Raymond, it was a little awkward because my only sound level meter is on my iPhone, so I had to use it as the source of the pink noise and also to measure the dDs, but I got a pretty consistent reading of about 87 dBs. Moving the phone around a little doesn’t really change the volume registered by a ton. So now I’m feeling more like my Crack is probably fine, or at least close.
The brown resisters say 1451, RN70E, 2202F on them.