This is German quality in a nutshell. It may look insignificant when you unpacked it and weighs just 8 kg. One wonders if it can really produce the bass sound you want. You need not to be worried. Adam knows what to do. I run this together with my Adam 5 monitors and it will be an incredible sound. Anyone who listens believe I have a giant speaker for the bass, but this is only 7 inches.
There are a lot of features on this sub. Thomann info is in this case somewhat poor. When I ordered, I had no idea that there was wireless motorized remote control for volume and frequency. This can be found usually on much more expensive speakers. Also I did not know that the speaker goes into standbye after 15 minutes of idle period. When you put on the sound it goes running lightning fast. Of course there is the high pass filter at 85 Hz and phase invert, and such a useful thing to be able to turn off the Sub with a pedalswitch and thus switch between satellites only, or satellites + Sub.
Ther are no Magnetic shield, but in most cases, this kind of speakers stands on the floor and there will be no problem. It is obviously more difficult to mix with a Sub, but you learn fast and finally, you can not be without it.