At the sound of these speakers, there is in principle nothing wrong. There are departures but clearly that important items are missing for the installation! In addition to cables for bass / midrange missing screws also to fix this. The included adhesive tape to vibration is a joke. For speakers of other manufacturers in the same price class one still gets not only a full set screws usually shim made of rubber to prevent vibrations.
I expect at this price to be able to install the speaker directly and not to first have to get important items. Therefore only three stars from me.