After much research, we have the Sound Plate LAP 440 and ordered us to a sound enhancement of our LG-55EC930V - very happy - an OLED television. The Sound Plate fits optically very well on this TV with an additional advantage: it connects wirelessly via LG Sound sync with our TV. Shipped on time, equal unpacked and connected 'all without problems. But then came the big disappointment: Improving the sound was 'according to our subjective perception - either with or without a subwoofer determine' no matter where we set up the subwoofer and which menu we had set. In addition, a non-documented for us Users disadvantage showed: If after switching on the TV, the image appears, we had to wait 11 seconds, until the sound comes (without Sound Plate picture and sound at the same time). Very bad! The Sound Plate was packed again on the delivery and next day it retouniert.
Since we do not believe that the two existing positive Amazon Rezesionen are inaccurate by the Rezensienten in interaction with the TVs used there, our negative experience can only be related to that of our OLED TV is already well stocked tonseitig. In this respect, the only two-star rating might only applies to our devices combined.
An already longer existing Yamaha YAS-101 sound box (about the same price range) that fits optically little to 55EC930V and can not be connected wirelessly brought us an audible tone improvement when we used on a trial basis. This experience was co-determines the order of the LG Sound Plate because we had concluded that a sound improvement is possible.