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off the wall idea - maybe

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Old 09-25-2002, 02:26 PM
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off the wall idea - maybe

Have any of you ever given any thought to instead of a couple of honkin hyooge woofers, instead building a line-array setup with a bunch of cheap 6" woofers? I've been doing some reading about line arrays for home stereo use, and this one http://www.bottlehead.com/et/et.html Has some pretty good recommendations. It seems then, I could run the rear bass off of the rear speaker outs and not need an amp. Or I could be smokin something and crazy, the jury is still out on that one. Another idea, if I make custom kick panels, should the speakers there be in a sealed "box"? What about using sonotube with mdf end caps?

Dan
Old 09-25-2002, 03:07 PM
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unfortunatly i dont have time to really get into the detailes of answering your question, but in my idea i think your smoking something it might be stuff, pass it on,,, but its not the best of ideas.. i say stick with the dual 12s!
Old 09-25-2002, 03:52 PM
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Do whatever you want to do. But I can say that 4 jl audio 8" W0's in my friends pickup rocked!!!
Old 09-25-2002, 04:56 PM
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I'd recommend sticking with larger subs like 10's or 12's if you want alot of bass. I think that a bucnh of 6" speakers could possibly be louder than some 12's, but you would need alot. You can try it but I think 2-10's or 12's would probably be cheaper in the long run. Also I don't think you could run a whole bunch of 6's off the rear speakers, you would most definitly need a amp to power all of them. And for the question on kickpanels, it depends on the speaker, if it is a "freeair" speaker you won't need to build a box.
Old 09-25-2002, 10:56 PM
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Any 6" drivers that you cound find that are true subwoofers aren't gonna be cheap. Stick with something that is actually designed to be a subwoofer.
Old 09-25-2002, 11:17 PM
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I've come up with the idea.

My idea consisted of eight, 8", 8ohm subs mounted in a 4 ft³ box. It would mount to the rear deck behind the rear seats. Well that's were I would try it first to see how it sounded.

There's a few places, one's www.allelectronics.com and the other's www.partsexpress.com . They have subs for ~$12-20 ea. and actually have pretty good specs. I know they're no RF, Kicker, or Alpine subs, but I wouldn't want to spend that kinda money to find out it sounds like crap. It may be loud, but may still sound like crap.

If I do end up doing it, I'll post my progress, pics, and results.

Tom Cruise in Risky Business, "Sometimes ya just gotta say 'What the f*ck?' ."

Last edited by CamaroDriver; 09-25-2002 at 11:19 PM.
Old 09-25-2002, 11:34 PM
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partsexpress carries some very good quality drivers. that site comes up all the time with DIY home audio/theater guys, so you know there are some nice quality speakers for sale on there. not to mention they are pretty inexpensive too
Old 09-26-2002, 12:16 AM
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Yea. I've ordered stuff from then before, but no speakers. Mainly electronic parts. They're easy to work with.

I'm tempted to bite the bullet and buy these Goldwoods. They're ~$30 ea/ when you buy 4 or more. Granted that's $240, but I think I may be happier just for the simple fact that 1) They've got a rubber surrounds 2) A higher sensativity level. 91 dB m/w. That's pretty good for a 8" woofer.

They also have pretty good Thiele/Small parameters for the price. I've put them into WinISD and was pretty impressed with how smooth they appeared to be. Of course they peak at a higher freq. than my one 12" Pioneer does now, but that's with them in that 4 ft³sealed box. My Pioneer's ported.

If I increased the sealed box to 6 ft³ then I don't lose any SPL all the way down the graph below 50Hz, but gain ~5 dB above that. They would certainly be more punchy, but that's OK with the type of music I listen to.

But as we all know, "looks good on paper" don't mean crap in the real world. I'd have to HEAR them to know for sure. Who knows what the future brings.
Old 09-26-2002, 07:39 AM
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That was my idea as well, I was thinking 8 6"ers pointing toward the rear bumper sitting in a box above the gas tank. The only reason I suggested that it might be possible to run it without an amp is that the tube amps generally only put out 8-15w and the bottlehead guys also are selling tube amps, so I assume their speakers will work with their tube amps that generally only put out a few watts. So, highly efficient speakers wired in series? would keep the impedance down and not having done it, from the project page at stryke audio, theirs was pretty darned big, and from comments about the bottlehead, it seems as if many small speakers can put out loud low bass as well as 12" shivas. I was actually looking at some of the crap names at bsless like this one http://www.bsless.com/wh68.html But, several of the line array guys raved about radio shack 4" speakers and making good bass. Since I'm not into thump, I've just been playing with different ideas.

Dan's dementia
Old 09-26-2002, 12:45 PM
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The poly coned Audax 8" that Parts express sales can put out some good bass when ported....I have them from my main spkrs at home.
Old 09-26-2002, 05:02 PM
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OHMS LAW

Hate to burst into a coversation uninvited, but ohms law, especially when applicable to impedance of audio woofers of any kind says that when you wire a circuit, in this case a set of speakers in series, that the impedance raises. This is the reason we audiophiles wires Dual Voice Coils in parallel in order drop the ohmage from the typical 4 ohms per speaker to a non-typical 2 ohms per speaker. However if you do run a series setup, such as the one you speak of it should be a heck of alot easier on whatever amp you choose to power this mostrosity you intend to make. I actually think it should should good. If any of you guys can find the original manual for a rockford fosgate punch 45 amp, there is a diagram to run 22 speakers off of that amp.
Old 09-26-2002, 05:38 PM
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actually audiophiles go with higher ohm loads because amps have less distortion there....not saying distortion at 2ohm is audible but....oh well. :lala:
Old 09-26-2002, 07:59 PM
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TRUE

lol that is definitely true, but if I cant hear it then it dont exist.
Old 09-26-2002, 08:47 PM
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Re: TRUE

Originally posted by bunghole
lol that is definitely true, but if I cant hear it then it dont exist.
Pretty much, but don't tell that to the home audio freaks that put their speaker cables on isolating pedestals so that the EM wave reflection off the concrete doesn't distort the sound...

Where would we be if we didn't have so many gullible people to sell wire to for $10k a pop.. hehe
Old 09-26-2002, 11:16 PM
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Just to clarify.......

The speakers I'm planning on trying are 8 ohm speakers. Running 8 of them in a series/parallel configuration will produce 4 ohms at the amp.

The same can be done with four 4 ohm speakers. Simply run two of them in parallel with each other to produce a 2 ohm load, as well as the other two, then wire them in series after that to produce a 4 ohm load.

Here's a diagram of what I plan on doing, albeit metal instead of the typical wire.
Attached Thumbnails off the wall idea - maybe-eightsubs2.jpg  
Old 09-30-2002, 01:19 AM
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The amp running all of this: How many watts? I mean, pumping 64" of air has got to do something, but without the right power behind it, you'll sound like crap...
Old 09-30-2002, 08:52 AM
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Typically, the idea is that smaller woofers have a "tighter" bass sound, so this kind of setup would be good for some tight clean bass. But I don't see it producing the chassis-shaking bass of a Solobaric 15" . I say give it a shot if that's the sound you're going for. Just be careful not to make your system sound muddy.

I was going to do 4 or 6 10's in my truck I used to have but never did
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