or atleast mine are. i have two 12" audiobahn dvc subs with 2" voice coils. the problem is the coils keep wearing out right where they attach to the speaker wire connector. i have fixed them 3 or 4 times now. all i can say is i wont be buying there junk anymore. gonna stick with good ole rockfords or pheonix golds, never had a problem with either of them.

 

Thats odd, Ive heard nothing but good things about Auidobahn subs, maybe you got a defect?

 

I had 2 audiobahns 10" ultraexcursions and blew them in 2 hrs. not very reliable.

 

**** u blew them in 2 hrs
what amp did u use
cause i wont it

 

blowing any sub in 2 hrs is most likely user error



the upper end of audiobahn subs have a good rep in the SPL arena for handling lots of power in the right box setup.

 

there good subs as far sound and they look sweet as hell but they have a really bad design flaw in the way they attach the voice coils.they should have kept the spot where the voice coil connects to the speaker wire alot lower and just put a 3" voice coil oninstead and i dont think it would have this problem. the one i have arent top end stuff though, they were $300 canadian for the pair. but compared to my rockfords that i payed $180 for they just arent the same quality.

 

Nope no user error here. they we're wired @ 1ohm each to a JBL1200.1 per sub. The amp was only turned up 1/2 way. they were in a ported box with about 3.5cu.ft. tuned to 35hz.
these subs just sucked.I replaced the with 2 adire brahmas and they handled the JBL 1200.1 with ease. Plus i had them professionally installed and I checked the wiring myself when they finished. So I dont believe it was user error just a pair of bad subs.

 

What's the output voltage of your head unit? Any active crossovers or line drivers? Also, your box is tuned to 35Hz and the 1200.1 doesn't feature a SS filter, playing any bass CD's in those 2 hours? Come on now. Don't lie! hehehehehe

Audiobahn isin't thought of as being high quality. Although, I've heard nothing but rave reviews about the flame line. Amps & Subs. ALTHOUGH, my buddy JUST installed an audiobahn component set. Rated something like 90WRMS I think?? He was giving them 45WRMS upclipped for about 4 or 5 days when........POOF........ the driver's side speaker not only blew but..........CAUGHT ON FIRE!!!! Smoke filled the car!!! Not cool at all. The fire went out by itself and there was minimal damage.... but damn that was close. The passenger side is still going strong though!

 

What does the output voltage of the deck have to do with this if the gains were adjusted properly?

This isn't the first time I've read about people blowing up Audiobahn subs. I've read of multiple people on carsound.com that talk about how they blow up real easily. Now, which line of subs are they speaking of I do not know, but overall this isn't the first time I've read of this.

 

the gains are the adjustment used to match the Line output voltage of your HU to the amp... if they are set wrong there can be LARGE issues...

 

I understand what gains are for. It seems there is a misunderstanding out there that if you push more voltage into the amp's input stages that you will get more power out of the amp which is not true. If the gains are too high it's understandable that it will push the amp into clipping earlier. Like I said before, what does the output voltage of the deck have to do with this if the gains were adjusted properly? Answer, nothing unless he's got like a 16V output head unit but even then he'd maybe have probleme with the Brahma's he's running then also. Now, the better question would be, were the gains adjusted properly? (get to this in the next paragraph)

This person said they were professinoally installed so taken even with a grain of salt I hope the gains were in the right ballpark. He is running Brahma's now and it sounds like they are taking what he can give them so it doesn't sound like the gains were turned way up and creating a bunch of clipping. Maybe those Brahma's can just take a beating better though I dunno.

(sorry, I got the original poster and the gabe poster confused but you guys get the idea)

Either way, power is one thing that can kill subs and from what I've read those audiobahn subs can't take the power to well. I've read people talking about how they can only take 1/4 to 1/2 their rated power and if you give them their rated power that the subs can blow right away. Again, don't know if those people were talking about a particual model that isn't good at taking the power or not.

 

I have no idea what he's using. Could be using a custom 100V line driver for all I knew.....

And how come some amps have a max 8V input?

 

Yeah he could be using a line driver but I doubt it. I mean, for regular every day use are people really that concerned with noise in the system that they would spend the extra money on a line driver? My answer to that would be probably no but maybe I'm off since I don't know what everybody is running. Overall I don't see line drivers used that much in general so that's where I'm pulling this info from. Most of the line level drivers I've heard about usually aren't pushing the signal into the 100V range though.

On the 8V Max input comment. My brother's Phoenix Gold amp gain range goes something like (don't quote me on this, going from memory) 2V when the gain is turned all the way down to 200 milivolts when the gain is turned all the way up as the imput needed to cause the output stage to clip. With that said, it shows you the range of what the gain has on that amp. (amp from the mid 90's, MPS series)

Now, the amp you speak of that has the max 8V input could mean two things. That could mean if you put any more than 8 volts into it that it will burn up some components in the input stage of the amp. It could also mean that is the amount of voltage needed to make the output stage of the amp clip when the gain is turned all the way down. Which one of the two it is I do not know but I'm assuming it's one of those things were you need to do a little research to figure out which is the correct answer.

 

Hehehehe Just kidding about the 100V line driver. Although that would be something to see! And I'd pay an extra $80 for a line driver if it reduced my system noise. Also, MANY active crossovers and EQ's have built-in line drivers.
Don't wanna misunderstand you here..... so you're saying if you input more then 2V on this particular amp, the output will start to clip? If so, that's exactly why I asked what I did!

 

Yeah, that's how it works from my understanding. Remember though, if you take 1Khz test tone recorded at 0 db and you get 4 volts out of your HU that if you then play music that you probably aren't going to get 4 volts out of your HU. Music is dynamic and it also can't be recorded at 0 db for it just wouldn't work.

Lets say the peak in the music on a CD is 10 db down from the 0 db recording level of that the test tone. That 4 volts out now becomes a lower number, it's late here so I don't wanna think too much into this so lets say the output of the HU is now 2 volts. (I'll come back later and correct that if my math is off) It won't be a steady and even 2 volts though but more so it will have a peak of 2 volts out for again, music is dyanmic in most cases.

With that Phoenix Gold amp and a true 4 volt out Alpine deck (tested with 4 volts of output) the gain barely needed to be turned up if at all and the only times it needed to be turned up a little was when there was a very low level in the recording. Like old CCR for example.

I'm assuming the level needed for the input voltage to make the amp clip when the gain is turned all the way down has changed to a higher number than that Phoenix Gold amp. I noticed on some Rockford amps I ran that with that same Alpine deck that I neede to turn the gains up and couldn't just leave them at the bottom position for the amp(s) just did't push a lot since the gains were adjusted too low.