2008 Yaris sedan ‘S’ sound deadening project.

[cm_ls1]

Originally Posted by derickveliz2

I got this from Image dynamics forum when I was asking for an advice between sealed or ported in my sedan:

1) when ever you place a sub in a box ( ported or sealed ) in the trunk of a car you will have to deal with the transfer function of the volume of air in that trunk.
Simply put larger the trunk thicker and heavy the lower octaves sound plus the notes feel lethargic.

2) A direct input to the cars interior is the best approach for best overall SQ but not necessarily what some people want in the bass tone ( to flat sounding to their ears )


D.

I tend to disagree with 2) - i have tried various ways and in a sedan as close to the opening of the trunk face rear is the best in most situation, least cancellation of bass.

[derickveliz2]

Originally Posted by cm_ls1

I tend to disagree with 2) - i have tried various ways and in a sedan as close to the opening of the trunk face rear is the best in most situation, least cancellation of bass.

I'm with you, but this is the first time I have a sedan, and haven't really play with it, the Bazoka tube it's facing backwards (per instructions) and sounds good to me (sorry, feels good jeje)

Maybe they mean that if you have a ported box and the port opens to the cabin, like I've seen in some applications. (I know and I remember this was SQcomp's plans long time ago)

To me, it's all about learning and trying new things!

We'll see how it works for Herb? maybe he would need to fold down one of his seats!

D.

[cm_ls1]

Originally Posted by derickveliz2

We'll see how it works for Herb? maybe he would need to fold down one of his seats!

D.

Bass passes through the seats whether they a folded down or not, thats not the problem, the issue here is if the wavelengths of the bass cancel each other out, of course i would suggest trying both and see what sounds best

Imagine that the vertical line on the left is the back of yourbsedan, the red line is the bass coming out of the sub, the yellow is it reflecting, what you want is these lines to overlap or the sound will cancel each other out reducing bass.

So the last image is your ideal scenario

[derickveliz2]

Originally Posted by cm_ls1

I would suggest trying both and see what sounds best

Your ideal scenario

Cool, I will try (once I get a box for the IDQ12, it's going to take me some time though)

Thanks
D.

[Herbicidal]

So is this illustrating that the 'opening' for the sub is facing the back of the rear seat? Or should the opening face towards the back of the car? Apparently I'm directionally challenged. Thanks!

Originally Posted by cm_ls1

Bass passes through the seats whether they a folded down or not, thats not the problem, the issue here is if the wavelengths of the bass cancel each other out, of course i would suggest trying both and see what sounds best

Imagine that the vertical line on the left is the back of yourbsedan, the red line is the bass coming out of the sub, the yellow is it reflecting, what you want is these lines to overlap or the sound will cancel each other out reducing bass.

So the last image is your ideal scenario

[derickveliz2]

Originally Posted by Herbicidal

So is this illustrating that the 'opening' for the sub is facing the back of the rear seat? Or should the opening face towards the back of the car? Apparently I'm directionally challenged. Thanks!

Yeah it took me a couple of seconds too, I usually do sections going the other way, but the image shows the sub facing towards the back of the car.

D.

[Herbicidal]

Originally Posted by derickveliz2

Yeah it took me a couple of seconds too, I usually do sections going the other way, but the image shows the sub facing towards the back of the car.

D.

Thanks, I was planning on facing it that way. The angle of the sub box (I think) will fit up nicely against the angle of the backseat. Whoever sits there will get a back massage!

OH! And I just received an e-mail from Sonic saying free shipping on all orders over $20 between now and Friday the 17th (within the continental US)!

[Herbicidal]

Received the new subwoofer box yesterday and WOW! It has a much smaller footprint than the ported box. Right now, the ported sub box is facing sideways, so based upon those previous graphs, I probably have it facing the worst possible direction. Live and learn. I'll take a side-by-side comparision picture this weekend and post it. If I like it, I'll end up getting more of my truck space back AND lose some weight. I'll try to remember to weigh the boxes without the speaker and see what the difference is. Probably just a couple of pounds at most.