Technical Info & How To's

The Big 3 Are: 1. negative battery wire to ground - just replace the negative batt. terminal and wire and ground it to the factory location 2. engine block to ground - replace the ground wire from the engine block to the chasie with a bigger wire (maybe 4 guage) 3. alternator to batt - add a fused wire from the postive post on you alternator (the one comming from the battery) to the postive terminal on your battery. DO NOT exchange wires just add a extra one. make sure it fused the same size as your factory fuse. hope thats helps Note on #2- Some cars have a batt-engine block connection stead of chassis to engine block... -------------------------------------------------…

So im helping my buddy hook up his little system but ive come to a blank.. he wants an amp for his sub then an amp for his speakers. ive done this type of installation only once and i think i got lucky but ill get to the point, um how do you wire two amps in one car ? so to my knowledge, pos and neg from battery to distribution block, then two pos and neg to the two amps. right? for the headunit im also a little confused, both amps only have inputs so how do i split the rcas? im guessing some type of wire splitter for those and both amps have two inputs? and for the remote, do i use a distribution block for that or is it possible to put it in one amp and then to the o…

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!>

What is sensitivity? The sensitivity of a driver is typically defined as the sound pressure level of the loudspeaker given 1 watt of power input, measured at a distance of 1 meter, measured on-axis with the loudspeaker and measured in infinite space with the loudspeaker mounted to an infinite baffle. While the later part is typically assumed but not stated, the former part is the reason you generally see “1w/1m” or “2.83V/1m” stated along with the sensitivity specification. But wait, is 1w/1m equal to 2.83V/1m? The answer is only for an 8ohm impedance driver. We know this because of ohms law, where Power = Voltage^2/Resistance. If the load is anything other than 8ohm the…

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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…

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

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.

So here is a lil tutorial for all the people that are not into computers so much or just can't figure it out at the first time. 1. You upload the picture somewhere. If you have it already uploaded that's half of the work. 2. You copy that pictures link. 3. You paste that link between 4. Enjoy. Known sites to upload - ImageShack� - Online Media Hosting TinyPic - Free Image Hosting, Photo Sharing & Video Hosting IMAGE HOSTING - ImageHosting.gr Mobile Photobucket Here are pictures of the how-to: 1. First you go to your site for upload. I choose IS for typical ups. You click browse and a window shows up. From there you choose one or more pictures. For …

As those of you who know me know, I like to do a bit of research before spending any money. In the case of building up my shop supplies, I have diligently compiled a list of tools that will stay the course and provide you with years of service. I thought it might prove beneficial to some of you. Note, I haven

Well, as you can see by the title, I'm experiencing some significant voltage drop at my amp. It's an SAZ-1000d and my alternator is a 240a Iraggi. I have just one battery under the hood. It was sitting idle at about 13.3 at the battery and amp. Full tilt on music, it stays at 13.3 at the battery, maybe dropping .1v, but at the amp, it can drop down into the 11.5 range. The wiring for the amp is probably too small, it's a 4 gauge wiring kit I got pretty cheap on sonicelectronix.com, so I'm guessing that is probably my problem. The amp says it uses 4awg, but the 4awg I have might be on the small side, I'm not sure. What do you think?

Running 4 Fi audio ssd 18s at the moment and now I'm trying to decide and get ideas if possible to run 6 or 8 in my 99 tahoe. Any insight would be greatly appreciated. Thanks!

Hello to anyone that can help me. I have the above car and I'd like to upgrade to the Big 3 to help my power. I have searched all over the internet to find the answer for this but no avail. The problem lies in the fact that the alternator is quiet hidden on the underside of the engine and the battery is under the back seat. Can anyone help me with the easiest way to do the Big 3 on this Cadi? Thanks for any help!

Howdy everyone, I am looking to seal off the trunk of myv 06 impala. The box was facing towarda the rear (port/sub) facing towards the trunk hatch. But now were trying to flip it facing in. ATM I'm running 1 15inch fI bl by a 1000d sundown. I want to thrown another 1000 and strap it but from research I might have option other then Ronaldo get a btl. But for the moment, for now, I want to flip the box around. I could use some tips. Or a link robs tutoral, thanks

Do crossovers really making your bass louder? If so, any suggestions for a good one?

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

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 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

Hello I am having problems with the JBL GTO 1514D. I have made the enclosure to the jbl specifications. It is in a 3.45 cube box with a 4 inch PVC port that is 13 inches long. However I am getting a LOT of port noise, which makes the audio very dirty. I am using this subwoofer in a home audio application. When building the box i used liquid nails to seal the joints of mdf boards, and I also used 1 5/8 coarse thread drywall screws. After this was completed I coated the inside with fiberglass resin to fortify the interior. The sub is recessed and down firing with a back facing port the amplifier is also on the back. These cutouts have been sealed with silicone, as well as…

I want to thank Polecat for researching this for me even though he is very busy. I was curioius about the figures since they were not posted on their website. here is what he just emailed me with: KX 100.2 141 KX 150.2 370 KX 200.2 401 KX 250.2 225 KX 350.2 359 KX 450.2 245 KX 550.2 539 KX 850.2 303 KX 200.4 223 KX 350.4 148 KX 650.4 140 KX 550.3 132/ 97 KX 700.5 110/ 174 KX 400.1 105 KX 600.1 70 KX 1200.1 72 KX 2500.1 60 SX 400.2 210 SX 500.2 140 SX 600.2 158 SX 900.2 …

Tech Flex is something that I have always loved using in my installs. It not only helps to protect the wire I find that it has a number of other uses as follows: Color Code Wire Bundle Similar Wires Link the Wire to the theme of your iinstall Refresh otherwise "bad" looking wire In this thread I would like to share my process for covering a wire in techflex as well as some of the techniques I have learned for working with it. In this example I am going to be bundling two RCA cables together to make a 4 channel run that is tied together at one end and seperate at the other. It looks like this when complete: Lets begin: To start I prepare my wire and tech f…

Ok, so I'm very curious on learning about electronics, and repairing/diagnosing. First, I want to get opinions on where do I need to start. I've read a pretty good bit of info so far, but seem I've limited to what I can learn without doing it. As I'm a more hands on type, only way I can learn and understand is if I do it. And or if I'm confused about something, having somebody connect the dots I'm missing, then it clicks and I understand. So far I haven't found much on actually repairing car audio amps, most is just electronics in general. Which I guess is the same, just seems I get over my head easy because I don't know the basics yet. Basically I'm looking for pointers…

2005 4Runner, looking at having 2 locations to set the box, one behind the passenger seat, one in the cargo area. I'll run 2 sets of speaker wires to facilitate. I'm 99% decided on a RLi8 or Orphan8 and here's what I've come up with. The photos are of a Costco baby wipes box for visual reference 13.5x8.5x11. If made of 3/4" MDF, I get an internal volume of 798^inches or .46^ft. If the RLi8 is .08displacement, that gives me a .38^ft box... right? I was always shit for math, but am I missing something? If aiming for .4^ft like everybody says you should for these particular drivers in a sealed encosure, I can just make it an inch longer or maybe just some polyfill? Cu…

could one 270 amp alt. charge up my starting battery and 2 kinetik hc3800's or would i need 2 alt?

Stereo Interconnects (RCA's) RCA's were invented in 1972 by the famous audio engineer Richard Clark, as a stable replacement for previous connectors (hence RCA : an acronym for 'Richard Clark Audio', the company under which Richard Clark first released these connectors to the world). The point of the RCA interconnect was simple : to allow connections to be made simply and securely between amplifiers, CD players, tuners, speakers, power sockets, etc, without risk of electrical shorting or loose wires. RCA's quickly caught on, and are now the connector of choice for the pro audio industry, and hence the car audio industry as well. They are somewhat rarer in home audio circl…