Technical Info & How To's

Ok so this is the first time I'm amping some mids/highs in my car using a 4 channel amplifier. I have 2 infinity reference 6x9s by an SSL F400. I bought one of those cheap amp hookup kits from walmart just to fill in the gap for wiring I didnt have. (8gauge power and rcas) I got really bad engine noise at first through the 6x9s. I troubleshoot and made a new ground for the headunit to the chastity of the car, also made a new ground for the amp to go to the same ground my battery in the trunk is grounded to. (strut ground) the engine noise was reduced but is still present. everything sounds good, but there is still some audible distortion. I have a pair of stinger bass blo…

Hello Community , I purchased a supposedly new sub today on Craigslist , turns out it is blown. So I’m left with one heck of a lesson and a hefty paperweight. I would like to salvage this speaker if possible but I cannot find a voice coil anywhere online. Im hoping that in all of your grand knowledge and experience you might be able to point me in the right direction , thank you for your time. Vik R

Im sure most of you know the trunks in these cars are terrible for bass. Looking for some ideas on what i can do. I have sound deadener on the trunk lid an sides and a little bit behind the back seat. I don't wanna cut out the top of the back deck supposedly doesn't gain much. was wondering if cutting the metal out behind the back seat helps at all? BTW im running 2 xcon 15s with a crescendo 3500

Good Amp read Switching Amplifiers: The Technology and the Issues

Hello, I would need some help on wiring two amps. I have Sundown 50.4 for fronts and backs, and will order Sundown 125.2 for 2 8'' subs in the back. I need wiring info on which things to buy to wire those two amps. I was looking at knukoncepts and wasn't sure which items to grab to have complete parts. This kit seems good for the 50.4 and I should have enough power wire to run it to the amps 4 Gauge Amplifier Installation Kit and then I got info that I should run distribution block to split the power wire between the two amps ? If so which distribution wire would be a good one ? I don't think I would need another amp kit but just additional rca's, another ground wire, c…

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.

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Don't really see a security section, but I just had a quick question regarding Directed units that feaure the dual stage impact sensor that is an internal part of the main unit. I used to mount external impact sensors to the steering column shaft. I always seemed to have good results with the sensitivity there. Anyway, the new units that are all integeral, state in the install manual "since the shock sensor does not work well when mounted firmly to metal, we recommend against screwing down the control module" So how and where is the best place to mount to control module? I just installed one top of the line 2 way unit earlier with zip ties to part of the metal dash brac…

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'm putting the order into Soundqubed in about a week for a 3500. I want to do everything I can to keep it in good condition. I have seen people mount amps using rubber bushings,washers and spacers. and I have seen plenty of "straight to wood,seatback" amp mounting. I definitely want to put it on bushings of some sort or build an amp rack, maybe a combination of the two. I was also wondering about separating the amps mounting postion from the subs,box and trunk area to try and reduce hard vibrations as much as I can. Is this necessary? How do I mount the amp with rubber "feet" so to speak? and where do I get them? Should i separate the subs from the amp? Just for…

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…

hey guys i have 2 hifonics xxv colossus amps an i have been told, i could link them with this MLX-100? if so how would i go about doing that? my amps dont have a master/slave switch.

Hi all A big request to those who have the Clarion HX-D1 in free access: take a picture, please, if there is a possibility of the internal structure of the head and its front panel on the inside. And if anyone has a removed front panel board, and it is possible to make a photo of it from two sides, it will be great at all !!! Thanks for attention!)

This is what i have so far, more to come. * Exterior Washing o Introduction o Bucket Prep o Washing the Car * Wheels & Trim o Cleaning tires and wheels o Rinsing the tires o Tires and Trim o Washing Wheels on SUV * Advanced Detailing o Cleaning Motor o Undercarriage Spray 1 o Undercarriage Spray 2 o Hard to Reach Areas o Detailing the SUV Engine * Drying o Drying the Car o Drying the Car with Compressed Air * Glass & Interior o Detailing Interior o Glass Cleaning o Cleaning Leathe…

First off, where to buy lead wires, from terminal to coil, and second, what to seal it to the cone with. And oh yeah, how much slack should I leave? I was going to try to match the working leads.

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…

i have 2 18'' AQ HDC3 in a that is 11.5 cubic feet. i would like you make a round tube port for it tuned to 47hertz for spl and another one at 32 hertz for daily. i need help with figuring put how many round ports i need and how long they need to be. i would prefer to do 4'' round ports but will go to 6'' ports if needed.

http://www.mobileaudio.com/rac-faq/

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/

Hey guys I have never installed HIDs before and I was hoping someone here could help me. I looked up what kind a 94 toyota 4runner needs and they say Its 9004 so I ordered a hi/low kit from ddm tuning. I figured out most of the shit of the install pretty Simple theres just one plug I can't seem to find a place for. I am guessing it's what tells the lights to go on and off from the switch. Here's a pic of the plug in the instructions that don't come with it that you have to go to their website for say it should just be hanging loose somewhere, but i can't seem to find it. Link to download instructuons Where would I find this? Is this even the right plug for it? Any help …

Hi guys I was wondering whether standard polyurethane or a UV activated resin would be better for applying directly to MDF wood in order to protect it from the elements of rain ice and snow basically is one product more durable or reliable than another with respect to weather-proofing wood thanks

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

How do I mobile phone post pics to the forum?

hey guys does anybody know how you would wire this qvc beast? I know you would take a pair of the voice coils and wire them to an amp. So im guessing you would do the same to the other side. Heres my question, when wiring separate sides of the speaker to its amp would you wire as you normaly do or is there a special way? IM goin to put one amp per pair of coils, i just want to make sure i get 1ohm power from each. so would i just wire each side to 1ohm or is there a special way with a qvc sub?

i have 2 kinetik 1800's and im going to put them in the back of my trunk in parallel. im getting rid of my stock battery. this is how i would wire it: i have 2 awg wire to connect the alternator to the battery. the wire will go from the alternator to battery A's positive terminal. Battery A's positive terminal will be connected to battery B's positive terminal. the stock terminal (from stock battery) will be connected to a wire that will be run to the trunk go to battery B's positive terminal. the stock terminal has 2 wires connected to it, one goes to the fuse box and the other goes behind the engine and i cant see where it goes to. my guess is that it goes to the starte…