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View Full Version : Interchangable Port Box- Round 2



bjfish11
09-05-2007, 07:08 PM
Chris has done it again. Another bad *** design. BUT!!!, the customer wanted to go one step farther. This will not have two ports, but THREE!. 30, 35, and 40hz. This box will be left bare.

Wont get started on it tonight. Need to get the cutsheet all figured out, as well as a little more paperwork that will go along with this. Tomorrow night is the plan to get rolling on this one, but to tempt you guys a little.....

http://i171.photobucket.com/albums/u282/bjfish11/Design-2.jpg

Pimpdaddyq
09-05-2007, 07:12 PM
very cool design.. I think its a great idea how you are doing it.. ive always wondered what are good ways to do that.. good luck!

Andrew

spike_e
09-05-2007, 07:12 PM
**** that nice

BMW Sidewayz
09-05-2007, 07:14 PM
Great idea. I've never heard or seen such enclosure. I know of some that go from sealed to ported, but not freq adjustments. I'll be checking back to see the progress. :D

docutech
09-05-2007, 07:14 PM
Thats crazzy!

I really want to read a review of this box!

bjfish11
09-05-2007, 07:15 PM
Thanks guys. IonSQL's design skills are nuts! Ill definitely post up quite a few pics of this one.

IonSQL
09-05-2007, 07:16 PM
:) Looking forward to the build pics

tapout
09-05-2007, 07:23 PM
subscribed.

InhumanAcura
09-05-2007, 07:26 PM
theres a way to do it, that way will look much cleaner..if executed correctly, you cant tell its interchangable....and there really isnt any need for the actual opening of the box to be so large.

bjfish11
09-05-2007, 07:40 PM
Well considering the box of port 1 will be 12" wide and 13.5" tall, yes the opening does have to be that large. It only has a half inch of play...

InhumanAcura
09-05-2007, 07:54 PM
Well considering the box of port 1 will be 12" wide and 13.5" tall, yes the opening does have to be that large. It only has a half inch of play...

none of the port openings are 12" wide in that drawing..dont really understand why your making little boxes for the ports.

bjfish11
09-05-2007, 08:02 PM
2 of the ports arent typical L shape ports, hence the need for a wide box, to get the correct length.

InhumanAcura
09-05-2007, 08:06 PM
2 of the ports arent typical L shape ports, hence the need for a wide box, to get the correct length.

you dont need that large of an opening just because the port bends..you shouldnt have to make it but a few inches wider than the widest port at the most..I made a bunch of these a few years back, a few for people on here. Ill try to find some pics

bjfish11
09-05-2007, 08:08 PM
I guess Im not following you.... but there is no wasted space inside of the ports. Maybe Chris will step in, all this design stuff is over my head lol

IonSQL
09-05-2007, 09:25 PM
I'm definitely interested to see a method to fit a 30-something inch long port into a 4" opening, because I couldn't find a much better way to do it...

I think we can agree though that there is no one right way to do these.... and this way works. This will be the 5th or 6th one I've done similar to this, and so far everyone has been extremely pleased with the results.

IgnoreMe
09-05-2007, 10:56 PM
quick question. how is the port "box" sealed? do you just use some weather stripping and some t-nuts on the perimeter to make it airtight?

IonSQL
09-06-2007, 12:03 AM
yup, that's pretty much it...

Intrepid Bass
09-06-2007, 09:15 AM
Wow, gonna be eyeballing this one. :)

bjfish11
09-06-2007, 07:05 PM
Not going to get around to starting tonight like I had hoped. Battling some allergies atm, and right now, they are kicking my ***... :(

Mr Cabinetry
09-06-2007, 07:12 PM
Great idea. I've never heard or seen such enclosure. I know of some that go from sealed to ported, but not freq adjustments. I'll be checking back to see the progress. :D

Interchangeable ports is nothing new, I've been designing and building them for past couple of years.

THUMPPER
09-06-2007, 08:34 PM
I had changable tunning on my last system but I did
mine with an add on peice of port
the inner volume of the enclosure was not effected
by the add on peice so changing the tunning had no
effect on the inner cf3

tim0shel
09-06-2007, 08:57 PM
In my current one i have done aero ports to be changed out for spl to daily. I have them the two mounted on a board with weather stripping and some nuts like T nuts that i bolt the board to the box with the ports in it when i want to change freq.

mazdakid
09-06-2007, 09:08 PM
cool

Mr Cabinetry
09-06-2007, 09:11 PM
Designing an enclosure with interchangeable is nothing more than a balancing act depending on what the design function is based on what the end results are to achieve given the specifications that are being " held to".

So, the design is going to be held to:

No Change in Net Volume which means that the design has to adhere to the ports displacing the same volume regardless of which port is used and the trade off is the SPL Port will have a larger Surface while the SQ port will have a smaller surface area respective to each ports lengths.

This means the SQ port will have port noise given the same power level that would be applied to the SPL Port.

OR

Based on the design presented, the net volume is not at a constant relative to the ports as designed meaning the bass response as to the acoustical frequency range will vary greatly requiring different systems settings each time the ports are changed unless the user doesn't particularly care about it in the first place.

As we all know, depending on volume, port tune and port area raises or lowers both the F3 of the sub/ enclosure port tuning db point.

bigbang
09-06-2007, 10:23 PM
Might as well add a flat panel to be able to turn it into a sealed cabinet for shits and giggles. I really like the design though. Cant wait to see pics.

twisztdauthorit
09-06-2007, 10:30 PM
I like the idea of interchangeable ports even though its been around for a while. Seems like a very sturdy design, i would like to try one myself one day. Im building a box for a friend soon but i dont think we have enough space nor wood =(

Goodluck with your build... ill definitely be watching this

Airman21
09-06-2007, 10:39 PM
steve meade uses interchangable ports also.. very kool design i will also keep a eye on this one... good luck

bjfish11
09-07-2007, 07:21 AM
Just for the record, Neither Chris or I claim to be the first one to do this. ;) I just thought it would be a cool build log, so I decided to post it.

Fattony911
09-07-2007, 04:51 PM
In my current one i have done aero ports to be changed out for spl to daily. I have them the two mounted on a board with weather stripping and some nuts like T nuts that i bolt the board to the box with the ports in it when i want to change freq.

pics? that swounds sick

grassroots
09-07-2007, 04:57 PM
ionsql designed the last box i had for my mt18 with swappable ports.... i didn't even use any weather stripping... just screws and it worked great...

bjfish11
09-11-2007, 08:38 PM
I am back from the dead fellas. J/K. I have gotten over my cold and have finally begun on this beast. All the panels are cut, and assembly will begin tomorrow night. Pics:

http://i171.photobucket.com/albums/u282/bjfish11/PoloCarillo001.jpg
http://i171.photobucket.com/albums/u282/bjfish11/PoloCarillo002.jpg
http://i171.photobucket.com/albums/u282/bjfish11/PoloCarillo003.jpg
http://i171.photobucket.com/albums/u282/bjfish11/PoloCarillo004.jpg
http://i171.photobucket.com/albums/u282/bjfish11/PoloCarillo005.jpg
http://i171.photobucket.com/albums/u282/bjfish11/PoloCarillo006.jpg
http://i171.photobucket.com/albums/u282/bjfish11/PoloCarillo007.jpg
http://i171.photobucket.com/albums/u282/bjfish11/PoloCarillo008.jpg

SkronnyLonny
09-11-2007, 08:43 PM
looks like fun

Max_Power
09-11-2007, 08:50 PM
**** cuts. great design.

OoMesKoO
09-11-2007, 08:53 PM
**** that looks like a PITA.

bjfish11
09-11-2007, 10:27 PM
Thanks guys.
It really shouldnt be too tough of a build. Time consuming, but not overly challenging. But the end product should be pretty pimpin'.

dleccord
09-12-2007, 05:18 AM
wished i had a shop like that. them are some clean *** cuts

Fattony911
09-12-2007, 08:27 AM
looks fun ;)

IamDeMan
09-12-2007, 08:54 AM
That's a lot of wood. That ***** gonna be heavy fo sho!

meade916
09-12-2007, 02:47 PM
**** cuts. great design.


x2 very sexxy cuts bro :D

nbudros
09-12-2007, 02:55 PM
Hot.... nice cuts...

bjfish11
09-12-2007, 07:31 PM
Thanks a lot guys for all the compliments. Thats what makes it soooo easy to keep on building.

W8 a minute
09-12-2007, 10:29 PM
Trupan?

nismos14
09-12-2007, 10:56 PM
IB aw fck it just make it sealed.

LOL.

Nice so far.

BassAddictJ
09-13-2007, 03:22 AM
**** balls that looks nice. keep us posted.

whats the volume going to be?

PV Audio
09-13-2007, 07:49 AM
Pics mother****er, do you have them?

Lakota
09-13-2007, 12:05 PM
**** I wish I had the equipment you have.

bjfish11
09-13-2007, 10:04 PM
Trupan?
Yep, trupan, like always.


IB aw fck it just make it sealed.

LOL.

Nice so far.
LOL, thanks.


**** balls that looks nice. keep us posted.

whats the volume going to be?
Ill keep it posted. As far as volumes... hopefully Chris will check in with that info.


Pics mother****er, do you have them?
No more pics. Havent had time to work on it again. Hoping to finish it this weekend tho...

**** I wish I had the equipment you have.
I would probably rent out some space for you, lol.

bjfish11
09-13-2007, 10:10 PM
Just realized, PV, when the **** did you get back?

yama168
09-14-2007, 03:44 PM
bump for great box builder nice work


Aloha

AudioXtremes
09-16-2007, 06:22 PM
Its tha freakin weekend where are the pics?

bjfish11
09-17-2007, 10:34 PM
Finally an update.... Ports are built, except for the fronts on them. Want to drill all the holes before I attach them. I have the day off tomorrow, so I am hoping tomorrow afternoon to get a big chunk of this one taken care of. Here are the pics from tonight.

http://i171.photobucket.com/albums/u282/bjfish11/PoloCarrillo001.jpg
http://i171.photobucket.com/albums/u282/bjfish11/PoloCarrillo002.jpg
http://i171.photobucket.com/albums/u282/bjfish11/PoloCarrillo003.jpg
http://i171.photobucket.com/albums/u282/bjfish11/PoloCarrillo004.jpg
http://i171.photobucket.com/albums/u282/bjfish11/PoloCarrillo005.jpg
http://i171.photobucket.com/albums/u282/bjfish11/PoloCarrillo006.jpg

bjfish11
09-17-2007, 10:35 PM
http://i171.photobucket.com/albums/u282/bjfish11/PoloCarrillo007.jpg
http://i171.photobucket.com/albums/u282/bjfish11/PoloCarrillo008.jpg
http://i171.photobucket.com/albums/u282/bjfish11/PoloCarrillo009.jpg
http://i171.photobucket.com/albums/u282/bjfish11/PoloCarrillo010.jpg
http://i171.photobucket.com/albums/u282/bjfish11/PoloCarrillo011.jpg

docutech
09-17-2007, 10:38 PM
Holly bajeeezus thats a nice looking piece.

You have some madd skillz yo!

docutech
09-17-2007, 10:46 PM
Chris, is this going to be your box? If so, I will drive to hear this!!

IonSQL
09-17-2007, 10:47 PM
nope, not mine, though I'd love to hear it as well :)

bjfish11
09-17-2007, 10:52 PM
Thanks docutech. I really appreciate the compliment. Tomorrow, I should have up some more pics...

bjfish11
09-18-2007, 06:37 PM
http://i171.photobucket.com/albums/u282/bjfish11/PoloCarrillo012.jpg
http://i171.photobucket.com/albums/u282/bjfish11/PoloCarrillo013.jpg
http://i171.photobucket.com/albums/u282/bjfish11/PoloCarrillo014.jpg
http://i171.photobucket.com/albums/u282/bjfish11/PoloCarrillo015.jpg
http://i171.photobucket.com/albums/u282/bjfish11/PoloCarrillo016.jpg
http://i171.photobucket.com/albums/u282/bjfish11/PoloCarrillo017.jpg
http://i171.photobucket.com/albums/u282/bjfish11/PoloCarrillo018.jpg
http://i171.photobucket.com/albums/u282/bjfish11/PoloCarrillo019.jpg
http://i171.photobucket.com/albums/u282/bjfish11/PoloCarrillo020.jpg
http://i171.photobucket.com/albums/u282/bjfish11/PoloCarrillo021.jpg

bjfish11
09-18-2007, 06:40 PM
http://i171.photobucket.com/albums/u282/bjfish11/PoloCarrillo022.jpg
http://i171.photobucket.com/albums/u282/bjfish11/PoloCarrillo023.jpg
http://i171.photobucket.com/albums/u282/bjfish11/PoloCarrillo024.jpg
http://i171.photobucket.com/albums/u282/bjfish11/PoloCarrillo025.jpg
http://i171.photobucket.com/albums/u282/bjfish11/PoloCarrillo026.jpg
http://i171.photobucket.com/albums/u282/bjfish11/PoloCarrillo027.jpg
http://i171.photobucket.com/albums/u282/bjfish11/PoloCarrillo028.jpg
http://i171.photobucket.com/albums/u282/bjfish11/PoloCarrillo029.jpg
http://i171.photobucket.com/albums/u282/bjfish11/PoloCarrillo030.jpg
http://i171.photobucket.com/albums/u282/bjfish11/PoloCarrillo031.jpg

SkatinBassPLaya
09-18-2007, 06:47 PM
holy ****!

wtf is that!

pure ingenuity.:yumyum:

quakerroatmeal
09-19-2007, 02:24 AM
So pretty, your work always seems so flawless, what do you do to keep it so flawless. It's like a robot cutting all the pieces and attaching it together, no mistakes at all. Looks sick! I like the plexi logo on top.

dleccord
09-19-2007, 02:31 AM
http://i171.photobucket.com/albums/u282/bjfish11/PoloCarrillo026.jpg

what are these called?

bjfish11
09-19-2007, 07:23 AM
So pretty, your work always seems so flawless, what do you do to keep it so flawless. It's like a robot cutting all the pieces and attaching it together, no mistakes at all. Looks sick! I like the plexi logo on top.

Thanks man. I really appreciate it. Basically, it just comes down to a lot of practice and patience.


http://i171.photobucket.com/albums/u282/bjfish11/PoloCarrillo026.jpg

what are these called?

The are called threaded wood inserts IIRC. They are much better than T-Nuts in my opinion. I always have bad luck with T Nuts not staying in the wood. These things work so awesome.

Fattony911
09-19-2007, 11:04 AM
is this the finsihed prduct or can we expect carpet. i think bare is ****, lookin good

meade916
09-19-2007, 11:13 AM
**** bro you have MAD SKILLS....that is so got-dam sweet, i love it man!!

PV Audio
09-19-2007, 11:22 AM
Just realized, PV, when the **** did you get back?About a week ago :D

bigbang
09-19-2007, 02:01 PM
Humm, threaded wood inserts, dont have to go all the way through the baffle like a T-nut, therefore will stay airtight. Good to bring a great idea to light :graduate:. Thanks guys.

dleccord
09-19-2007, 05:39 PM
threaded wood inserts: they should be at a local home improvements store, right?

bjfish11
09-19-2007, 07:38 PM
FatTony, yep thats the finished product. He actually had be add a second panel to the back. He is mounting a large amp back there and wanted the extra strength, but no carpet on this one.

Thanks Meade... LOL, if you ever need a box, hit me up. ;)

Good to see you back PV.

BigBang, Chris actually gave me the idea to use these, too bad I cant take credit, but yes, they work awesome.

Dleccord, I have purchased them at Lowes before I believe, so you should be able to find them almost anywhere.

Immacomputer
09-19-2007, 09:50 PM
Absolutely beautiful construction. Good job man.

406er
09-19-2007, 11:38 PM
holly crap, that is a MDF masterpeace. im very impressed yet again

electropro
09-20-2007, 01:01 AM
Humm, threaded wood inserts, dont have to go all the way through the baffle like a T-nut, therefore will stay airtight. Good to bring a great idea to light :graduate:. Thanks guys.


I have used threaded wood inserts before, mine were made of brass though, came from Ace Hardware. They were through-bolt...Might consider some non permanent thread lock compound if your worried about air. Will help keep bolts from loosening with vibrations over time. I like them better than t-nuts also.:fro:

They were just like those, but different!

meade916
09-20-2007, 01:42 PM
Thanks Meade... LOL, if you ever need a box, hit me up. ;)

.

w3rd up man! I do my own stuff but i wouldnt be ashamed to have some of your skills sprinkled somewhere around my house :D

alxmlr789
09-20-2007, 01:46 PM
holly crap, that is a MDF masterpeace. im very impressed yet again



He uses trupan light :fyi:

bjfish11
09-20-2007, 05:05 PM
w3rd up man! I do my own stuff but i wouldnt be ashamed to have some of your skills sprinkled somewhere around my house :D
I knew you did your own work, just kinda joking. ;) BUT, if you ever wanted some work done, you know where to find me...


He uses trupan light :fyi:
LOL

Max_Power
09-20-2007, 05:11 PM
I'm not impressed.........NOT!!

Looks great.. I was wondering if the "port inserts" rattled because they were off the bottom of the box a bit?

How did you seal the "port insert" to the box?

alxmlr789
09-20-2007, 05:13 PM
I knew you did your own work, just kinda joking. ;) BUT, if you ever wanted some work done, you know where to find me...


LOL

Dont you?

bjfish11
09-20-2007, 05:15 PM
The ports more than likely will no rattle. There is actually a support piece under the bottom of the inserts, and once mounted in, those things arent going anywhere. As far as sealing, shouldnt need anything because of the tightness you can get the screws, but you could always add some foam tape between the front port piece and the area it mounts to.

bjfish11
09-20-2007, 05:16 PM
Dont you?

Oh yea, I do. I just thought it was funny you pointed it out. :D

CaliforniabOY5
09-20-2007, 05:21 PM
interesting.

spoonraker
09-20-2007, 05:59 PM
Your builds never cease to amaze me. The precision and accuracy of your cuts and router work is just absolutely amazing. There are tons of box build logs on here, but yours always stand out even on the simplest designs, excellent work once again.

bjfish11
09-20-2007, 07:21 PM
Thanks a lot man. I really appreciate it ;)

alxmlr789
09-20-2007, 07:24 PM
Same goes for me, as youve done three of my builds. lol. how you do it, i know not.

bibby
09-20-2007, 07:30 PM
that box is ****ing ****** bro!

bjfish11
09-20-2007, 07:46 PM
Same goes for me, as youve done three of my builds. lol. how you do it, i know not.

I guess it gets pretty easy after awhile. Kind of just get in a routine, LOL.



that box is ****ing ****** bro!

Thanks a lot man. I wish I was in to competing and stuff, a setup like this sure would be pretty sweet.

oxsign
12-29-2007, 10:46 AM
Sorry to bring up an old thread, but I was wondering if anyone ever got to hear what it sounded like with all 3 ports?

bjfish11
12-31-2007, 12:23 PM
Im not sure, I never heard from him. Last I did hear, he was having a hard time getting the sub from the guy...

bumpincrv
12-31-2007, 12:31 PM
more pics on those threaded inserts? how do they work? work well?

bjfish11
12-31-2007, 12:33 PM
Basically you drill a hole, and they screw into the material. They work awesome. I dont have anymore, so I cant take pics, but I bet if you googled them, you can find some info...

bumpincrv
12-31-2007, 12:36 PM
Basically you drill a hole, and they screw into the material. They work awesome. I dont have anymore, so I cant take pics, but I bet if you googled them, you can find some info...

well thanks, what do you think about using them to hold in a sub? Stable enough?

lilmaniac2
12-31-2007, 12:38 PM
I wish I could make boxes half as nice lol

bumpincrv
12-31-2007, 12:40 PM
I wish I could make boxes half as nice lol

X2

bjfish11
12-31-2007, 12:45 PM
well thanks, what do you think about using them to hold in a sub? Stable enough?

I think they would work fine. They are much better than T-nuts, and I see people using them all the time.


I wish I could make boxes half as nice lol

Thanks man :)

denali804
01-19-2008, 11:50 PM
How much would a box like this cost for a single 18

tapout
01-20-2008, 12:04 AM
I dont know how I missed this...

I just nutted a little. :crap:

bjfish11
01-20-2008, 12:04 PM
How much would a box like this cost for a single 18

PM has been sent.


I dont know how I missed this...

I just nutted a little. :crap:

Grab a rag.... clean that up man! ;) LOL