Crossover issue.

I would let the reputable audio engineer that worked on the crossovers your problem and let him check out what’s wrong. 

Thanks for all your responses.
I feel like the gentleman who discussed the resistors is probably on track.
That seems to describe it perfectly.
Oldhvymec ...
It is a 4 way so the mid is actually 1500 - 3500
Then tweeter 3500 up.
Thanks again all. 

They call me MISTER shill! lol! Thanks.

Mr. Shill
The resistor in that circuit checked out however a bank of 5 capacitors had only 3 connected... Perhaps broke during shipping.
Since there would be more bandwidth going through there that would probably make it louder too correct?
I soldered the broken wire, but will not have a way to check the SPL until I reassemble.
It does seem like that would do it though, agreed?

+1 stereo5

When you say the bank of capacitors had only three of the five connected, they are in parallel I presume?

That’s an unusual way to get a particular value, two maybe three, but five?
I don’t suppose they are marked with values on them? Voltage and Micro Farads?

It should do much more than simply change loudness of a driver, depending on the circuit, it may have two drivers trying to reproduce some of the same frequencies. Instead of there being a hand off of energies in merging frequencies between drivers, there may be an overlap?

Without a circuit diagram, it’s all a guess.
But I must say if a well made solder joint came apart during shipping, I am very surprised. Does it appear to have been all one piece at some stage?
Got good photos of this?

I used to work building crossovers and speakers cables, USB cables for a living. It was tough to solder solid silver wire to micro USB and even mini USB at times, as the plating on the metals made it harder to get a strong bind, even with good rosin.

With point to point soldering it’s a good method to crimp lead wires over or around each other with minimal contact point, using the solder to mechanically seal it, and also protect from oxidisation.