). The trunk measures ~ 41 wide and 30" deep. I believe a single orphan needs 0.186 cu ft (0.178cuft + .08cu ft displacement of the sub) so im assuming (correct me if im wrong) two orphans would need 2x as much, .372cu ft. What I know for certain is that the box needs to be at least 6" deep and be able to fit 2 amps on top (1 mono channel for the orphans and one amp for the speakers). And I would like to be able to easily remove the enclosure when i need a bit of extra space in my trunk, so would something lik…

Alarm Install Primer: http://www.subwoofertools.com/downloads/al...hsPrepDocV1.pdf Free Ported Subwoofer Plans: http://www.subwoofertools.com/forum/ported-box.asp Custom Enclosure Design: http://www.subwoofertools.com/boxprogram.asp 1/3 Octave Test Tones (wav format): http://www.subwoofertools.com/downloads/tones/default.asp Subwoofer Wiring Guide: http://www.cardomain.com/shop/wooferwizard...dance_of_subs=4 ohms Mastersheet (2005 Ford Mustang) http://akamaipix.crutchfield.com/graphics/...ple_0190011.pdf Updated: 05/17/2006

I am looking at getting theHertz HSK 165.4 speakers for a daily street beater / comp car and would like to do all the wiring myself. Does anybody have any experience or knowledge with wiring a 2002 VW Passat without the monsoon system? Like where are the voids at? where can I run wiring? I have never done any of this stuff so any help is appreciated! Pretty much at this time the questions I can think of are the ones stated above and: How do I wire my speakers. do I go from the speaker to the crossover to the amp? or speaker to the crossover to the deck? then the amp? What kind of wiring should I be using? Should I use some normal speaker wire? or should i beef it up? I…

I've never built a box before and i dnt want to pay close to $400 to have one made I've got a Chevy blazer 4 door and i just bought two SoundQuebd hds3 12's and I'm needing help to get the perfect 5.2 net cubic ft box built I'm going for the low low bass so tuned to 32-30hz and want subs to face the roof and port facing the back hatch door needing help with blueprints or step by step cuts and where the pieces go. can anyone please help me? Im powering them with a 1200.1 super d class mono Zeus amp with the big three upgrade and 0 gauge wires ran

So it seems like people don't know how to post pictures on here.. So here is a little tutorial. First, go to www.imgur.com Click the Cloud arrow at the very top left hand corner. Then click the "upload" button and an image from your computer. You can upload multiple images at one time. Wait for the image to finish uploading, then select the IMG extension and post into the thread, enjoy.

Amplifier bridging is simply using 2 driven output channels to drive a common load. For 2 channel amplifiers, one left signal and one right signal is used to drive a mono speaker load. Keep in mind that mono and bridging are not necessarily the same. Mono means that there's only one output signal. There could be more than one speaker but each speaker will have the same output. Bridging means that you are using more than one source of power to drive a load (speaker). The sources of power are one each output from either channel of the amplifier. A long time ago, amplifiers had signal on the positive output speaker terminals only. To bridge one of those amplifiers, you'd hav…

Hey Guys, I am new to this forum and throught I would try to contribute. If anyone is looking for reapir manuals, owner manuals or service manuals for virtually any type of car, there is a FREE ebook at the address below. I asked him could I download and share it, but he said he prefers to have people come to the website. The site itself isn't the best, Sometimes there are annoying ads and surveys. The ebook is only a couple of pages, but it gives a list of places online where you can find almost any service and repair manuals, even for very old models and trucks. I would highly recommend to download it and keep it on your computer. Website - 1000’s of Free Car Van a…

This is a good read!! Dampening Factor Write up

Hi Guys, Hope you are all well and i aslo hope that some one can assist me with working out the correct spec for a true SPL box. please note I will only be doing SPL with this box. Ok so I have 18mm ply wood, 1 12inch subwoofer, 1 amplifier and 1 battery. Here's what i'd like to do Get a minimum of 151db's from this setup Equipment DD Z1a NSB 170 12v Targa TG301-DW The sub specs are as follows and i could be wrong because this is taken directly from the site. 12" COMP SUBWOOFER - DUAL 1 SPECIFICATIONS Fs (free air resonance): 48.7 Hz SPL (efficiency, 1W/1M): 89 dB Nominal Inpedance: 1/2 Ω Qts (total speaker…