Muffles all bass. So if you want bass don't install these.
These are dumb
from Columbia, MO
These baffles are pretty much pointless. While they may provide some protection in situations where a speaker is exposed to a lot of moisture and dirt, they are way to enclosing and don't give speakers any chance to breathe. Furthermore, the most frustrating part is that these come with no packaging, literature, or instructions of any type and so a user has no idea on the ideal installation method and way to use them. In-all, I probably won't even use these in my installation and just wasted the money on two pairs of them.
These are very nice. A lot of the speaker baffles are just cheap plastic that's meant to keep any water in the door off of the speaker. These are nice, thick, dense foam, which helps to dampen door vibrations and improves the sound.
from Johnson Creek, WI
Did not know that these were needed thank you for knowing it helped out a lot