If this don't work I give up

[DDtC]

I have never tried a purpose built loud box. I always thought I could get good numbers with a daily box, that hasnt worked out.
We will see this weekend if my vision works out. A tick over 3 cubes net with a 7 inch aero tuned at 39hz. I guess it's going to be real peaky but I don't care anymore.
38.47 square inches of port area. 12.63 per cube.
Wish me luck

[rebelfromva]

I had my XL tuned right around there. Should do good.

[dbeez]

i hope but dont see it doing the trick.

[DDtC]

I didn't mind it tuned at 35. I love it tuned at 31 though

---------- Post added at 09:27 PM ---------- Previous post was at 09:26 PM ----------


i hope but dont see it doing the trick.

Speak up? It's a bit late now though

[mazdakid]

what number are you going for?

[Kangaroux]

Port area seems real small for a loud/burp box...I woulda gone for like 16-18 per cube but that's just me.

[DDtC]

Port area seems real small for a loud/burp box...I woulda gone for like 16-18 per cube but that's just me.

It's a aero. And it's not really a burp box

[DDtC]

what number are you going for?

I just want to break a 50. This box is a copy of one that did a 149 with level 3s and AQ2200

[DbDesigns]

moar port. shoot for 20-25 per cu ft.

[DDtC]

moar port. shoot for 20-25 per cu ft.

It's a aero. 12 is already big

[Villeza1]

How big is the enclosure?

[Kangaroux]

It's a aero. 12 is already big

Not really. Had a local doing 52's out of the trunk with 2 12's and a 10" aero.

[DbDesigns]

Not really. Had a local doing 52's out of the trunk with 2 12's and a 10" aero.
myjaja ;

[av83]

I have never tried a purpose built loud box. I always thought I could get good numbers with a daily box, that hasnt worked out.
We will see this weekend if my vision works out. A tick over 3 cubes net with a 7 inch aero tuned at 39hz. I guess it's going to be real peaky but I don't care anymore.
38.47 square inches of port area. 12.63 per cube.
Wish me luck

iirc hispls ; made one that was tuned to 40, and wasn't thrilled about the fact it had a fairly flat response. he was shooting for a bit more of a "one-note-wonder"....
I think it had a giant square port though. And it was in a truck.

[Villeza1]

DATS wt3 will help...

[DDtC]

How big is the enclosure?

3.05 net. DC subs don't like any bigger with my power.

[DDtC]

Not really. Had a local doing 52's out of the trunk with 2 12's and a 10" aero.

Burp? I still want to play some music. I'll give up the low stuff for a good number. I still have a daily box if I want it

[Villeza1]

3.05 net. DC subs don't like any bigger with my power.

before sub displacement?

[DDtC]

before sub displacement?

After everything. Subs, bracing and the octo. It's 7 but 8.5 outer. That's something else, with my height I can't go any bigger

[Villeza1]

After everything. Subs, bracing and the octo. It's 7 but 8.5 outer. That's something else, with my height I can't go any bigger

Sounds like it'll work, only thing left to do is test.

[DDtC]

Sounds like it'll work, only thing left to do is test.

I hope so. I'll be playing MECA on the 30th and im stuck in MOD 3. It's state finals do I might be sucking

[pro-rabbit]

Just build a burp box. Increase port area and raise tuning.

This is the classic, "You can not have your cake and eat it too.." situation.

[DDtC]

Just build a burp box. Increase port area and raise tuning.

This is the classic, "You can not have your cake and eat it too.." situation.

All I need is a 150. Can't demo with a burp box

[Kangaroux]

Burp? I still want to play some music. I'll give up the low stuff for a good number. I still have a daily box if I want it

Actually he was doing 53's on a burp. Did 150 - 151 on music in the low 30's. Loudest stock street trunk in the world lol

[DDtC]

Actually he was doing 53's on a burp. Did 150 - 151 on music in the low 30's. Loudest stock street trunk in the world lol

Well it's a good thing I got a hatch. It's not a ideal hatch but still a hatch

[Villeza1]

Actually he was doing 53's on a burp. Did 150 - 151 on music in the low 30's. Loudest stock street trunk in the world lol

Impressive

[pro-rabbit]

All I need is a 150. Can't demo with a burp box

If you want that, then a simple "quick" enclosure won't cut it. You need buy 10-15 sheets of wood and get building/testing/rebuilding/testing and keep repeating and make sure to take very clear notes. Personally, I write on each enclosure I test with in a single car so I can know exactly what everything did.

My notes normally contain...

Year/Make/Model
What sub
How much power(actual clamp)
SPL
How it sounded
Any notes I felt needed to be wrote for a later date..like box position or loading issues...or what ever.

[DDtC]

Very impressive.

[pro-rabbit]

Well it's a good thing I got a hatch. It's not a ideal hatch but still a hatch

Any hatch is ideal once you figure out the proper loading.

[CAT MAN]

coming to collinsville?

[DDtC]

If you want that, then a simple "quick" enclosure won't cut it. You need buy 10-15 sheets of wood and get building/testing/rebuilding/testing and keep repeating and make sure to take very clear notes. Personally, I write on each enclosure I test with in a single car so I can know exactly what everything did.

My notes normally contain...

Year/Make/Model
What sub
How much power(actual clamp)
SPL
How it sounded
Any notes I felt needed to be wrote for a later date..like box position or loading issues...or what ever.

I get it but it's not simple or quick. You know how many boxes ive been through. I found out a few things along the way. Peak is always in the mid high 40s no matter where I tune after the deadener. Subs like to be up and toward the rear, port likes to be center. That's all I got right now

---------- Post added at 10:41 PM ---------- Previous post was at 10:41 PM ----------


coming to collinsville?

No.

[Villeza1]

I get it but it's not simple or quick. You know how many boxes ive been through. I found out a few things along the way. Peak is always in the mid high 40s no matter where I tune after the deadener. Subs like to be up and toward the rear, port likes to be center. That's all I got right now

Have you tested with different sized enclosures? Smaller, larger?

[DDtC]

Have you tested with different sized enclosures? Smaller, larger?

Within reason. Yes. Anything much bigger then 3 cubes bottoms out. Anything much less don't reach xmax

[pro-rabbit]

Have you tested with different sized enclosures? Smaller, larger?

port area alterations... internal or external ports..

subs/port up with it sealed off around the box(basic beauty panel just more rigid)....

Some times the stupidest things make the biggest differences.

---------- Post added at 09:47 PM ---------- Previous post was at 09:46 PM ----------


Within reason. Yes. Anything much bigger then 3 cubes bottoms out.

At what frequency is it bottoming out? Odds are that is user error.

[DDtC]

port area alterations... internal or external ports..

subs/port up with it sealed off around the box(basic beauty panel just more rigid)....

Some times the stupidest things make the biggest differences.

---------- Post added at 09:47 PM ---------- Previous post was at 09:46 PM ----------



At what frequency is it bottoming out? Odds are that is user error.

It was in the high 30hz range. Nothing low

[CAT MAN]

It was in the high 30hz range. Nothing low

shrink it to 2.4 for each same tuning and everything. watch your score.

[Villeza1]

port area alterations... internal or external ports..

subs/port up with it sealed off around the box(basic beauty panel just more rigid)....

Some times the stupidest things make the biggest differences.

Exactly, I was getting to that point but very slowly Lol.

[DDtC]

I know what everybody is saying. Thats why I decided to copy a proven design. I had to go a bit wider to give the motors clearance but the specs are almost identical. We also are doing it flush mount

26535767

[CAT MAN]

those are my subs lol

[DDtC]

those are my subs lol

Those are level 3s

[myjaja]

myjaja ;

You rang my lord?

[DbDesigns]

You rang my lord?

iirc you had 2 12s and a 10 inch aero that was loud... help op out dawg.

[myjaja]

iirc you had 2 12s and a 10 inch aero that was loud... help op out dawg.

I wouldnt mind helping but I doubt I can be much help. Ive only built two enclosures my whole life, and that was the second one I built. Im a complete novice when it comes to box building. lol

[DbDesigns]

I wouldnt mind helping but I doubt I can be much help. Ive only built two enclosures my whole life, and that was the second one I built. Im a complete novice when it comes to box building. lol

well you were doing 50s so you must know something lol

[myjaja]

well you were doing 50s so you must know something lol

Well, if I remember correctly, my enclosure was 36.5 x 17.5 x 22 and around 5.8-5.9 cu ft net and tuned to around 32-33 hz. Had a 10" diameter port that was 26.5 inches long. Almost the whole back end of my trunk was foamed up. lol

But that worked well for my subs, cant say the same for dc lvl 3's.

[CAT MAN]

his are xl m2 12s

[hispls]

iirc hispls ; made one that was tuned to 40, and wasn't thrilled about the fact it had a fairly flat response. he was shooting for a bit more of a "one-note-wonder"....
I think it had a giant square port though. And it was in a truck.

Really depends on the sub(s) how much peak you'll get by tuning how high. Some measurements show big box actually tunes @ 36hz with subs inverted and box in place. Lot of loading up and around the rear hatch I think.

I wouldn't be scared to tune @ 45-48hz trying to chase numbers.

[CAT MAN]

i still dont get how you have a hatch. 5k. good subs. low numbers? :confused:

[subzero]

I woulda done a swappable port, one tuned to 51hz and other tuned to 30hz.

[psych0ticnemes1]

Actually he was doing 53's on a burp. Did 150 - 151 on music in the low 30's. Loudest stock street trunk in the world lol

How much power?

[pro-rabbit]

I know what everybody is saying. Thats why I decided to copy a proven design. I had to go a bit wider to give the motors clearance but the specs are almost identical. We also are doing it flush mount

26535767

Unless it was "proven" in your car...it is not proven at all.

---------- Post added at 12:42 PM ---------- Previous post was at 12:41 PM ----------


i still dont get how you have a hatch. 5k. good subs. low numbers? :confused:

net volume..port area...tuning...loading.....

nothing working for him would be my guess.

[Kangaroux]

How much power?

Pair of DD M3a's I believe. The subs were custom built TRF's so they took the power without any trouble

[psych0ticnemes1]

Pair of DD M3a's I believe. The subs were custom built TRF's so they took the power without any trouble

Call me a newb but how much power is that? 4k+ or so?

[mazdakid]

That could be over 6k depending on load. Street stock limit is 2k watts.

[pro-rabbit]

Call me a newb but how much power is that? 4k+ or so?

M3's are a bit better then a AQ2200.....

[psych0ticnemes1]

M3's are a bit better then a AQ2200.....

Ah ok. I know they are $$$ too.

Btw, I think I've settled on sticking with an 18" when trying to enhance my low end. I'll just keep tweaking the box as necessary I guess. These Type Es are for entry level setups.

[DDtC]

i still dont get how you have a hatch. 5k. good subs. low numbers? :confused:

It's loud. Just not meter loud.

---------- Post added at 06:28 PM ---------- Previous post was at 06:28 PM ----------


Unless it was "proven" in your car...it is not proven at all.

---------- Post added at 12:42 PM ---------- Previous post was at 12:41 PM ----------



net volume..port area...tuning...loading.....

nothing working for him would be my guess.

That is my car. Just not my car

[pro-rabbit]

It's loud. Just not meter loud.

---------- Post added at 06:28 PM ---------- Previous post was at 06:28 PM ----------



That is my car. Just not my car



Loud but not meter loud is normally a tuning issue. Just tune higher.

[CAT MAN]

Loud but not meter loud is normally a tuning issue. Just tune higher.

ive had both :dontknow: this new one will be a non meter sutup tho. i wanna see how low these dc's can go. then ill go back to my meter stage since it is winter. usually like daily setups in the winter spl in the summer. :confused:

[JayDubb757]

Here's some pics of DCtC ; 's new box.



http://i50.tinypic.com/dcsg7r.jpg

http://i50.tinypic.com/344xshy.jpg

http://i48.tinypic.com/riro1f.jpg

http://i47.tinypic.com/2zi7ksp.jpg

http://i46.tinypic.com/2rc0rqw.jpg

[JayDubb757]

http://i46.tinypic.com/iz92q0.jpg

http://i49.tinypic.com/f3f1xz.jpg

http://i48.tinypic.com/23i9s3r.jpg

http://i45.tinypic.com/359lu95.jpg

http://i46.tinypic.com/6rj87c.jpg

[rebelfromva]

Nice

[CAT MAN]

jeff is the man

[JayDubb757]

jeff is the man

Did you get the trim rings yet?

[DDtC]

Loud but not meter loud is normally a tuning issue. Just tune higher.

I wanted to move air and hit in the 20s. I got that now I want a score

[CAT MAN]

Did you get the trim rings yet?
did today they look good. im going to sand them anf put them together. i have an idea i want to pursue.

I wanted to move air and hit in the 20s. I got that now I want a scoremeh

[DDtC]

did today they look good. im going to sand them anf put them together. i have an idea i want to pursue.
meh

It blends with a high end front stage. Don't be mad

[pro-rabbit]

I wanted to move air and hit in the 20s. I got that now I want a score

With everything there has to be sacrifices. Just part of the game.

[dbeez]

Results

[kushy_dreams]

This is kind of a stupid question but how does the port attach and is it removable to allow for other tunes?

[DDtC]

Results

Its not done yet, wont get to meter till next week. I need a sealed and headrest score

[DDtC]

This is kind of a stupid question but how does the port attach and is it removable to allow for other tunes?

It is. JayDubb757 ; Jeff can explain it. It can go as high as 45 and low as 33.

[JayDubb757]

Finished the box up.
Here's some pics.


http://i50.tinypic.com/1eqmpj.jpg

http://i48.tinypic.com/23sjkev.jpg

http://i45.tinypic.com/b4uc0g.jpg

http://i46.tinypic.com/27zg490.jpg

[JayDubb757]

Moar pics



http://i46.tinypic.com/20qddmr.jpg

http://i47.tinypic.com/2napdsj.jpg

http://i47.tinypic.com/1zcmsnb.jpg

http://i47.tinypic.com/24pyqdg.jpg

[kushy_dreams]

Its hard to not laugh when looking at octoport boxes because it always looks like a butthole

Very nice craftsmanship on the box, I hope it sounds as good as it looks

[CAT MAN]

Its hard to not laugh when looking at octoport boxes because it always looks like a butthole

Very nice craftsmanship on the box, I hope it sounds as good as it looks
it should. Derek shoulda tuned higher tho. his car peaks int eh 50s iirc

[DDtC]

it should. Derek shoulda tuned higher tho. his car peaks int eh 50s iirc

It's normally in the mid 40s.

[JayDubb757]

2 DC Audio XL M2 12's on a DC audio 5k - YouTube (http://www.youtube.com/watch?v=gvkqaiJM6zk&feature=g-all-c//)

[CAT MAN]

2 DC Audio XL M2 12's on a DC audio 5k - YouTube (http://www.youtube.com/watch?v=gvkqaiJM6zk&feature=g-all-c//)

still has alot more in it. i thought he tuned for spl. didnt realize it was 38hz.

[DDtC]

still has alot more in it. i thought he tuned for spl. didnt realize it was 38hz.

You're not loud. Don't talk till you are.

[pro-rabbit]

You're not loud. Don't talk till you are.

I'm not loud :crap: