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post #61 of 615 Old 03-16-2010, 02:00 AM - Thread Starter
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Originally Posted by LTD02 View Post

i almost pissed myself laughing so hard at the enormity of that enclosure.

have you considered that after fully bracing them, you may not be able to move them? with drivers, i'd think you'd be looking at 600-700lbs+ per box. lolol... or, that if you don't fully brace them, that they are going to blow apart at the seams? are you planning to use stuffing in order to get extra effective volume...j/k. ;-)

i love crazy builds and yours certainly falls in that category. i dig that your lady is into them too (literally, haha)...that's really cool.

i'll be following along with interest!

hah funny funny I'm thinking about pillows for damping tho seriousely, because already there's some resonance isses from knocking and pounding on it. Maybe that wil bring it down from 6.5Hz to 6 hehe
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post #62 of 615 Old 03-16-2010, 02:00 AM - Thread Starter
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it does great with lows, just not highs. Popped in Star Trek... that volum.. gain knob went way down. I expected the same for music but I'll get it figured out. I got this dual 2 sub to play with till the dual 4s get here.

I said I had turbulence with 100 watts. But this is ridiculous.

http://www.youtube.com/watch?v=_bH-vBmcvJc

fan noise at the end too

http://www.youtube.com/watch?v=jAJuDR_q48Y

http://www.youtube.com/watch?v=KAgoszeswKg
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post #63 of 615 Old 03-16-2010, 03:23 AM - Thread Starter
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here's another clipping vid.. gain starts off at 26.. yet on star trek, the sub bottoms at 14. I guess LFE with DVD/Blu-Rey is much much hotter. I've spent the night watching and adjusting with remotes in hand. During movies the sub can be inactive for so long, so weak most of the time, then.... ya. So for movies the amp is overkill as expected... even with the gain way down it over drives the sub. But then with music it can't really push it.

YouTube - CIMG0252.AVI
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post #64 of 615 Old 03-16-2010, 08:41 PM - Thread Starter
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OK Ricci, I get it now.. increased airspace increases low end output...not high end...on a sloping scale. So building super large requiring less power overall decreses high bass

output. So what if a gentle slope of 1dB/oct HP was used up high say around 30Hz to allow more power applied?

So we all knew it was a matter of time..just didnt expect an hour. The amp clipped bad, probably due to bad house electrical, on music. I had to set the gain to 26 for decent

output for music any more and it clipped. But on movies even way down at 14 it bottomed the sub hard. So ya. I did it. I broke it already. alright? So anyway...tried to kill it

by blasting it at tuning... forgot I retuned to 11Hz so the 1st attempts were at 17Hz then last at 11Hz.



http://www.youtube.com/watch?v=mYnHD9N3LlI

http://www.youtube.com/watch?v=Q3Z3-hR4c70
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post #65 of 615 Old 03-17-2010, 12:19 AM
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i don't think that you understand where ricci was coming from/what he was saying...but i won't get in the middle of this one...

Listen. It's All Good.
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post #66 of 615 Old 03-17-2010, 08:17 AM - Thread Starter
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Quote:
Originally Posted by LTD02 View Post

i don't think that you understand where ricci was coming from/what he was saying...but i won't get in the middle of this one...

it's not an argument or debate, I'm here to learn my friend. please share!
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post #67 of 615 Old 03-17-2010, 09:54 AM
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it's not an argument or debate, I'm here to learn my friend. please share!

I'm not going to speak for anyone else but I really want to know how you benefit from having such a large enclosure. I've played with some Unibox models of other large subs and there is little difference from a ~25-30cuft box and a >100cuft box. Maybe a few dB at the most (3-4dB) and only right at the tune. I know I am one to talk having such large subs but they aren't the size a small car like yours. Just seems impractical and for what benefit. The efficiency down low will be great but it would be just as good with a more managable enclosure. Just my humble opinion. I like crazy projects too but I also want to help you get good performance with less headaches.

My Dual 18" LLT subs 120dB down to 10hz

 

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post #68 of 615 Old 03-17-2010, 02:24 PM - Thread Starter
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Maybe a few dB at the most (3-4dB) and only right at the tune.

that is a doubling. that is going from 1 sub to 2 subs. or that is doubling power. and right at tune not everywhere else..that is my goal... I don't want 20Hz on up as much as I have 20Hz on down, my goal is not a flat responce but a HUGE peak in the infrasonics otherwise the $500 I spent on wood would have gone to 3X the number of subs (as I have 2 EP4000's..plenty to run 3X the drivers) in IB
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post #69 of 615 Old 03-17-2010, 02:30 PM
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how will the internal bracing be laid out,,?? would think those large walls will vibrate easy with that thin of material,,

interested in seeing how the build progresses,,

Derry

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post #70 of 615 Old 03-17-2010, 09:24 PM - Thread Starter
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actually, I expect to get a lot of heat for this, but I picked up some 2x4's and I only plan on putting 1 from face to face and one from side to side in the centers
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post #71 of 615 Old 03-17-2010, 10:07 PM
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Quote:
Originally Posted by kryptonitewhite View Post

that is a doubling. that is going from 1 sub to 2 subs. or that is doubling power. and right at tune not everywhere else..that is my goal... I don't want 20Hz on up as much as I have 20Hz on down, my goal is not a flat responce but a HUGE peak in the infrasonics otherwise the $500 I spent on wood would have gone to 3X the number of subs (as I have 2 EP4000's..plenty to run 3X the drivers) in IB

I admire your persistence but what you aren't seeing is that the extra dB's isn't covering the entirety of the 'infrasonics', just a very narrow range of them. We're talking a range of about 2-3 cycles here. So narrow you will more than likely not even notice.

Hey, I don't think you are crazy or stupid or anything. Well, maybe just a lil' crazy. I'm just trying to get your goals. You say you want the infrasonics to be louder. Don't we all? Heh, but this isn't the best way, imo. Only the seldom specific signal right at Fb will be louder than an enclosure a fraction of the size. It's like chasing one single frequency and making the driver work for just that single note. 10hz can be awesome but a 10hz fart box won't add much to watching a movie or especially rap music. According to all the frequency plots of done to some popular rap and hip hop artists, 25-50hz is where all that goodness is.

I bid good luck you kind, sir. I really do.

When do we get to see some inroom plots of your beast?

My Dual 18" LLT subs 120dB down to 10hz

 

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post #72 of 615 Old 03-18-2010, 06:43 AM - Thread Starter
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Quote:
Originally Posted by Scott Simonian View Post

I admire your persistence but what you aren't seeing is that the extra dB's isn't covering the entirety of the 'infrasonics', just a very narrow range of them. We're talking a range of about 2-3 cycles here. So narrow you will more than likely not even notice.

Hey, I don't think you are crazy or stupid or anything. Well, maybe just a lil' crazy. I'm just trying to get your goals. You say you want the infrasonics to be louder. Don't we all? Heh, but this isn't the best way, imo. Only the seldom specific signal right at Fb will be louder than an enclosure a fraction of the size. It's like chasing one single frequency and making the driver work for just that single note. 10hz can be awesome but a 10hz fart box won't add much to watching a movie or especially rap music. According to all the frequency plots of done to some popular rap and hip hop artists, 25-50hz is where all that goodness is.

I bid good luck you kind, sir. I really do.

When do we get to see some inroom plots of your beast?

so later on, once Ive learned my lesson, 3 more subs per cabinet and I'm doin good.. thats about 30 cubes per driver
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post #73 of 615 Old 03-18-2010, 07:38 AM - Thread Starter
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so I got the best girl in the world.. i have 3 gal friends, but 2 have been fallin back on their word.. was supposed to get some help painting and picking blinds..but ya know, i

don't care about looks one bit...I care about the builds. This girl been getting her butt kicked helping unload wood and building. I had her cut the cone out for the recone, and

she said "shouish!" I'm a selfish pos.. she sliced/stabber herself right after I said it and blood squirted everywhere. The cut was deep...but she was a trooper. She refused

the hospital but i made her. No stitches, it was a big clean cut so it went back together nicely...put a strip on and sent us home. I owe this girl my life she done so much for

me.

So we get home and she picks the knife back u and says "now what?" so we finished cutting the cone off and went to bed



























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post #74 of 615 Old 03-18-2010, 10:08 AM
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so later on, once Ive learned my lesson, 3 more subs per cabinet and I'm doin good.. thats about 30 cubes per driver

Like I said, you aren't doing anything wrong. There are just better and easier ways of getting to where you are trying to get. Adding more drivers per box is certainly the way to do it. Personally, I'd seal it up and have four to eight drivers per enclosure. At least, at that size. That'll increase the infrasonics more effectively too.

My Dual 18" LLT subs 120dB down to 10hz

 

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post #75 of 615 Old 03-18-2010, 10:44 AM
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I have yet to understand what this thread is about...

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post #76 of 615 Old 03-18-2010, 04:02 PM - Thread Starter
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post #77 of 615 Old 03-18-2010, 05:18 PM
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I have yet to understand what this thread is about...

Yea but you keep coming back....

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post #78 of 615 Old 03-18-2010, 07:06 PM
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Yea but you keep coming back....


Yep...it's like the sun.... the more I stare into it the more it hurts..but I still do it.

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post #79 of 615 Old 03-18-2010, 07:54 PM
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Hmmm, those look more like a fort than towers. Kids would have a blast playing with that . And you're going to stuff it with pillows....Wait, a minute, I've got it! The Pillow Fort!

We love overkill. -- gperkins1973
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post #80 of 615 Old 03-18-2010, 10:45 PM - Thread Starter
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1 complete less a port brace... and onto #2...



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post #81 of 615 Old 03-19-2010, 07:46 AM
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Those cabs are insane!

Man, you weren't kidding when you said you were not concerned about the size!

kudos!

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post #82 of 615 Old 03-19-2010, 10:19 AM - Thread Starter
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Those cabs are insane!

Man, you weren't kidding when you said you were not concerned about the size!

kudos!

thanks man!
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post #83 of 615 Old 03-19-2010, 10:27 AM
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Why are you cutting up the drivers ?

I don't get that

Whether you think you can or think you can't...you're correct!
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post #84 of 615 Old 03-19-2010, 04:57 PM - Thread Starter
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Why are you cutting up the drivers ?

I don't get that

recone. I have 6 dual 4s coming, that one was a dual 2





Anyone want to guess what that other cut out line is for?

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post #85 of 615 Old 03-19-2010, 06:18 PM
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i really like the fact that you and your family are sharing in the build fun. that's worth way more than the cost of admission by itself.

on the other side, after reading several pages, i don't understand this build from a technical perspective. did i miss a post with the performance objectives?

Listen. It's All Good.
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post #86 of 615 Old 03-19-2010, 06:53 PM - Thread Starter
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Quote:
Originally Posted by LTD02 View Post

i really like the fact that you and your family are sharing in the build fun. that's worth way more than the cost of admission by itself.

on the other side, after reading several pages, i don't understand this build from a technical perspective. did i miss a post with the performance objectives?

that makes me smile

objectives? 1: excentric. to be different. 2: low 3.... get the 22's when they come out!

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post #87 of 615 Old 03-19-2010, 07:34 PM
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roger that krypto...you've got something special going there.

back to the subs, is there any space left in that room for seating? ;-)

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post #88 of 615 Old 03-20-2010, 12:29 AM - Thread Starter
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uh-oh...i think I boxed myself into a corner....
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post #89 of 615 Old 03-20-2010, 01:08 AM
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I guess taking all the space in the room with the boxes will make it easier to pressurize... =]
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post #90 of 615 Old 03-20-2010, 04:33 AM
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buyer must pay shipping.
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