I want to replace the OE 6x9s in the rear deck of a sedan with 6.5" components.
keep_hope_alive pointed out in the precursor to this thread (specs and images of my current setup can be found here) that the subwoofers in the trunk could distort or damage speakers mounted in the rear deck. So I came up with an idea. It may or may not be feasible, so I thought I'd run it by ED&CH gurus first.
My plan is to first make a MDF adapter so I can mount the 6.5" drivers where the 6x9s went. This adapter would screw or bolt into the metal of the rear deck with the speaker facing up into the cabin, like it would normally - behind the rear seats. This leaves the bottom of the cone exposed through the basket, so any SP from the subs would reach this, so I go the idea to make an enclosure that would fit around the parts of the speaker that are exposed in the trunk and would meet with the metal. Depending on how big this is I might be able to leave some room around it so the trunk can "breathe".
Is this feasible?
Would this ruin the sound of the speaker? Would it flat-out ruin the speaker?
If a box can be built, how big does this box have to be?
I have some experience with enclosure building. I built the sub box, but their spec sheet simply gave me sealed volume to aim for and I was able to attain it after calculating for displacement.
I understand a volume can be calculated using the tech specs of the speakers, but I have zero experience with this.
The components in question are Kenwood Kfc-P709PS and the tech specs are as follows:
(it's an image, if you can't view it let me know exactly what numbers you need)
Any advice or assistance you could give me would be greatly appreciated.