Maze port box design

[Frito11 10+ year member]

Looking for opinions on how this design will perform from people who have tried it before. i've done a 2 wall maze ported box like this before but never with this long of a port.

details are its for a 12" fosgate P2 (new one) and its specs are 1.79 cu ft internal volume (after taking displacement of driver and port got all that down.

port is tuned to 33 hz

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[T.I.K. 10+ year member]

you should definitely add 45's to all those corners to keep the port width constant and prevent dead spots in the ports, i'd also round over all the inside edges

 

[Buck 5,000+ posts]

What are your goals with the box? What "sound" are you trying to reproduce?

 

[benzmansl65amg 10+ year member]

transmission line fyi

 

[Buck 5,000+ posts]

And move the woofer all the way to the left side of the box.

 

[BlactimusCrime 10+ year member]

And move the woofer all the way to the left side of the box.

I agree, as is, the sub will probably unload into the port

 

[Buck 5,000+ posts]

If this is too much to handle you can always hit me up!

You know, just throwing that out there...

 

[RAM_Designs 5,000+ posts]

45 every port corner and round-over every inside turn in that port. Also move the sub all the way to the left to keep it as far away from he interior port opening as possible. Why not run the port down the back wall? Mounting depth?

 

[Frito11 10+ year member]

you should definitely add 45's to all those corners to keep the port width constant and prevent dead spots in the ports, i'd also round over all the inside edges

good idea will do

What are your goals with the box? What "sound" are you trying to reproduce?

trying to get soild mid 30hz bass to 60hz mainly. the woofers currently in a cheap prefab ported box (1.8 cu ft , 40hz slot port) and it sounds very good but i think it could use more low end, i know its just a 12 but bringing the tuning freq down will help. i have modeled it in winisd and bass box pro vs the existing box and the response curves are pretty good on both pretty much identical except this one brings the peak down to the 35hz range instead of 42 hz ish.

transmission line fyi

isn't a transmission line box where the port gets larger as it get to the end of the port?

And move the woofer all the way to the left side of the box.

you think that would effect the sound positively?

 

[Frito11 10+ year member]

45 every port corner and round-over every inside turn in that port. Also move the sub all the way to the left to keep it as far away from he interior port opening as possible. Why not run the port down the back wall? Mounting depth?

I could do that, mounting depth is not a problem, i heard/read somewhere that doing a maze like this will prevent higher frequency's from going out of the port, not sure how much truth there is to that but i figured why not try it.

i did a box for a T1 12" that had only 1 360 degree turn in the port and it sounded pretty good. i'm not sure about having 3 like i do in this design though.

 

[RAM_Designs 5,000+ posts]

I'd just do a simple L port along the back wall, or U port if you need to...cuts down on port drag by having less turns.

 

[Buck 5,000+ posts]

I'd just do a simple L port along the back wall, or U port if you need to...cuts down on port drag by having less turns.

Depends on what kind of music he listens to though. Just depends. Sometimes I like to use S and U ports to my advantage.

 

[benzmansl65amg 10+ year member]

box face-off!!!!

 

[Frito11 10+ year member]

Depends on what kind of music he listens to though. Just depends. Sometimes I like to use S and U ports to my advantage.

listen to a bit of everthing but when it comes to how my sub sounds it usually rap, dnb, etc music.

 

[Frito11 10+ year member]

ok revised my design to have an L port. due to space constraints that means tuning freq went up to 36.5 hz vs the previous maze design having a tuning of 33hz.

i suppose if i made the port a U i could get it closer to 33hz but 36 is probably low enough esp for this sub.

also the height of the box is not shown but its 18-5/8"

i also probably need to add some braces between the back wall and the port and maybe a 45 at the back left corner

what do you guys think?

here is the predicted response curve with cabin gain predicted as well