I've read dozens of anecdotes supporting or dispelling the idea that XTC foam speaker baffles in untreated doors make a difference. The claims are all over the map. Some claim they're suitable for rain-guards only, some say they change the character of the sound dramatically and some claim no difference at all.
That said, I've decided to see for myself. I have a set of NVX VSP 525 components in my doors which leave a bit to be desired - at least in the midbass and lower midrange. I plan to install the baffles without any cuts or holes if possible. Changes may be made later, but I want to start like this.
I've decided to analyze the truck before and after to see if any quantifiable difference is present in this application. But before I get started, I wanted to post up & solicit any advice and offer a qualifier. The main issue with this idea is that I don't have a calibrated mic. I only have the mic which came with my Sony home tuner & it has no calibration file.
However since this is a single-parameter comparison, I assume that relative differences will be sufficient. In any event, it's all I have, so it's all I'll be using.
I guess any advice going forward would be appreciated...as in if there's any way I can make this test more accurate or useful for the likes of you all, I'd love to hear about it. Otherwise I'll be measuring a baseline soon. With any luck I'll be able to get all this done by this evening. Wish me luck