ShiZZZoN's Build Log

[shizzzon 461]

Gots another vid.

My buddy at work actin goofy, lol. He usually holds his ears when he's in my car but i talked him into not so this is some of the pain associated with listening to Bone Crusher in my car.

[shizzzon 461]

i started masking off my upholstery and wiring in my car in preparations to spray triple expanding foam around the box to seal it off and form the wall.

It looks as though it may take me til this friday before i actually start sealing it because of all the masking that has to eb done and setting up barriers to prevent it from expanding into areas that it doesn't need to go!

I did get just over half of all the masking done today.

I should the rest of it done by thursday night, then setting up the barriers friday afternoon. I'll probably start the sealing procedure Saturday morning and just continue throughout the whole day.

I am not a pessimist but i will not be surprised if it isn't 100% sealed by saturday night.

I'll be testing it's sealing properties once everything is cured but there is so many contours and crevaces in my car that it's ridiculous.

Oh, and once the wall IS sealed... i'll be doing port testing for about 3-4 weeks so there won't be any remarkable updates for a while as this will be a time frame where testing will commence and lots and lots of information will be assessed for ALL of the ports that will be built for SPL, Bassrace, Driveby, Daily driving and Port Wars.

[RobClay 20]

Vids aren't workin for me for some reason.

[shizzzon 461]

just wanted to let u guys know i'm about to seal the car...

I got all my upholstery protected from the foam in case i ever want to rip the wall out.

I gotta start setting all my boundaries in the car then i'll start the sealing process.

It should be done either today or tomorrow.

Once it's sealed properly... then i'll commence port tuning, but i also gotta see how much i gain my sealing too!

[porkchop 304]

looking forward to see how much you gain.

[shizzzon 461]

LOL, this is funny...

I've used Triple Expanding foam before but not to fill voids as large as sealing a wall...

I'm sealing this wall 2 ft DEEP!

and uh.... i just got done using 2 cans of this stuff and it JUST now prohibited sunlight from coming through the top of the wall...

I still have a 1ft more of depth on the top and about 2 more ft on both sides that is 2.5 ft high on both sides... so yea i'm probably gonna need about a pallet more, lol.

[jcarter1885 995]

keep it up, cant wait to see the finished wall.

[shizzzon 461]

almost done sealing as far as i know!

In about 45 minutes, i gotta spray one more can then let it cure... then i'll test and see if it's sealed good enough or not around 3-4pm EST.

So far, i would have used 9 cans of triple expanding foam.

[jcarter1885 995]

almost done sealing as far as i know!

In about 45 minutes, i gotta spray one more can then let it cure... then i'll test and see if it's sealed good enough or not around 3-4pm EST.

So far, i would have used 9 cans of triple expanding foam.

It took my car about two or three days to finish curing, because it expanding and widen things more than I wanted to but after a few days it went to its normal state or position. It will be done foaming up to a harden piece by tonite but it should still be going through its expanding and slimming stage for a couple of days, just sharing my experience with it.

[shizzzon 461]

there is no transmission loss of spl at low volume with hatch door open.

In about an hour or so, i'm gonna leave so i can go meter myself and see if i'm doing louder sealed now with hatch door open and shut.

Next thing on the list is port tuning...

[shizzzon 461]

Ok, back from testing-

Before i sealed the wall, i was gettin 152.2.

Now i am getting 152.86db on my meter.

I retested with the hatch door open... and i got the EXACT same score so woohoo! it's sealed.

Next phase- port testing.

So for the next month or so, don't expect any interesting updates... This is to test a variety of ports for tuning purposes, not so much for spl readings.

[shizzzon 461]

OK, just got back from some more testing.

I got done testing SPL, daily and Bassrace.

I still have to test driveby and port wars but that's later.

I am peaking at 58hz right now with no port in the wall. My actual peak is 50hz even and by the looks of it, it should gain me 0.7 db theoretically so we'll see...

After i build a port to peak at that, then i gotta modify port area to see if i can gain anymore.

Also, now that i've tested bassrace, i know what sets of frequencies are loudest in my car now...

Can you believe that 23hz is a peak in my car? it doesn't get as loud as 23hz does again til 35hz!

[ncacoates 104]

23hz is a crazy peak in your car not to mention with your tuning

[shizzzon 461]

yea, makes for a good CT(car theater) project, hehe

[ncacoates 104]

yeah lol sure would

[shizzzon 461]

Ok, well i got my response curve of my car a while ago. This is SEALED at the Driver Side of the car at the windshield.

I'm about to go do testing with the car open and see what the response is then.

So... if u are lookin to wall a Scion tC, this is how my graph looks Sealed-

[Lucky 76 5]

Ok, well i got my response curve of my car a while ago. This is SEALED at the Driver Side of the car at the windshield.

I'm about to go do testing with the car open and see what the response is then.

So... if u are lookin to wall a Scion tC, this is how my graph looks Sealed-

j/w how u tested this .... id like to see where my peak frequency in my car is

[shizzzon 461]

it's fairly easy, just time consuming.

You would need to setup your vehicle the way it will be when your finished sub box is actually installed.

What i mean by that is, if u plan on running a wall, don't try to find your peak note before building the wall...

Now, if you are not building a wall, then you can test anytime practically.

All you need to do is get a sealed box with any size sub will do really.

Maintain the same volume level throughout the frequency range to be tested.

I tested each note between 20-100 so i can see how my car reacts to different notes.

I run it at a low volume level so the voltage to the amps wont change during the test.

Once you find your peak note, sometimes your note may differ +/- 1hz from your peak note you just found when you BLAST it at a comp. This is normal if this were to happen but at least this test saves you all the time recharging your batts, etc.

[Jay-C76 333]

Man, I might have to make the trip to come down to see ya....

I'd like to see mine on that meter and see your insane install!!!

It's been a little while since I've been down to Louisville,

I think it's a little over an hour if I'm haulin' ass!!! LOL

[shizzzon 461]

whenever i drive to kings island from here, it takes me 2hr 7min on the dot every time.

[shizzzon 461]

ONE VERY LARGE UPDATE!

As you can see i posted my response curve of my car up top so i can go by that to see what frequencies my car likes...

Well, it paid off!

I finally was able to put a port in the box today. This will be the test of a VERY LONG port testing process.

This port is 157sqin and tuned to 28.5hz!

I just hit the highest number yet!

Db meter was placed in the kick and in front of the steering wheel to simulate MECA style reading.

Peak note in this port - 50hz, my car's peak - 50hz

Again, i'm only tuned to 28.5hz and burping at 50hz...

MECA Headrest measurement- 152.55 Db

In the Kick - 155.76db

And this port is Duct taped in place and is no where near where it needs to be tuned too!

I still gotta find the right port length and area, angle port, seal the outside of the car, etc...

This was a MAJOR upgrade, nothing i was expecting!

I had to stop measuring the Db reading for both levels due to excessive pressure..

From now on, i will be wearing hearing protection due to the extreme pressures that was experienced when doing these 2 tests.

Yes, both test were clipped but were not fully ran to the max like my previous ones due to pressure. If i had cranked it up though, it would have only gained, if any, 0.1 db at the most.

Voltage level - 13.3v at the batteries, current draw is unknown.

[shizzzon 461]

Also, here is my response graph with the door OPEN-

And here it is again with everything sealed up -

This is how my car reacts to different frequencies sealed and then open.

[jcarter1885 995]

you got me wanting to start a process for finding my vehicle's peak frequency. my first step is to go and buy a TL meter.

[Jay-C76 333]

whenever i drive to kings island from here, it takes me 2hr 7min on the dot every time.

Takes me about 35 min....LOL

I'll venture down in August for sure!

Maybe not this weekend but next...(if you aren't that busy for a few hours)

I'll have to get directions from ya.

[shizzzon 461]

yea that should be fine. Maybe i'lll be doing a little bit louder than a 155.7 in the kick by then.