General Audio

I've been trying to figure this out and figured I would put it out there for the gurus. Is there any real difference between speaker level and line level signals other than the voltage and the ability to drive a speaker level load (2-4 ohms vs 100ish or whatever for an amp). I guess what I'm really asking is this: Say we have a headunit that puts out 25 watts at 4 ohms. which by my calculation would be 10 volts. Now lets take that and plug it into an amp that can handle 10 volts (or split into two amps for 5 each). Is this fine to do or would it not work well?

Ok, within the next month or so I plan on getting a car stereo for my new car. I'm probably getting 4 alpine type component speakers, tweeters and cross overs with either a kenwood double din deck or a Power Acoustik touch screen deck to power the speakers. Now for the subs, right now Its between Fi and Dc, I'm leaning towards Fi but I'm just wondering what is the difference really between the Bl and the Dc?

Alright so i was down at the mall and took a look at the brand new 2012 Scion tc. I must say it looks beautiful, not too sure on how it performs or any issues that they have but it looked CLEAN. Im only 19 so its not like ill be able to afford one anytime soon, but it looks like such a nice car to wall . Kind of looks like a Honda CRX, but bigger and more luxury oriented. Guess i just had a bit of a daydream moment but maybe this will my my future car. Not sure yet, (Coming from a GM family, it seems odd to be this into an import.) Oh, and the doors already have 3 ways mounted in them.

Hello. I have two Sundown SA-12 d4 and a saz1500d v.3 and im having a little problem with what gauge wire i should be using. right now i would like to run it at 1ohm but im probably going with the 4ohm hook up. I still have my stock battery and alt and im not trying to run them down anytime soon. some people have also told me i can run them at 1ohm since i dont run my system all the time but im still a little sketchy saz1500dv.3- 1ohm =1500watt rms 4ohm=530watt rms

can any one help and give me the equations to calculate the box airspace and tuning on the box ... bcause i want to learn a very accurate way to design boxes like calculating them by pen and paper without using a software. PLEASE HELP

I'm hoping someone can point me in the right direction. Forgive me...I'm not very knowledgeable about this stuff. I have a 2001 Chevy S10 ZR2 (4X4) I ordered off Crutchfield and they sent me my new Sony Digital Media player and a wire adapter kit. The problem is it appears to be the wrong adapter. Crutchfield only has one option for my year and make and it's that one http://www.crutchfie...ss.html?tp=2977 My GM factory plug looks like this... Next part. I start to drive off without the original factory stereo plugged in and got about a mile down the road before it started dieing on me. I deduced that this truck must have some kind of security protection (I have no clue)…

Well, I usually stay away from all the local shops, there about 5. But I was bored so I went around yesterday to see whats new. Theres one shop thats actually pretty knowledgeable/cool. A old guy at Autosoundaddiction(VERN) We were sitting around talking, this kid comes in with a 15" Team RF fosgate(sweet SPL 4hp sub) the dustcap was loose, but he was sure it needed to be sent to the factory for "repairs" Tested the coils, their fine. Vern says " I have some CA glue in the back I'll just glue the dustcap back down and you'll be good, save you a couple hundred" The kids like no"I don't want it half assed, it needs all new parts." WOW I tried to tell him, that its jus…

Well I've been away from car audio atleast 2 to 3 years. Not sure what is new if anything. I've got a system right now. A single 10 inch re sx mated to a usamps md1d set to 1ohm so about 1000 watts. I'm actually looking to get rid of it and go more towards sq but know nothing towards that. What's a sq sub? Does it matter on amps? Box wise I know sealed box is best. I've seen these soundqubed and skar are they any good? Don't really have an idea on budget but as always cheaper is better and I'm looking to sell my system probably.

Do you have to charge the agm batteries or does it run off the alternator?

What are some general rules for box bracing i dont think i braced mine enough I have a 7.6 cube box with a fi btl and im just not sure

would it sound good to have 2 12" subs in a ported box and 1 10" in a sealed box. Would that sound good together.

So...any stories??? i've set my friends alarm off<----wasn't bein an ass, just messin around. we once threw a kid in my trunk and i played test tones for like 5 mins. @40/50 vol. (w/superbass on) he was all ^^thats the funniest thing i've ever done relating to car audio.....

I'm looking for the best way to make the audio inside quieter on the outside. if that makes sense... I want to isolate the sound so with the windows up you cant hear the music playing inside as easily. Right now im trying to focus on the midrange as that seems to be the "worst". I currently have the midrange in the stock location with damp covering 95% of both door panels. Right now im building door pods but the midrange is still going to be IB so that should help somewhat but not as well as a sealed pod. Do you think adding second skin overkill to the outer door panel would help at all? any other ideas?

i was at work last month and what did I find in a junk drawer? A brand new digital converter box. I asked my boss what was the story with it. He told me that he and a coworker had bought it cheap in 2009 to use with a tv in the pharmacy and that I could have it. Win. I'm putting the box in my center console and buy an antenna to mount either on the back deck or near the front glass by the front defroster. anybody used one of theses in a car or RV while moving? I hear reception is crystal when parked and choppy like satellite during a storm while in motion, Thoughts?

http://portland.craigslist.org/clk/cto/3154912993.html can't wait to see how loud this can get.

i don't know if this gets posted hear but hear it goes i have an L7S15 hooked up to Pyle / pla4478 that is hooked to a atoto/ SA102 deck the speakers are hooked from the doors to the deck not to the amp the problem that i am having is when i am playing music loud the doors speakers cut out but the bass dose not you can still hear the bass so i have to close the music app an reopen it do get audio to come back through the doors when its playing its playing it sounds good an plays great but all the sudden audio stops and bass keeps playing any help would be great i don't know if this helps but it happens through apple car play

This is just something i have been wondering since i found out how a ported box works. I know that IB separates the front wave from the back. And I know that a port acts somewhat like another speaker above and at tuning. But what if you were to build a ported box, and seal off the port from the front wave entirely. like, the woofers face forward, and the port faces the trunk but you seal off the baffle from the trunk entirely. I googled it, but came up with nothing.

So can i run a Kinetik battery in the back of my car wiht no other upgrade? I mean i dont need an isolator or anything like that? Back in the day i had a stinger gell in the front and one in the back and had to run an isolator and was a pain in the ass. any help would be aprreciated, i got a civic with a tiny ass alt and i have a cap but i heard they dont help any and was wondering about running one of these batts in the back, thanks civicman07

If using an outboard EQ and a seperate outboard crossover, which should come first in the signal path? The EQ or the X-over?

i have 97 gmc yukon and i was wondering if anyone know where to get a good high output alternator for under 300. i would like it to be 250 amps

Hi again today ! I just want to know why so much people here run there amp at 1 ohms. Isn't it to hard for the car electrical system ? I have heard it is better to play at 4 ohms than 2, and 2 ohms is better than 1. What do you think, because I would like to buy an amp for my next sub. I need to choose between the DVC 1 or DVC 2 on a SSA Icon 15, and only after that, I will be able to pick a Sundown amp. Do you guys know how to have a good deal on a package sub + amp ? (SSA Icon 15 + Sundow, or other). Thanks for your help

Anybody ever ordered anything from here before? Its a store on ebay. I'm about to order my Zx750.1 from here and I was hoping for a little feedback.

Well first sorry for making a somewhat new thread, I thought it wasnt reasonable to keep my questions going on the Fi Technical zone. Maybe I can get more help here I have a problem which Im trying to solve. Basically, Im trying to set my gains right, however, I dont have DMM or O-Scope so I have to do it by ear. Pioneer TS-W3002D4 @ 2ohms 1k RMS 12" Sundown 2000D @ 2ohms 1k RMS Rockford Fosgate 4-gauge kit Factory HU using RCA with Line Output Converter. Stock amp, no Big 3 No Bass Boost on Amp. No Bass Boost on Headunit. Everything Flat.

So i read that in can causes fires as to why you must use a fuse but will it do anything else? Such as fry other electrical componets in your car?

Just bought another truck to mess around with and looking into doing a blowthrough. I figured if I'm doing a blowthrough I wanted to do 4 15s. I'm gonna purchase a h/o alt of course. My first option is 4 sundown sa 15s running off of a crescendo bc3500d or a sundown saz 2500d. Looking to only spend about $800 on the amp. Would the crescendo out do the saz for the same dollar pretty much? 2nd option was to get a lil louder. 4 sundown zv4 15s running off of 2 crescendo bc3500d or 2 saz 2500d. Or would that not be enough power to call it good? Would the much higher power subs My question is with the power I'm thinking of giving the 2 options what would be more ideal. I wa…