The do's and dont''s of my first wall....it seems like something isn't right....

A port isn't a giant hole that gets tighter as it gets smaller, it's a column of air that resonates in sympathy with the cone around tuning. It acts like another woofer in phase.



I was not implying that a piston and port operate in a identical manner. I was just using it as a reference for op in a was saying there needs to be pressure in the box. @buick66 that looks really good. Sorry for being dickish it's just most people here will have like 3 posts and just start thinking in they are the greatest thing to ever happen to this site and then have like a pioneer 12 on like 500watts yet give advice on walls or thousands of watts systems. @buick66 I'm salt at your wood working skills lol. Anything mechanically I can repair but for some reason wood working is just not my thing
 
Lol....i noticed the major lag on my phone as well.....ok hispls I wasn't sure about the foam. And i do plan on shaving the excess off tomorrow. It bugs me way to much to leave it like that ....and i knew i would get some good responses from the roofing tape lol...i was actually anxious to read them. Yes slo_ride your right! Better than nothing lmao. And because i cant afford deadner because that shi t is expensive! And i figured what the hell i might as well try it lol. If it works, that's great!....if it doesn't....i have learned something new today! Ha. Nah i was hoping it would help with deadening the sound from the tires since i took the interior out. I got a few rolls from a friend for free so I'm not losing out on anything besides the awaited humiliation! Lol. Fiberglassing the inside sounds like a plan, I enjoy Fiberglassing!

And on a side note about the cherokee... I used to have a 96 jeep grand cherokee with the inline 6, pearl white with 15" American racing rims on 31's, the interior was emaculant. Well worth the money, it was one of the most dependable vehicles I've owned. I had three 15" kicker comps in a prefab sealed box on a Kenwood 2000 watt class d amp, redtop under the hood, one 0 gauge power wire, and a 3 foot piece for the ground wire. An alpine 9886, and some alpine 6.5's on some 300 watt amp i think. Oh and stock alternator. It was pretty fuc king loud! I remember i would have to turn it down halfway through mims move it because i couldn't breathe or see anything in front of me. Never got it metered though because no shops around here had a mic besides this one in kansas city and they wouldn't let you meter unless you had something they thought was worthy enough for the meter...anyways just wanted to share that lol.
We've linked enough build logs so you can see what insides want to look like. Rigid, airtight, smooth is optional if you're just playing music, but foam is too soft, good to sculpt up a shape to lay some glass over, adequate to seal off between the box and the vehicle.

My last 97 Grand Cherokee got louder way easier than my current one, definitely both have proved very low maintenance.

29 ? I thought you were a young pup ? I dont know why I thought it ...
Because how impatient he is. He must have been terrifying at 16-21.

 
Sorry for being dickish it's just most people here will have like 3 posts and just start thinking in they are the greatest thing to ever happen to this site and then have like a pioneer 12 on like 500watts yet give advice on walls or thousands of watts systems.
I'm not one of those guys who makes things up. I've done a lot myself (most of my advice here is learned from my own trial and error) and I go to a lot of shows and learn from guys with proven track records.

Look at the video of the black Jeep I posted, having a big port is not the problem. Worst case scenario "too big" port just results in one note wonder that will at least be crazy loud at peak. I've also posted a couple pics of how to quickly change port size. Ditto with "too big" box can easily be shrunk. Both are fast and easy to make smaller on the fly but nearly impossible to make larger.

 
A large port could not work properly only if you can't move the woofers to properly pressurize the port

I had a huge port tuned to 45hz in my old car

On 5k it got loud, on 1k very quiet. until I shrunk the port and extended it to make it actually usable

It's coming along though seal it all up and it should start sounding louder

 
Haha hispls yes it was terrifying at 16-21 lmao....I been to a few shows since i got into car audio....i was always to nervous to walk up to people and ask them about there stereo or equipment they were running etc.....I'm really quiet and keep to myself until i get to know you....in person that is lol....and yes hispls you and a few others have most definitely provided me with more than enough references and I really appreciate that!....I'm going to glass the seems and I'm gonna go ahead and round off the corners since I'm fiberglassing them....its not like it can hurt anything you know? I will update you guys here in a few with a bunch of pictures of my progress! Again thank you all for helping me through this! I'd be lost without your knowledge and encouragement!!!

 
Haha hispls yes it was terrifying at 16-21 lmao....I been to a few shows since i got into car audio....i was always to nervous to walk up to people and ask them about there stereo or equipment they were running etc.....I'm really quiet and keep to myself until i get to know you....in person that is lol....and yes hispls you and a few others have most definitely provided me with more than enough references and I really appreciate that!....I'm going to glass the seems and I'm gonna go ahead and round off the corners since I'm fiberglassing them....its not like it can hurt anything you know? I will update you guys here in a few with a bunch of pictures of my progress! Again thank you all for helping me through this! I'd be lost without your knowledge and encouragement!!!
For your goals rounding corners won't do much more than sealing and reinforcing... both good ideas though. If your calculations on volume were correct you can spare to lose some volume too unless your subs are super stiff. Seal, brace, test, then you can see what needs doing.

Relax, take breaks to take pictures and have snacks/drinks.

 
Yeah i decided to say fuuck rounding the corners lol....to much work and not worth it....and I'm not going to use fiberglass or bondo.....I'm going to try using the roofing tape and do like three layers over each seam and then heat it up so the tar bonds to the wood. It's actually pretty stiff when you use multiple layers of it

 
I'm not one of those guys who makes things up. I've done a lot myself (most of my advice here is learned from my own trial and error) and I go to a lot of shows and learn from guys with proven track records.
Look at the video of the black Jeep I posted, having a big port is not the problem. Worst case scenario "too big" port just results in one note wonder that will at least be crazy loud at peak. I've also posted a couple pics of how to quickly change port size. Ditto with "too big" box can easily be shrunk. Both are fast and easy to make smaller on the fly but nearly impossible to make larger.




Wasn't meaning you at all sir. Mean that take advice form you guys that know what your doing. When someone has like 4 posts and is bashing someone's build more or less. No Ill intent at all?

 
Activity
No one is currently typing a reply...
Old Thread: Please note, there have been no replies in this thread for over 3 years!
Content in this thread may no longer be relevant.
Perhaps it would be better to start a new thread instead.

About this thread

ferguson621

Senior VIP Member
Thread starter
ferguson621
Joined
Location
Olathe, ks
Start date
Participants
Who Replied
Replies
1,012
Views
72,481
Last reply date
Last reply from
Papermaker85
IMG_20260506_140749.jpg

74eldiablo

    May 22, 2026
  • 0
  • 0
design.jpeg

WNCTracker

    May 22, 2026
  • 0
  • 0

New threads

Top