I'm not concerned about the subwoofer. If you've ever lived wall-to-wall to a neighbor with a beefy sound system you'll know that low sound frequencies have no trouble going through walls. My main concern is airflow. The air that is pushed into the cabin by the HVAC from the front has to have some way to escape in the back, otherwise you'll create too much backpressure and much less fresh air will be able to enter the cabin.There needs to be some mechanism for the sub-woofer sound to escape the trunk. Curious how this works.
You will certainly notice more road noise too.I think my subwoofer woes have been answered by this thread.
My week old P3D has the solid rear deck and when asking others
why I feel like there's a real lack of bass after checking that sub/amp/EQ were all in check...this must be the issue.
I'll have to drive the car with my rear seat down tonight to see if it makes a difference
and I'll need to compare it with another model 3 side by side.
Addendum to this question: What did you use to fill the hole for those that have one?Bumping this again. Has anyone discovered (1) why the deck hole is now gone (simply noise reduction?) and (2) whether those of us with older builds can fill in our deck hole with no negative consequences?
Is this basically what you're looking for? Obviously covers more than just the cutout... https://www.amazon.com/BASENOR-Deadening-Soundproof-Protective-Insulation/dp/B081PXTLNZI have 6/18 M3 with the open rear deck cutout. I had been looking for the padding insert Tesla used to fill in the rear deck cutout In later models before they closed it entirely but I did some searching on Ebay and at the SC and noticed a few things.
This is the “Insert” I had been looking for: View attachment 536515
Unfortunately, I realized that this was actually built into the newer rear deck shelf’s and not actually an insert that could be retrofitted into older models with the open cutout. You can see that old version with cutout here:View attachment 536517 View attachment 536518
And then new version with built in cover for the cutout here:
View attachment 536519 View attachment 536520
The rear deck padding was changed to fill in where the previous cutout was. However, I was at the SC recently and noticed the latest M3 no longer has the same speaker grill on top to compensate for the cutout in the middle that you see in both versions above.
The lighting was horrible so these are bad pictures but you can see that the speaker grills are now only on the left and right and do not continue in one piece across the middle where the old cutout used to be which makes sense since they no longer have the hole anymore: View attachment 536525View attachment 536526
just wanted to share my findings if you had been searching for a rear deck insert in vain like me