what the hell is THIS!!an Autobahn 34" Subwoofer w/ dual 2ohm voice coils - 5000 watts RMS. and this fawka costs $6,000. How the Hell would this thing even Fit into a Car??. Lol, if anyone has ever heard one of these things in person, or even seen one tell me your experiences.

i know Wattage doesnt matter, but all of there subwoofers sure do have a high wattage. Are these subs good or what? Anyone have any of the autobahn Subs?
Here is the URL
http://www.thezeb.com/caraudio/audio...ubwoofers.html

 

i doubt theyre any good. their stuff is rated to take high wattage, but i wouldnt believe the numbers. they have proven that they care more about chrome than performance (sound familiar? ). anyway, i wouldnt worry about whether it performs that well, cuz i dont know of anyone that could get use out of it, other than wow factor.

eric

 

I had a pair of Audiobahn AW1200X subs and they were definately good subs. Great value I paid less than $100 each. At one time I was running one of them 4 ohm off my JBL 1200, so it was getting about 600-700 RMS. They sounded okay, and the hit extremly hard & loud. If you decide to get these make sure you port them, you'll be a lot happier. And I've actually heard of people giving these subs up to 1000 RMS last year when they were popular. I know they've replaced their line for this year, though, so I'm not sure what the new ones are like.

 

PPI used to have a 36" sub. I'd bet it goes pretty low, and deep, but i also bet its slow as hell. U'd never be able to use a sub like that in any real world non SPL compitition application.

 

Ive seen a 34 inch sub in an old vw beetle

 

It's a gimic, and its not the first...i think Clarion was the first to have a 32"er, and there is a 6 foot sub made too, it's all just to get attention.

 

Yea, I remember the clarion 32...

So slow that all it could probably be used for is to play a continuous note at 20Hz.

 

I would be that they don't even make that sub. It sounds so dumb and stupid that nobody would ever want to possibly order it. Knowing this they pretend they make such a beast and never getting any orders for it they can get away with it. Or, maybe I am just a freak. DOesn't matter much I guess.

 

sorry guys, but in order to hit lower notes, the sub must move FASTER. reason being, if you wanna go from 40 to 20 hz, then you gotta displace 2x the air in the same amount of time. so the sub has to move 2x as fast. i dont remember all the details, but this is what a speaker designer told me (this guy happens to have a doctorate in some form of engineering related to audio ). just because the size is large, doesnt mean that it will be slower.

eric

 

Acutally the cone will travel further on lower notes. That it why they can run out of travel at low frequencies.

Just because a cone is large does not mean it will be slow. It only means that it will take more force to move it.

Stereodude

 

Nismo - yeah, but isn't it 10,000,000x harder to make a 32" sub move as fast as a 12" sub, with factors such as distortion in mind?

I'm sure it might be *possible* to make a large, accurate sub. I mean, I've heard 15s (and I'm sure there's 18s) with sound quality comparable to most consumer-level 10" subs, and also have heard 10" subs perform SPL-wise just as well as most consumer-level 15" SPL subs. But in both cases they were pretty expensive equipment.

 

keep this in mind tho. all things equal (except cone area) a 15" will have LESS distortion at a given frequency than a 10", cuz it doesnt have to move as far. last time i checked, the cone area of 2 10's is fairly close to the cone area of 1 15".

as for how hard it is to make it move and sound good? i havent designed speakers before, but i wouldnt think so. all you got to do is build a motor, and then shoot for a suspension and surround that matches your needs, and then you weight the cone down until it matches your desired specs. and no more weight on a cone does not mean worse sq or transient response. transient response is based only on a formula that i cant remember offhand.

eric

 

This is a common misconception. There is nothing inherent to the design that makes a small sub sounds better than a large one. In fact they will be inferior because they can not go as low.

The mass/size of the cone is not really all that important to the sound quality. The linearity of the motor and the inductance of the motor are the main factors.

Stereodude

 

Well, some people would respond to that by saying that "they will be inferior because they can not go as low" does not match with "sounds better". Specifically, sq nuts...heh...one of my friends thats into audio (not deep into audio knowledge, but perhaps a shade past me) is a big SQ nut. He always gives me the lectures about how specifically SPL subs and/or larger subs that target more low, low-range are a waste, using the reasoning that the human ear can't really detect frequencies lower than...I forget the cutoff, but I'm sure you've heard the argument.

I think what I was trying to say earlier in the thread was, if it was possible that a 32" sub could achieve a high rate of sound quality, with sound-quality-range bass (but still with the ability to produce accurate SPL-range bass), it would take a much more intricate, developed design than what's found in most normal consumer-level products, and thus would be very expensive. Am I still out of my league? (I mean, if that wasn't true, every car stereo nut with money would be rolling in a huge SUV with a huge driver in the back).

 

Like I said, it's a common misconception. It is not true. Most people thinks that a large cone is slow inaccuarate. That is simply not true (if the motor is properly sized for the cone).

Once your cone starts to get as large as 18" (and especially bigger)the stiffness of the cone will become an issue. The cone will distort or deflect. This obviously causes problems. I would be careful if using an 18" cone for SQ, but 15" and less for SQ is fine.

Stereodude

 

i'd hate see how much the amp is to power that puppy... or worse yet, how large of a box you need for it

 

i saw that sub at an import show awhile ago. Wow is it big...wasn't hooked up though. it looked like a satelite dish

 

Search for info on audiobahn, me and others on here have posted a bunch of information about them before. It seems every week someone asks about it. Also, I've seen that big *** sub in a local car audio store for sale, so they definitley make it. Whoever said the human ear can't detect real loqw frequencies from subs is totally correct. My friends 2 Alpine Type R's and two MTX 500 RMS amps (forget the model numbers) is pretty crazy loud, and when he plays this bass CD it goes into notes so low I can't hear it anymore but the car is shaking like crazy and you can feel it in your chest.

PJ

 

I went to installer insititute in Long Beach ca...and theyre main office is about 20 minits away in Buena Park..and i saw and heard it inna van...just a single sub..now the van wasnt started or anything (alternator probs)..but was running on 2 fresh batteries..not sure of the amp or any details..but they made it pound..makes the whole garage kinda rumble

 

I like your car man. I dont like many 3rd gen's but I think urz is very tight. Good work.