Closed Thread
Results 1 to 10 of 10

Reload Thread: Placement of Sub and port for best response.

  1. #1
    AxT4430's Avatar
    AxT4430 is offline CarAudio.com Elite



    Join Date
    Aug 2012
    Location
    Akron, OH
    Age
    24
    Posts
    848
    Post Thanks / Like
    Mentioned
    6 Post(s)

    Placement of Sub and port for best response.

    First, Response is subjectively defined by me as audibly louder to my ear with clarity.

    Next, I have a honda civic 4 door. My sub and port face backwards at the trunk hatch. I have the hatch deadened, its a flat surface.

    Will I theoretically experience better response facing the sub/port forward or sub/port backwards facing. Assuming seats up or down for both.

    My subwoofer is a 15", it has a few inches between the top of box and bottom of trunk lid. Its about as wide as trunk as well.







  2. #2
    AxT4430's Avatar
    AxT4430 is offline CarAudio.com Elite

    Threadstarter


    Join Date
    Aug 2012
    Location
    Akron, OH
    Age
    24
    Posts
    848
    Post Thanks / Like
    Mentioned
    6 Post(s)

    Re: Placement of Sub and port for best response.

    Bump.. @pro-rabbit ; can you move this to general or advanced spl subforum?




  3. #3
    NASTY08IMPALA's Avatar
    NASTY08IMPALA is offline CarAudio.com Veteran



    Join Date
    Aug 2012
    Location
    LOUISVILLE, KENTUCKY
    Posts
    5,266
    Post Thanks / Like
    Mentioned
    43 Post(s)

    Re: Placement of Sub and port for best response.

    sub and port back is generally the loudest unless u face forward and seal off another good option is sub forward port to side firing off the quarter panel




  4. #4
    AxT4430's Avatar
    AxT4430 is offline CarAudio.com Elite

    Threadstarter


    Join Date
    Aug 2012
    Location
    Akron, OH
    Age
    24
    Posts
    848
    Post Thanks / Like
    Mentioned
    6 Post(s)

    Re: Placement of Sub and port for best response.

    Quote Originally Posted by NASTY08IMPALA View Post
    sub and port back is generally the loudest unless u face forward and seal off another good option is sub forward port to side firing off the quarter panel
    Maybe im confused, but how it an advantage to fire off into the quarter panel, in the trunk? Anyhow., box and sub are in car already. Its an l port box, so if i flip it around, without sealing it, will it be advantageous? If i do this, do i have to worry about back pressure if seats up? Granted box is back away from
    Seat so excursion will not hit seat.




  5. #5
    NASTY08IMPALA's Avatar
    NASTY08IMPALA is offline CarAudio.com Veteran



    Join Date
    Aug 2012
    Location
    LOUISVILLE, KENTUCKY
    Posts
    5,266
    Post Thanks / Like
    Mentioned
    43 Post(s)

    Re: Placement of Sub and port for best response.

    what u want in a trunk is something for the sound waves to load off of like the trunk lid or quarter panel so the sound wave has time to develop.. i turned my box around without sealing and it sounded like azz and was less output when firing to the rear...while sealing completely off works i dont like the sound personally




  6. #6
    AxT4430's Avatar
    AxT4430 is offline CarAudio.com Elite

    Threadstarter


    Join Date
    Aug 2012
    Location
    Akron, OH
    Age
    24
    Posts
    848
    Post Thanks / Like
    Mentioned
    6 Post(s)

    Re: Placement of Sub and port for best response.

    Quote Originally Posted by NASTY08IMPALA View Post
    what u want in a trunk is something for the sound waves to load off of like the trunk lid or quarter panel so the sound wave has time to develop.. i turned my box around without sealing and it sounded like azz and was less output when firing to the rear...while sealing completely off works i dont like the sound personally
    Wait.. why would non sealing have a much different effect then sealing off trunk? Both arent loading, and theoretically wouldnt as much output escape the trunk with a non sealed then a sealed? Atleast roughly equivalent?

    ****, im gunna have to move my large as box to test this..




  7. #7
    NASTY08IMPALA's Avatar
    NASTY08IMPALA is offline CarAudio.com Veteran



    Join Date
    Aug 2012
    Location
    LOUISVILLE, KENTUCKY
    Posts
    5,266
    Post Thanks / Like
    Mentioned
    43 Post(s)

    Re: Placement of Sub and port for best response.

    no lol u need time for the wave to develop ..not sealing n sealing is big deal ..and if ur subs and port r back u r loading off the trunk




  8. #8
    NASTY08IMPALA's Avatar
    NASTY08IMPALA is offline CarAudio.com Veteran



    Join Date
    Aug 2012
    Location
    LOUISVILLE, KENTUCKY
    Posts
    5,266
    Post Thanks / Like
    Mentioned
    43 Post(s)

    Re: Placement of Sub and port for best response.

    if u face subs forward without sealing sound wraps around the box causing cancellation thats why u seal to keep all sound in the cabin




  9. Likes AxT4430 liked this post
  10. #9
    Flatbush Boi's Avatar
    Flatbush Boi is offline Junior Member



    Join Date
    Jan 2013
    Location
    Houston, TX
    Posts
    11
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: Placement of Sub and port for best response.

    when i had a ported enclosure it was louder when facing rear. when i had it facing forward it was a little quieter, but it bumped on the backseat more




  11. #10
    mlstrass's Avatar
    mlstrass is offline Shaggy DOA



    Join Date
    Jul 2006
    Location
    Illinois
    Posts
    10,449
    Post Thanks / Like
    Mentioned
    28 Post(s)

    Re: Placement of Sub and port for best response.

    OP it's as simple as trying it both ways and letting your ears decide. Try forward sealed off with some pillows/blankets or whatever. Also try it forward not sealed off. Even though in theory if forward firing and not sealed off you should have issues, but the loudest trunk cars fire forward and don't seal it off. And some of them open their trunk during the run...




Closed Thread

Similar Threads

  1. orientation of subs and port
    By oldschoolboomer in forum Enclosure Design & Construction Help
    Replies: 2
    Last Post: 03-03-2009, 04:44 PM
  2. Best sub and port placement? **PICS**
    By bumpincrv in forum Enclosure Design & Construction Help
    Replies: 25
    Last Post: 02-08-2008, 11:59 AM
  3. combination of sub and amp best for SQ
    By parklife in forum Subwoofers
    Replies: 1
    Last Post: 08-07-2002, 03:03 AM

Posting Permissions

  • You may not post new threads
  • You may post replies
  • You may post attachments
  • You may edit your posts
1e2 Forum