ported box for jl audio 13w7 opinions
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=99438
Printed Date: April 28, 2024 at 7:43 AM
Topic: ported box for jl audio 13w7 opinions
Posted By: steveskal
Subject: ported box for jl audio 13w7 opinions
Date Posted: November 28, 2007 at 12:24 PM
Hello all, I am just trying to decide on a box for this speaker. All of the ported boxes I have seen have the speaker and port on the same side. I have spoken to one box builder who says a box with the speaker firing up and the port firing back is the way to go?? What do you think about this, the box will be in a 2002 Escalade with a 1000/1 amp on it. Thanks!
Replies:
Posted By: tcss
Date Posted: November 28, 2007 at 12:43 PM
Build the ported box from JL's websight.
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There is no such thing as free installation!
Posted By: steveskal
Date Posted: November 28, 2007 at 1:03 PM
The only "design" they show on the site is speaker and port on the same side. As far as specs go, lets say both have the correct amount of cubic feet as per JL Specs, again, I just want to see if the speaker firing up and port back is better..worse..indifferent, than firing back with the port.
Posted By: aznboi3644
Date Posted: November 28, 2007 at 4:34 PM
experiment with different styles and positions.
build two boxes...one with sub and port on same plane and one with sub and port 90 degrees off axis.
then see what style and positioning sounds the best to you
Posted By: DYohn
Date Posted: November 28, 2007 at 6:01 PM
In a car, it is usually best to have the speaker and port on the same baffle. ------------- Support the12volt.com
Posted By: tcss
Date Posted: November 28, 2007 at 6:12 PM
If the speaker firing up and the port firing toward the rear was vastly better don't you think JL would recommend that?
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There is no such thing as free installation!
Posted By: boogeyman
Date Posted: November 28, 2007 at 6:34 PM
it is usually ideal to have the speaker and port on the same plane as one another
Posted By: steveskal
Date Posted: November 29, 2007 at 12:17 PM
aznboi3644 wrote:
experiment with different styles and positions.
build two boxes...one with sub and port on same plane and one with sub and port 90 degrees off axis.
then see what style and positioning sounds the best to you
This kind of defeats the purpose of this post. I'd rather not waste the time, the extra money and effort if someone on the forum could offer some good insight. I'm not going to build to boxes and play trial and error.
Posted By: aznboi3644
Date Posted: November 29, 2007 at 4:19 PM
steveskal wrote:
aznboi3644 wrote:
experiment with different styles and positions.
build two boxes...one with sub and port on same plane and one with sub and port 90 degrees off axis.
then see what style and positioning sounds the best to you
This kind of defeats the purpose of this post. I'd rather not waste the time, the extra money and effort if someone on the forum could offer some good insight. I'm not going to build to boxes and play trial and error.
not really..you asked for our opinion. I gave it.
Posted By: steveskal
Date Posted: November 29, 2007 at 5:08 PM
Ahhh yes I see. So if someone asks what speakers are better for his car are you going to recommend he go out and purchase several sets so he can "try them out" and see whats best?? Lets use some common sense here.
Posted By: DYohn
Date Posted: November 29, 2007 at 5:11 PM
Posted By: stevdart
Date Posted: November 29, 2007 at 6:39 PM
A lot of people who spend some time experimenting with placement find that when the driver side is facing at an upward angle toward the rear, they get best results. That is as opposed to firing straight forward or straight up. Here is an example of a box design that would give you the leeway to use it as either straight forward firing or tilted at an upward angle: 
Driver and port opening should be on the same front baffle. This example shows how you can use your imagination to more easily experiment with firing direction in the vehicle. There are some SPL builders who have experimented exhaustively on placement, including separation of driver and port firing directions. These experiments were done for a single vehicle to find highest SPL, and I have heard of at least one setup that fires port upward while the driver fires forward. The key is that this configuration was specific for that particular car and box build, and nothing but SPL was the intended result. Sound quality was not a consideration. ------------- Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
Posted By: steveskal
Date Posted: November 29, 2007 at 10:55 PM
Thats very interesting, maybe I can just put a chock under the front of the box and voila, its diagonal pointing up. I don't know if that is oppotune but I could at least experiment with that.
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