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Ok this is a repost from my build log as no one responded to it there and it really should have been posted here in the first place.
I just finished tuning the amp and box.
First off let me explain tuning the box because I know some will ask me what I'm talking about. Now this may not be the correct way to do it but it has always worked for me so I used this method again.
First you have to start when you build the box. I like to build the box about 20-30% to big for the sub I'm using. Then I add and remove Hard foam from the inside of the box until I get the box and sub tuned to what I like. In this case the whole back wall of the box now has 1/2 of hard foam glued to it. This changes the affective size of the box as well as adding a damper to the back wall of the box. As I said this may not be the right way but it was shown to my by a shop that was at the time well respected (now closed to economic reasons) and has worked well for me in the past.
Next I tuned the amp.
Now at low to moderate levels every thing is all good. But at higher levels I'm getting a bit of a distortion I cant seam to figure out.
It sounds at times like the box has an air leak. Now this is a sealed box and I have checked to make sure it is in fact sealed. I can find no air leaks of any kind and am 100% sure I have none.
Yet I'm getting this sound?
It only happens at certain frequencies as well. So some songs the sound is not there at all and others its there for most of the song.
Any one ever have this problem?
Here is a link to my build thread.
http://www.diymobileaudio.com/forum/diyma-build-logs/55791-2007-impreza-wrx-custom-10-sub-install.html
Thanks.
I just finished tuning the amp and box.
First off let me explain tuning the box because I know some will ask me what I'm talking about. Now this may not be the correct way to do it but it has always worked for me so I used this method again.
First you have to start when you build the box. I like to build the box about 20-30% to big for the sub I'm using. Then I add and remove Hard foam from the inside of the box until I get the box and sub tuned to what I like. In this case the whole back wall of the box now has 1/2 of hard foam glued to it. This changes the affective size of the box as well as adding a damper to the back wall of the box. As I said this may not be the right way but it was shown to my by a shop that was at the time well respected (now closed to economic reasons) and has worked well for me in the past.
Next I tuned the amp.
Now at low to moderate levels every thing is all good. But at higher levels I'm getting a bit of a distortion I cant seam to figure out.
It sounds at times like the box has an air leak. Now this is a sealed box and I have checked to make sure it is in fact sealed. I can find no air leaks of any kind and am 100% sure I have none.
Yet I'm getting this sound?
It only happens at certain frequencies as well. So some songs the sound is not there at all and others its there for most of the song.
Any one ever have this problem?
Here is a link to my build thread.
http://www.diymobileaudio.com/forum/diyma-build-logs/55791-2007-impreza-wrx-custom-10-sub-install.html
Thanks.