Negative points, there are also:
The plugs are indeed locked, you need something Karftaufwand the lock to activate and one wonders whether the minimum rotation of the sleeve is sufficient to the engraver reasonable to arritieren but clear it keeps everything firmly bomb.
The plugs are quite long and if the boxes are very close to the wall (with me on a bird wall bracket) it may be that disrupt the plug.
Finally, it should be noted that the connector completely made of metal and therefore care must be taken that the Lautsprecherbuxen not too close together are to avoid short-circuits (if need shrink tubing or ISOBAND drum but then the look out).
In summary, I can say if the above points may not apply a super connector for a reasonable price.
