4 Fi Audio IB3 18's walled off 15Hz tune in a VAN BUILD LOG

[shadowslayer666 1]

why tune so low??? it would be cool to feel that though since you couldnt hear it

[kryptonitewhite 1]

why tune so low??? it would be cool to feel that though since you couldnt hear it

lol it just dawned on my that no one has said that yet... since this thing really got moving anyway. I've had that big debate for years... I been tunin below 20Hz for years

just try it once and you will see what everyone thinks they know is not there. You cant take my word for it, you just gotta try it...as big as possible and as low as possible.... start listening to all kinds of stuff, and you will be chillen then... "whoah? what was that?" rewind. play. rewind. play.

Forget Audacity or any other spectral analyzer. Forget what all the know it alls say...cuz they are usually pretty darn smart, but, no one knows it all. Use your own ears..and yes..other senses...

thats all i can say man.

Edited April 10, 2010 by kryptonitewhite

[kryptonitewhite 1]

Oh ok, i thought you were talking about doing a 2 chamber setup, thats why i was asking.

technically yes. like most of us hobbyists, we generally know that the cabin has a large influence..rather, listening position/area...outside, arena, home on the crapper... but with this particular build where 3/4 to 4/5ths the van is the rear enclosure... leaving the front cabin much smaller than the rear... what is this thing? I gotta think the listening area wil have as much or more effect on cone excursion, tuning, FR responce curve, impedence... everything... than the rear. Guess we will see!

I mean, the rear volume looks like it will be between 80 cubes and 120 cubes...thats a large difference, but I havent measured since I got the MDF in..and I dont know if I'm going to put a back on the "box" yet anyweay. Lets assume 90 cubes after disp. My port volume, 20"x54"... is about 9 cubes alone! Whats the fron aiorspace? 40-60 cubes? the windows... 2'x2'x2"? Windows up... then its just the port between the 2 chambers...

know what I mean?

[kryptonitewhite 1]

ya so... when i was looking for power wire, I couldn't get a definitive on AP30001D terminal size, but i think it is 0. So I looked for 0. Then, the guy I bought the amps from was selling 50ft spools for $100. But i found some cheap crap for $65. Sure, it wasn't pure copper, and he couldn't tell me if his was when he said "sorry I don't get generic so i can't go less than a bill" or something to that effect. But i figured Ive never ran bigger than 4 gauge.. i dont care what anyone says, screw internal resistence and volatge drop and all that talk. I had 6 red tops off 4 gauge and I was fine, so if I get cheap 0 gauge it still has to be better than the best 4 gauge.

Another angle: The junk was $50, $65 shipped. The "good stuff" was $100... IDK how much shipping would tag on, but let's just say the cost was double. There's no way that the copper only wire is gonna be twice as good as the junk wire. So screw it!

BUT, I got it today, and you can literally see a fraction of the strands are aluminum! OK, so i was thinking I would have to pay double to get some 99.98% pure copper wire or some crazy number vs maybe 80%-90% copper...but wow, this is like 60%-80% maybe? IDK...

And, it sure doesn't look huge. It resembles the 4 gauge I've been working with..but the packing says 0 gauge..so whatever.

So then I had to look for terminal rings, and IDK the terminal size on my AGM batts...so i just get the biggest I can order... and of course its a touch small, so I have to use a drill and shave the holes to get them to fit my battery terminals.

Oh well! No crying here. I got a badass system in progress. I'm not letting some collapsed foam in my way! Slow me down? ya. But it will get done!

So as for foam, I drilled 2 holes in 2 separate pockets and sprayed just 1 can in each. It looked normal at first, but later it looks like it's just melting into the rest of the blob. I'll look again tomorrow in new light.

I got some cheap paint and painted the caulk from the window..looks a lot better.

I'ma keep on movin! ALT and AMPS should be here soon.

[kryptonitewhite 1]

The wire nor anything else is a huge issue. Here is an end pic to show jacket thickness.

if I am competing to get every last drop of SPL, that last .01dB..OK. If I'm competing in SQ and I just gotta have it perfect...fine.

But 99% of the time I'm going to be using 20% or less of the power I have on tap. Those IB drivers aren't going to be getting 3000 watts RMS! Those 1" tweets aren't going to be getting 200 watts RMS! I am over building so that I can coast rather than redline

[kryptonitewhite 1]

ok nevermind! my old 4 to my new 0... big difference

[bigrank916 72]

This van is getting there. Its very interesting. The old front stage looks a little whacky but Im glad its not going in there. What kind of ideas for the new front stage do you have now?

[kryptonitewhite 1]

This van is getting there. Its very interesting. The old front stage looks a little whacky but Im glad its not going in there. What kind of ideas for the new front stage do you have now?

right now it's looking like I'll put the front stage in the roof facing strait down. No one is gonna like it, but I'm ok with it. There's no spcae in the doors without being muffled by the seats or people's legs. I have to modify the dash in the VAN too, cuz the Alpine double din is too big..looks like the factory is din and 1/2? IDK...I'll dig deeper when I get there...but I doubt I'll do an all new dash again.

So the roof panel I put in, another 4'x8' sheet of 3/4" MDF... I'll put all the way to the front, bend it down 2" so it comes to the bottom of the frame where the windshield connects. Tweeters on the outside, then FRs, then Exts.

[bigrank916 72]

This van is getting there. Its very interesting. The old front stage looks a little whacky but Im glad its not going in there. What kind of ideas for the new front stage do you have now?

right now it's looking like I'll put the front stage in the roof facing strait down. No one is gonna like it, but I'm ok with it. There's no spcae in the doors without being muffled by the seats or people's legs. I have to modify the dash in the VAN too, cuz the Alpine double din is too big..looks like the factory is din and 1/2? IDK...I'll dig deeper when I get there...but I doubt I'll do an all new dash again.

So the roof panel I put in, another 4'x8' sheet of 3/4" MDF... I'll put all the way to the front, bend it down 2" so it comes to the bottom of the frame where the windshield connects. Tweeters on the outside, then FRs, then Exts.

Well as long as it sounds good to you and performs the way you need it to, then go for it dude! There isnt any uniform laws of how to do this hobby. Everybody builds different stuff and thats what makes it so interesting.

Lets keep these pics comin so you can open another PB account!!!

[kryptonitewhite 1]

This van is getting there. Its very interesting. The old front stage looks a little whacky but Im glad its not going in there. What kind of ideas for the new front stage do you have now?

right now it's looking like I'll put the front stage in the roof facing strait down. No one is gonna like it, but I'm ok with it. There's no spcae in the doors without being muffled by the seats or people's legs. I have to modify the dash in the VAN too, cuz the Alpine double din is too big..looks like the factory is din and 1/2? IDK...I'll dig deeper when I get there...but I doubt I'll do an all new dash again.

So the roof panel I put in, another 4'x8' sheet of 3/4" MDF... I'll put all the way to the front, bend it down 2" so it comes to the bottom of the frame where the windshield connects. Tweeters on the outside, then FRs, then Exts.

Well as long as it sounds good to you and performs the way you need it to, then go for it dude! There isnt any uniform laws of how to do this hobby. Everybody builds different stuff and thats what makes it so interesting.

Lets keep these pics comin so you can open another PB account!!!

now thats what i'm tryin 2 hear. It's crazy how many people get so worked up for not doing it their way. People get so pissed off, its pretty discouraging. I got told just a bit ago stop posting so many pics, and here I get told more.. people are interesting

[Julian 641]

TITS OR GTFO

I mean... PICS OR GTGO!

lookin good man.

[stevemead08 752]

Screw the other sites!! Your on THEE site.

[kryptonitewhite 1]

TITS OR GTFO

I mean... PICS OR GTGO!

lookin good man.

I did some work today and snapped some pics but nothing interesting..tryin to pile up the stupid stuff so I'm not posting a boring pic every few hrs but when i do somethin worth lookin, I'll put it right here.. on THEE site

Edited April 11, 2010 by kryptonitewhite

[Kanaworm$ 292]

Looking good! Should be another warm day in Soo Foo for you to get more work done!

[kryptonitewhite 1]

Looking good! Should be another warm day in Soo Foo for you to get more work done!

whats up man! where are you at???

[kryptonitewhite 1]

well I used the 50 bucks I saved on wire and got a hydro crimper there's a dude on www.**** doing 4 DP21s 4th order that sent me a link t get it. My window started acting up so i put in a new motor yesterday. I pulled the dash to see how I'm gonna customize it to get the Alpine to fit...man it's a tight squeeze. I knew all along once I popped the dash open I'd have to look and see if i could do the front stage in it again..but nope, a HUGE aluminum plate. Good. The roof build will be easy and simple. Started working on the false roof and started the bracing for the wall... 2 layers of 2x6... will make a # sign too with 2 supports up and down and 2 side to side going between subs and port. oh, and I got a fish tank pump and hose... i drilled a bunch of holes in both sides the other day and let it sit..nothing has happened...so I'll leave that on overnight and see what happens.

[Dutchie. 10]

I am subscribed.

Keep up the good work.

[Kanaworm$ 292]

Looking good! Should be another warm day in Soo Foo for you to get more work done!

whats up man! where are you at???

Straight north in Watertown!

[RaTtLz 3]

Looking good! Should be another warm day in Soo Foo for you to get more work done!

whats up man! where are you at???

Straight north in Watertown!

sweet man I'm an hour away from watertown. I'd definitely love to make a trip to talk shop with ya! Love the build so far!!

[kryptonitewhite 1]

I am subscribed.

Keep up the good work.

cool thanks!

Looking good! Should be another warm day in Soo Foo for you to get more work done!

whats up man! where are you at???

Straight north in Watertown!

my kid and her mom lived up there for a while... Dashboard sometimes has 1 or 2 comps a summer here... if I get this done before one you should come check the show

Looking good! Should be another warm day in Soo Foo for you to get more work done!

whats up man! where are you at???

Straight north in Watertown!

sweet man I'm an hour away from watertown. I'd definitely love to make a trip to talk shop with ya! Love the build so far!!

where you at? heck yess... I hate dashboard but I got a buddy that worked there for a while and he opened his own shop in Luverne MN.. once this build is done I'm gonna pop in on him and find out what i gotta learn to compete. Just for fun, see what I can get.

[Notorious97200 339]

This build log has really got my attention, and I think you are doing a great job from what I can see, but the problem is I can't see much! It may be just me, but there are like three pages of "bandwith exceeded" photobucket warning things.

Either way, good luck, and I hope I can at least see the finished pics....

I'm not the only one !

I thought I had a problem with my computer !!!

Keep on posting pics.

Nice work man

[kryptonitewhite 1]

This build log has really got my attention, and I think you are doing a great job from what I can see, but the problem is I can't see much! It may be just me, but there are like three pages of "bandwith exceeded" photobucket warning things.

Either way, good luck, and I hope I can at least see the finished pics....

I'm not the only one !

I thought I had a problem with my computer !!!

Keep on posting pics.

Nice work man

thanks! Im told its from too many viewers/views in a given amount of time..so kinda good news ?

[kryptonitewhite 1]

the roof is in, it was a lot of work getting the roof to curve and bend...so bad that fasteners wont hold. Ive been considering using 2 2x6s to go behind the seats to keep them from going back and hitting the subs..well now they're roof supports as well

sketched out the wall so I can see how I'm gonna make the # sign... it's looking like it will have to be just 2 going up and down, and not doubled up only part way side to side but maybe doubled up... port will be in the way

I was only gonna tripple baffle the wall, but i may have to add a couple layers..but then the subs might get close to wacking the 2x6 roof supports/seat protectors

12,000 watts. Combined with the three 4-channels, that is 14,000 RMS potential

[kryptonitewhite 1]

front stage

so it's being said that gauge must be measured by wire, not jacket included, but everyone has the same reaction...looks small for 0. So which is it?

[kryptonitewhite 1]

I've got aprx 105 cubes before port displacement and wheel well/ AC condensor, heater core, subs, amps, and bracing.

20" X 50" port (55" total, 5" will stick out like my HT) is over 9 cubes displ... so 88 total, about 22 cubes per sub...same as my Aztek box. My aztek had a 7.5" diameter port for 44" of area, where 20" is 314/4= 78.5" per sub