My in room measurements:
View attachment 89655
I had 2 pairs some time ago. Garbage is my verdict
Yours seem to have had a problem with seal. Some sort of
kiss from a rose assembly error I presume. The perils of ultra-cheap speakers I guess... That tweeter actually looks alright, it's easily the least problematic driver of the bunch. Crossover points are all screwed up because there wasn't even any budget for dropper resistors, and the drivers would have needed some attention beyond those.
At the end of the day it's an 8" 3-way from a major brand that sells for $130
a pair. Normally that sort of money buys you some 4" 2-ways, and it should now be obvious why. (The cheap terminals really are no surprise at all.) And believe it or not, they could definitely be even worse. This is the kind of speaker for a mostly broke teen who wants to throw a bit of a party or rock out every once in a while, or something. Pioneer used to sell similar cheap 3-ways with cone tweeters over here for many years.
Improving these substantially on a modest budget would be a nice DIY challenge. I would prefer a technically more advanced speaker (like the Behringer B2031P back in the day, but those have been unavailable for years), but these still are a better basis than some pseudo PA speakers with piezo horn. It could make for a nice "father and son (or maybe daughter)" kind of project if some sort of kit or online instructions were made available.