4 Fi Audio IB3 18's walled off 15Hz tune in a VAN BUILD LOG - Page 7 - AVS Forum
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post #181 of 304 Old 05-15-2010, 12:00 AM - Thread Starter
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Originally Posted by cubdenno View Post

Ahhh. Read that at work. Video link didn't show. Just glad I was able to help!!

im not kidding man, the whole project was on hold for a week cuz no one would/could help

so thank you...now im movin forward again!
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post #182 of 304 Old 05-15-2010, 10:02 PM - Thread Starter
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errr day, got 3 different cars helpin other people do their stuff

had 2 pull the 6.5's and foam some more....these things move too much air! Ripple too much sheet metal!







and babysat my nice, hadda put her to work!







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post #183 of 304 Old 05-17-2010, 07:15 PM - Thread Starter
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cant tell, but silver in front, gold in back







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post #184 of 304 Old 05-17-2010, 08:29 PM - Thread Starter
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post #185 of 304 Old 05-18-2010, 12:51 AM - Thread Starter
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So I started with the crossover set to:
Tweets HP 10kHz, LP 20k
4.5's 250Hz-14k
6.5's 50Hz-250Hz

I played with the tweets even HP at 14k for a while, had the 6.5's HP from 50,56,63, and 71Hz.

I revamped, brought the tweets down to 4kHz, the 4.5's LP up to 710, and the 6.5's up to 710.

Totally different. Over all, much louder. The 6.5's aren't acting like subwoofers anymore, the tweeters are actually contributing now, and it's a whole new ball game. The subwoofer...er the mid-woofers aren't near as loud as in thumpin and flexin and poundin, but theyre louder bringing up the 250Hz-710 range significantly.

So now I'm kind of getting muddy and confused and lost, Ive never had any experience going active before, only tons of research, free internet self education. I don't know when I'm making things betetr or worse anymore, sometimes it seems like it's a great SQ system for what it is, sometimes it seems terrible. Sometimes it still seems loud as hell, I am always getting looks, gawked at, and chicks breaking out into dance from 2 blocks away..but sometimes it just seems weak as hell for what it is.

I can't tell up from down, in from out anymore!

So right now, I am at:
TW 4k-20k
MR 710-4k
MW 50-710

I am thinking that I will bump the MW up from 50Hz to 63Hz, 71Hz, or even 80Hz once the subs are in. I think SQ guys are hard set on getting the front down to 50Hz for up front bass? I'm not sure. But I think once I have the SUB woofers in, I know I should cross them at 50Hz, but I think they will still drown out any sub 80Hz material from the 6.5's no matter how well they do.

IDK???
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post #186 of 304 Old 05-18-2010, 07:02 PM
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Up the midbass crossover. 80-100 hertz is fine. You can play with the slopes. it will give you better power handling. I am not surprised you found the system sounding better with the revamped Xover points. Those 4's and tweets really needed it. Up front bass is a function of your midbass drivers along with vibration reduction. Mostly of panels that cause localization.

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post #187 of 304 Old 05-18-2010, 09:28 PM - Thread Starter
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alright so I'll try
TW 4k-20k
MR 710-4k
MB 80/100-710!

thank you again!
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post #188 of 304 Old 05-19-2010, 11:25 AM - Thread Starter
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I went up to 80 for a while and it was much better. Then I played around and 63 is clearly too low, they lose punch/kick and seem like they would be overtaken by the subs too much. Up to 80 and I lose to much overall down low. 71 is the sweet spot!

Thanks!
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post #189 of 304 Old 05-19-2010, 08:48 PM - Thread Starter
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So I've been working on a pre-emtive plan for noise tickets: was gonna go to court when I get my 1st ticket, explain that I'm not here to say I wasn't too looud or don't deserve a ticket, but that I want our local law changed. Right now it is if they hear you over 50 feet away. So if I live at the end of a park, with a football field, there's kids at the other end..over 300 feet away, will they get a ticket if I can hear them? Speeding is measured in MPH. Sound should be in SPL. What if I play 10Hz test tones full bore? I will be fully capable of single digits in the van... you can't hear it from 5 feet away, let alone 50 feet.

I understand that no one wants to hear systems bumbing by their house all hours of the day. I am generally not the guy that drives by houses in neighborhoods at 3AM. But I will not say I have never ever done it or never ever will again.

How about on main roads during the day? Trucks are loud. Motorcycles are loud. Horns are loud. But there has to be some limits, some freedoms.

Anyway, I shook one off already today, yes just for my front stage..waiting on wire to install HO alt and subs. He was going the other way on our bussiest street, he turned around and got behind me. I quick did a lane change, he did the same, then I turned off fast, he blew past me and took the next turn, so I ditched him.

Then, later, my neighbor wanted me to play her a song..a weak ass song, and, now that my crossover's are set to 71Hz... they are nothing like they were before for thumping... but a cop came. He was cool, we ********ted with him for a while, showed him the system, and I explained my feelings on the 50ft rule. Explained I am not fighting the fact that if I am too loud, something should be done, but I think it needs changed from feet to DeciBels. I said what can you do then if I do 10Hz? He said then theyd have to charge me for disorderly conduct, no longer a ticket but an arrest. He sdaid don't wait for a ticket and try my luck explaining to judge, thats hit and miss, go to the city council.

anyway

got the dash back on now that the deck is secured. Needs prettied up.






carpet in















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post #190 of 304 Old 06-11-2010, 10:21 AM
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Anything new?

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"No one wants to fight the naked guy."
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post #191 of 304 Old 06-13-2010, 06:15 PM - Thread Starter
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Hey everyone, I am back...I don't get internet back on till wednessday, wed night I'll try to get caught up on email and posts. I got my 2nd spool of 0 gauge, so I'll be getting the alt in ASAP. WOW my ears are numb... front stage is still killer, tweaked a little more, and still turning heads all over town.

Also, I made some posts on a few forums a while back about enclosures getting so large that the port no longer functions properly. I was repeatedly told WinISD is right..no matter how big, the port still works and still yeilds a larger gain. Well my 2 IB3 18's off 2 EP4000's aren't much louder in 256 cubes than the single one in 22 cubes off 2 walmart HTIAB amps... so I'll be cutting the towers down too.
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post #192 of 304 Old 06-13-2010, 06:15 PM - Thread Starter
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Quote:
Originally Posted by cubdenno View Post

Anything new?

nope, youre still the man for solving the switch issue tho!
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post #193 of 304 Old 06-14-2010, 12:28 PM
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Quote:
Originally Posted by kryptonitewhite View Post


Also, I made some posts on a few forums a while back about enclosures getting so large that the port no longer functions properly. I was repeatedly told WinISD is right..no matter how big, the port still works and still yeilds a larger gain. Well my 2 IB3 18's off 2 EP4000's aren't much louder in 256 cubes than the single one in 22 cubes off 2 walmart HTIAB amps... so I'll be cutting the towers down too.

To be honest, I was curious if that phenomena wouldn't occur. You might look into Pete kulicki's site and maybe order a print(I know... Spending more of your money.) I own 5 enclosure designs. He has his detractors. And there are some guys who hug his nuts so tight I think Pete's voice should squeak. But in every case i have seen and used, he has used science to back up his results. They have been the best money I have spent regarding sub bass. Just my $0.02.

Glad to see you are still here. I will be posting my son's install here soon. We are gearing up. Still buying parts. nickel and diming us to death!

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"No one wants to fight the naked guy."
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post #194 of 304 Old 06-14-2010, 09:43 PM - Thread Starter
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still no internet, no time to reply....but I will when i can. Did the Big 3 today and got the alt in..I had a little alt whine before, now I got a lot but all my grounds are solid. BTW while the van sat 3 weeks, when I came back it was still sitting at 12.7V

I put a ground directly on the alt bolt to the chassis, another ground, same spot, on the alt to the negative terminal on the front batt, did 2 runs posative alt to posative on front batt. So get another toggle switch and run the deck constant and deck ignition to rear batts???

putting subs in NOW!
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post #195 of 304 Old 06-15-2010, 10:51 AM - Thread Starter
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Steve Meade, you're a FREAK. And all you other dudes out there with 4 or more hardcore subs like BTLs Wardens DD and the like. These little IB3's are pretty loud, only using about 1/3rd excursion. Internet hopefully tomorrow, then I can get caught up.
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post #196 of 304 Old 06-17-2010, 12:20 AM - Thread Starter
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post #197 of 304 Old 06-17-2010, 12:34 AM - Thread Starter
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post #198 of 304 Old 06-17-2010, 04:39 AM - Thread Starter
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I need more power for the amps! So all those s-10/Astro guys out there with the 4.3l... who has multiple alts? I think I want to pull the AC compressor and mount 2 there if I can make/find a bracket. I think I have voltage drop. I have an Iraggi 220 (160-200 amps @ idle). My lights fade a little when it hits hard, and, the subs run pretty hot...so I think the amps are clipping due to voltage drop.

So I loved it for a while without building a back wall, the rear doors don't get hammered on at all... but today I finally see that the roof and sides have massive flex... the foam and MDF worked, all 3 move separately, but each piece moves as a whole... it's pretty insane seeing how all 3 are separate solid pieces but the roof isn't connected to the sides with any reinforcement. So I got more 2x6's so I can build a frame for the back today.

Without the back wall, I am at 103 cu ft after displacement so I had a 13.5Hz tune. I cut the port down from 30" to 19" for a 15.5Hz tune. I'm gonna put the back wall in, reducing enclosure volume, raising the tuning, and adding rear support. The front is completely solid, the wall has zero flex, but in the back, there's just nothing connecting the side walls to the roof.
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post #199 of 304 Old 06-17-2010, 04:56 AM - Thread Starter
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Quote:
Originally Posted by cubdenno View Post

To be honest, I was curious if that phenomena wouldn't occur. You might look into Pete kulicki's site and maybe order a print(I know... Spending more of your money.) I own 5 enclosure designs. He has his detractors. And there are some guys who hug his nuts so tight I think Pete's voice should squeak. But in every case i have seen and used, he has used science to back up his results. They have been the best money I have spent regarding sub bass. Just my $0.02.

Glad to see you are still here. I will be posting my son's install here soon. We are gearing up. Still buying parts. nickel and diming us to death!

Im pretty sure it does! Im making the van box smaller today too! It'll go down to about 70 cubic feet, 19.5Hz tuning.

I used to talk to Pete a lot. I baught one of his XX-Colossus amps, baught a T-Box design for an S15L7, and he was going to give me a design modification for my old wall. He's a great guy!

I know what you mean by nickel/dimin to death, people ask what I've got into the system and I have no idea... but the non-stereo equipment is probably more than the equip itself!
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post #200 of 304 Old 06-17-2010, 10:18 PM - Thread Starter
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so can the IB3's out gas? I got brave and turned the sub control up from 2 to 5 and they were fine. I think when they were new they had to out gas, cuz they stunk a little..but I think Im ok now?
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post #201 of 304 Old 06-18-2010, 06:21 AM - Thread Starter
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post #202 of 304 Old 06-18-2010, 10:12 AM - Thread Starter
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post #203 of 304 Old 06-19-2010, 12:41 AM - Thread Starter
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post #204 of 304 Old 06-19-2010, 03:23 PM - Thread Starter
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DB-Audio made this track, 19Hz, 15Hz, and 13Hz I believe. 50 cubic feet, 23Hz tune, massive air flow through a 20" port. The caulk at the edge of the wall was not the air leak, it's coming from around the sub.

http://www.youtube.com/watch?v=rdBvHjuN9FQ

http://www.youtube.com/watch?v=zha3B3cKmyg

http://www.youtube.com/watch?v=dttvq3bD1Z0
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post #205 of 304 Old 06-19-2010, 04:53 PM - Thread Starter
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DB-Audio 30Hz.. email me to get it kryptonitewhite at hotmail

http://www.youtube.com/watch?v=d2Gs82ZQULA

opus dei

i cant believe how well the camera was able to pick up the subsonics..youre not gonna get them with your PC/HT speakers, but my dual IB3 18's in 128 cubic feet each, 12" ports tuned to 14Hz off two EP4000's does at my house!

http://www.youtube.com/watch?v=uIY5y8OIiQQ
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post #206 of 304 Old 06-19-2010, 11:38 PM - Thread Starter
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So the KX850.4 over heats now with the rear wall up. I reconnected my AC compressor and it works, so I need to keep it, fix the rear AC fan and replace the resistor and coil that I set on fire a few months back, cut a hole on each side of the box, and run the AC through.. suck in from 1 side and blow through the other. I need another alt, so I'll have to find out how to mount it backwards near the AC compressor. Got more work ahead!

The 13Hz-19Hz track blows the hot air right out! Its crazy.
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post #207 of 304 Old 06-20-2010, 04:32 PM - Thread Starter
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post #208 of 304 Old 06-20-2010, 04:49 PM - Thread Starter
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trying to do a hair trick with DB Audio's 13Hz-19Hz sweeps, it was driving this chick CRAZY! She wouldnt stick her head by the window and it was already blowing.

http://www.youtube.com/watch?v=aaKAVr9D0DM
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post #209 of 304 Old 06-20-2010, 04:59 PM - Thread Starter
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my buddy, 6'2" 240LBS, crawled into the box to check the amp when it shut off!




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post #210 of 304 Old 06-20-2010, 06:56 PM - Thread Starter
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this is as hard and loud as she gets... see how loud she is from 20 feet away or so? IDK how..but the camera makes it look like the mirror is barely moving..even when I was watching the screen while recording... but you cant see anything in the mirror when it hits, it moves so far

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