Technical Info & How To's

Hey, I've got 2 1ohm dvc subs and just wanted to make sure I wire them up correctly. seeing as this is my first "real" system I don't want to hurt it so soon. the saz3000d connectors are in parallel inside the amp. so if I were to run my system like so, would this show the amp 1 ohm? Thanks in advance.

Hello, I have a little problem and don't know for sure how to solve it. I have two FI 15 inch subs and am running two 5200 watt amps. They are wired seperatly but are drawing power from the two 850 amp batteries originally in the van and two additional Kinetik 3800 batteries wired parallel. The problem is that I burned up a brand spanking new 250 Amp alternator from Excessive amps. I am new to this and don't know if trying to draw the 10400 watts from the batteries overworked the amp or what... Any idea what I have wrong that I need to fix?? Many thanks I appreciate it.

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.

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 …

I'm going to try to make this as simple as possible, there are only certain way woofers can be wired. You cannot wire them in anyway you choose to any ohm load you choose. There are rules to follow with Ohm's Law, which is why it's a Law and not a suggestion. I have seen it a few times in the last 2 days, where people say they will wire them in two different way with only one being possible, and it is very annoying, and no ones seems to want to point it out. So, I will try to make a simple list of basic woofer voice coil configurations and the only ohm loads you can wire them to. And for the noobs "Ω" is the symbol for Ohm Single Dual 4Ω woofer: Parallel 2Ω - Series 8Ω …

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.

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 just ordered 3 knu fleks 4g power wires for the big 3 upgrade, one thing, it doesn't say how long the wire is which is kind of annoying but anyway: My battery is a superstart 550, don't know if that means 550 amps or not but i doubt it. Alt is just stock, i drive an 01 sonata gls, so im guessing its probably like 90 amp alt. Im running 1/0 knu klm for power and grounds to my fi bl 15 (09 version) off of 1 ohm, and i doubt im getting near even 1000w, and prolyl mad voltage drop too. My question is, about how many amps will my electrical be putting out after the big three upgrade? Will it be enough to get 1000w+ out of my shit? Thanks.

Check it out.. we did a blog post on how to properly deaden the small cavity behind your dash speakers. http://www.floridacaraudio.com/dash-speake...closure-design/

i just got my pioneer back from repair, and on the RED wire for the power input there is a black barrel inside is a resistor... im guessing it it blow because i have power going into it.. but none coming out of it.... where can i get a replacement fast and what it is for? it is blue and it has color codes bans on it.... do you think radio shake has them!>

Ok here is what I was wondering if I get a 16v alternator an ran hc16v with the 12 an 16 volt terminal would I just connect the alt to the battery 16v side to charge. Then run my 12v electronics from the 12v post an the amp to the 16v. Just wondering if this is how it would work cause i'm considering this setup if it doesn't get to much more complicated. Thanks an sry if this all sounds to stupid or wrong.

I know a few people who ask me or ask others about this so I thought it would be worth posting up a link that lays them out in a simple fashion. Motor Designs Underhung and Overhung

So I ordered a new tool for the tool box, and received it in the mail today. And the tool of the day is: a Vellman HPS10SE O-scope Now how exactly do I go about using it? (altough it has an auto fucntion) I'm pretty much going to be using it to set gains at work and at home on my own projects. I have all the test tones one could need thanks to AutoSound 2000. Basically I need to know how I hook it up to the amp to measure the wave and what should I be using as a load? I've heard/seen of resistors (dummy loads) or reactive loads (speakers). I would assume that using the reactive loads would be better, but I have been known to be wrong before. There is a centre pin and wire…

i have a router but dont know how to make the circle cutouts and do curves on wood. can i get some help? thanx

I know how to get port area in square inches, but how do I find out the port length and tuned frequency? I need to know the math to aquire my goals. cant find anything on this specifically, only port area which i already know

well here it goes, im a programming student and bored as hell because the workload is so light right now. And basically i am making an all in one car audiuo calculator. Sofar i have a calculator that allows someone to punch in cone size, number of subs, and desired tuning frequency and the program will spit back all relevent information such as the length of the port needed for a transmission line box, the port area that will be needed, and an estimation, based on material thickness, a rough estimate of how big cubic foot wise the box will be. and from this i can minimize it back down into a cone area calculator, and a box size calculator. i was just looking for some sugg…

I drive a 200 Honda accord and was wondering if i need to do anything special to put the alt in. of course disconnect the battery + and - and let the car sit for a while. the alt is a 200 amp dom iraggi alt and it looks awesome. cant wait to get it installed tomorrow, props to dom, and i hope it is as great as he explained it to be. any tips or tricks to make the install any easier will be very much appreciated. i am mainly wondering if i will need to change anything computer wise to get voltage to where it is supposed to be, or will the computer detect this and regulate it automatically. thanks again. mike.

why cant i upload pics...it says that the physcial memory is exauhsted? any admins know whats wrong.

How-To

dispels some myths about speaker wire marketing hype. pretty interesting http://www.roger-russell.com/wire/wire.htm#oxygenfree

I found this very interesting and decided to post it here to save yall precious clicking time. I probably understood like 65% of the material, but get the basic idea. All of this info is taken from here : http://www.diymobileaudio.com/forum/showth...ht=coustic+xm-6 Mod edit: Thank you to MiniVanMan from DIYMA for putting this together. "There have been a lot of questions of late on the differences between active and passive crossovers. I'm sure with the influx of people on this board there's some confusion over what's what when crossovers are mentioned and how they're employed. So, while this is in no way a comprehensive tutorial on crossovers, it's a beginning. Especial…

So there isn't a topic on isobaric mounting, I figured I might as well create an advanced discussion on it to answer any questions. We might have an idea that isobaric mounting allows us to use smaller enclosures, but why? The important parameters are: Re Le Bl Mms Cms / Kms Rms Sd from these we can characterize a driver/system using Vas, Fs, various Q's and so forth. When we mount two woofers isobarically the Electrical parameters Re, Le, and Bl will change - but it's like wiring a dual coil driver, we dont really change much here. The Mechanical parameters Mms, Cms, Rms, and Vas will change while Fs and Sd will not change. Since Mms and Kms have both doubled, and ther…

Pretty surprising results, I would have bet my money on the Gorilla Glue and it got its ass kicked. http://www.audiojunkies.com/blog/346 I'm going to have to try out the Titebond III on my next box and see if I like it. * Sorry if this is in the wrong place, I figured it would be the most relevant here.

Copied mostly directly from Jl audio.

A lot of people still have turntables in their homes, or are contemplating buying one - but good information on how to set one up still can be difficult to find in this age of Ipods and shiny silver discs. Maybe you have a battered Technics or Dual that hasn't played records since Gorbachev was in office and your records look like they picked up a case of the plague; maybe you're thinking about purchasing a brand new SL-1200MK2 or Rega P1 to hear for yourself what these vinyl loonies are really yapping about. Regardless, anyone that's planning to add LP capability to their setup could use some hints about setting up and caring for the centerpiece of your analog rig. I'm g…