port help?

  • 2
    Participant count
  • Participants list
ok i recently did a new build in my suburban with 4 OA 18's. the box is perfectly sized at 21^3ft i believe and the port is tuned at 32 hz. im having to problems here tho. the first is that because of my battery bank i have in front of the box, the box itself had to be scooted very close to the tailgate. as in the face of the box is like 2 inches from the tailgate at best. to counter this we "recessed" the port in on the face of the box in a flare of sorts so its more or less 8-10" off the tailgate giving it some breathing room. now the port itself is 703^3in. to me this almost seems to small for the 4 18s but when i have it playing you can stick your hand in the box and hardly if at all feel a breeze but pull it out and into the port and its a hurricane which leads me to believe we have perfect airflow in the box itself. yet i still feel like its being "cut off" and not unleashed to full potential. i should be able to do some nasty hair tricks with 4 18s rights? i mean i can do one now but id hardly call it a hair trick. granted the whole systems running off of a single brz 2400 right now (saving for a DD M4a) i still feel like it should do more. perhaps my expectations are to high but ill leave that for better minds to decipher.

for what its worth, i took the truck to a competition and put it on the meter with a mojo 4k at 1 ohm (12v system). at the time, my back liftgate window was busted out and covered with plastic and duct tape instead. it still did a 145 at 38hz. idk if that helps or not but my mind is racing here.

Big thanks in advance guys!

-Blake

 
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.

Similar threads

I'd have the internal port end 7" away from the back wall and just roundover that corner. That back (rounded) wall should effectively extend the...
3
1K
None so far, there was a factory 8 inch subwoofer that I took out for a pass through, I'm definitely going to have to get some sound deadening...
10
2K
Yes. I do not fully understand the question, but if the manufacturer suggests such a big port, it is probably because it has a high QTS. If it...
3
1K
Yeah, saw that too, was like ??? wtf! They do know there stuff, I usually just roll with it!
13
827
You could try to make the port longer, but there might be other reasons with the box won't extend lower, or even the sub. You'd have to reverse...
3
500

About this thread

casey_anthony

Junior Member
Thread starter
casey_anthony
Joined
Location
United States
Start date
Participants
Who Replied
Replies
1
Views
571
Last reply date
Last reply from
mylows10
1000006564.jpg

Mr FaceCaser

    Mar 28, 2024
  • 0
  • 0
1000006569.jpg

Mr FaceCaser

    Mar 28, 2024
  • 0
  • 0

Latest topics

Top