bassl0va
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Posts posted by bassl0va
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You can't just double measurement unfortunately, you have to redesign the box.
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i run a PA sub in my car...
its an old school cerwin vega stroker 18 paper coned woofer
plays the lows pretty good did a 140 at 32 hz with it in a shit box..
Strokers aren't PA, they are just really old school, they are proven too, great subs.
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you said "no, dont do it"
all of car audio is a waste of time and money to someone. and yes i know what PA woofers are meant to play. im not stupid
i say try it. if all else fails the guy will have some nasty kick bass.
Thats just my opinion, he doesn't have to listen to me.
Yes, a lot of people think it's a waste of time and money, but I'm saying that compared to what he could do, I don't think it's worth it. 1 15" or even 1 12" designed for car audio and made by a proven brand would be a better choice IMO.
Define "nasty", do you mean nasty thats horrible, or nasty thats great?
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why cant he do it?
let him experiment. he might like it
I never said he can't.
I said that I think it's a waste of time and money. PA woofers cones aren't as strong as car woofers cones, they also don't play as low. PA woofers like kicks etc. and probably like 60-120hz the best, rather than <60hz like car woofers play. PA woofers are very different to car woofers.
He can try it, but I don't think it will turn out well.
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This guy has some really good methods to get super low tuning. And he has built boxes that play down to 15hz using cheap drivers:
http://www.subwoofer-builder.com/projects.htm
^some great ideas
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well heres vids of it in my room
It's pretty stink that you had your little kid in the room while you're blasting music.
Have you got any vids of the actual woofer? I'm guessing it's a PA woofer, meaning that if you put it in your car, you will need to put a whole lot of 6.5"s and tweeters in too, and face them out the back of the car.
In other words, no, don't do it.
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Well, whether it's 1,2,3 or 4 boxes, I think you should go and hit the guy that made it, because it does look rather dodgy inside.
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Yes they are rated at 500 watts RMS 1000 max. I have always been a believer in bigger is better when it comes to amps. Thats why they make the amps adjustable.
And yes they are P3D412.
Bigger is better within reason. You don't get a 2000 RMS 15" and put it on a stretsom 10k, the sub will die instantly. But having that 2000 RMS 15" on a 2.5k amp can be good because then you know you have a little extra power to make up for box rise etc.
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i seen a pic of one what had mtx 1,000,000 on the back of it and thought mtx made it but now that i seen this and it looks to be the same sub
i wanna hear this
i kno mythbusters did a shit job on that "sub" they built
first off, the movement wasnt liner like a normal sub is, it was all weeble wabble type shit
i mean come on, they could have worked more on it than they did and could have had something twice as cool
but i do admit that 156db @15htz is still sick tho
but with that area they could of done more subs, but for some reason, why the hell dont other people put subs like they had there faceing up and brace the shit out of the roof?
maby it would be louder to have subs faced up witout seats and what knot in a spl type vehicle?
anyways enough with the babble, i still think thats cool and what about that sony sub they made? it was like 40inch or something like that, i got a dvd with it in it, i unno if it works or not tho, its hanging from the celing
Where is this? Is it on youtube?
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I would prefer to use the USB line out, as this means no clipping from the ipod (unless clipping on the song), however ith a 3.5 jack into the headphones you may turn it up too loud on the ipod. Just a thought
My iPod touch was scoped, and at max volume playing 0db test tones, there was no clipping. This was without any eq activated, as long as you keep it off or set to flat, it should be fine, but thats only for iPod touches and iPhones.
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Didn't this turn a square bread van into a round bread van?
Does it still exist? Or has it been dismantled?
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I know this guy who uses cables with silver conductors, he says he can hear the difference, I call BS on that, but it's up to him. So, I say, use whatever you can afford.
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OHHH IN THE FACE
Thats what she said!
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Plenty of port area if they are flared aero ports.
25 square inches. Thats 6 square inches per cubic foot. The bottom limit for aeros is 8.
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I'm not sure there is sufficient port area here?
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I'm Looking into upgrading from 1 12" sub to 2 12" Fi SSD's. I'm still shopping around & looking for suggestions on amp & how I should set it up. I was wondering if I should run 2 - 800 Rms amps, 1 - 800 x 2 channel, or if 1 - 1600 x 1 channel is possible.
I was also wondering if someone could clear up what some of these abbreviations mean.
Fs: 30.1 Hz | 30.1 Hz
Re: 0.7 Ohms/coil | 1.4 Ohms/coil
Qms: 7.65 | 7.65
Qes: .37 | .37
Qts: .36 | .36
Mms: 248g | 248g
Cms: 0.11mm/N | 0.11mm/N
Sd: 480cm^2 | 480cm^2
Vas: 36.5 l | 36.5 l
Spl: 86.1dB 1W/1m | 86.1dB 1W/1m
Bl: 13.1 N/A | 18.7 N/A
Fs = resonant frequency of the speaker
Re = dc resistance of the coil
Qts = the total quality factor of the speaker at Fs
Vas = volume of air that offers the same degree of restoring force on the cone as that of the cone's suspension
Spl = sensitivity of the speaker at 1 watt RMS (different companies measure it at 0.5m) But the standard is 1 meter
Thats all I know
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He's going to "retune" your box? Enlighten me.
He's probably going to do something ghetto, but we'll see.
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loading is when there is pressure...btw port tuning is not the end factor of how subwoofers load, don't forget f3 of the box..i have a box at about 7.1 cu ft. with a dd 9518 in it tuned at 42hz and i play a song like i luv your girl for ex. at 31hz fine...lots of deciding factors if the sub will bottom out..hell sometimes subs can bottom out just by opening a window.
Doesn't that only happen in extreme cars and the few others that are loaded off the air in the car?
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i glanced over your avatar and thought it was some new different kind of sub with a hole in it, but then realized its just a smaller speaker. lol
lol, that would be cool if it was a sub with a hole in it!
But unfortunately it's just a 4" sitting on an 18"
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I'd do subs up, port back, like Steve. That configuration seems to work the best for a non-wall in SUVs.
If it's got 4 cubes per woofer and it's not tuned between 30ish and 35ish hz then ask him to change the tuning, but if they don't have 4 cubes each, your kinda screwed.
Check back here with the info he gives you though.
I'd get another one of the 5k Atomics, they are great amps, very worth keeping.
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If it's sealed off, you shouldn't need any deadener in the trunk.
BTW, removing the back seats is more fun
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Doesn't look like enough port area, also, whats it tuned to? Should be 32hz.
It has to be bad box design, because bigger boxes need less power because they are more efficient.
Also, it looks like a really bad place for the amp, especially if there is no cooling fans behind that panel.
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Ugh Seems like everthing I do my friend says no. He said 15 cubes is to big for two xl 15's on 6,000rms... So does some one want to make one for me lol...
The room I have is a couple posts up.
Just a quick idea
you probably want 4 cubes per woofer for 15"s
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0.75"mdf will fail, change it to 1.5", otherwise, it looks good.
can i
in General Audio - Can't find a category for your question? Ask here.
Posted
Nah, those are XLR or whatever, he just wants to put the sub and box in, no PA amps etc.