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I read it somewhere saying that the board is flimsy. Actually the board is quite good. The PCB is thick and it is a good quality board. What I really had issue with was the wire connectors. It is a nice concept but the connectors are too flimsy/weak that they don't hold the wires well especially if the wire is a bit big like the subwoofer wire. They can only hold small wire and even that when using a flat screw drive to tighten the screws the whole plastic body of the connector would be turned. I had to use tape to tape down the wires so they could stay connected. While the connections were bad, the performance was quite good. You have options to set how you want the speakers to sound. Wasn't for the wire connection I would give it a 5 stars.
I wish they posted the specific frequency cuts with the different jumper combinations. The instructions/explanations I found are approximate and the one reason I need a crossover is to optimize frequency distribution, just because something sounds ok doesn't mean it's working in it's ideal range, I could be underworking or overworking a speaker washout knowing it. Aside from that the sound quality is ok. If the manufacturer provides a frequency cutoff chart I will revise my review to 5 stars
These work pretty well. My only issue is almost everything written on the board is in Chinese. The adjustments are kind of odd, but finding out how to use them is easy enough and mentioned in the description. I think there’s even a photo explaining them. I also like that you can store any unused jumpers sideways on one of the metal pins.