Omnitronic BOB-10A Subwoofer Schwarz

After I bought this subwoofer as B-ware in the shop, I unfortunately had to send it back, because the housing was cracked and a "hissing" can be heard from the satellites when switching off.
So, returned the subwoofer and ordered a new (a-value) product. However, it should quickly become apparent that this is in similar condition as the B-ware product.

Condition upon delivery:

Even the "new product" has slight chipping of the outer paint finish, which simply has to do with the fact that the wooden cabinet was not glued/stapled together cleanly. Where there are gaps, the paint (varnish) can crack and shows hairline cracks.

The protective grille was screwed in poorly - one screwdriver wasn't in properly at all. I loosened all screws, removed the grille, filled all holes, pre-drilled and then reattached the grille and screws (longer ones). Especially with a subwoofer, the grille must sit tightly, otherwise it buzzes.

When the subwoofer is switched off (mains switch), a medium-loud hissing noise is heard on both satellite channels - although all volume controls are turned down to minimum.

The amplifier (for the satellites) is very noisy - probably the built-in DSP is to blame (which probably also produces the hissing when switching off).

The cabinet is (on the assembly side) not well made: More or less glued and stapled. Stable it is, but more paint will flake off, as I see it.

As for the sound, I can only say that the subwoofer is o.k. - puts up moderate pressure, but can be useful for a rehearsal room. I have used other tops (no Omnitronic), here you can hear but that the integrated crossover already separates quite far "above", so as not to endanger (when connected) the small - recommended for this - Omnitronic tops.

All in all I would have expected more quality (workmanship), because 320,- Euro are not little money.
For rehearsal room or light sound reinforcement o.k. For professional (even smaller) sound reinforcement I would not recommend this subwoofer rather.