Great projector, but ...

About the Projector TH681 lot has been written here. Actually, a great device (super image and 3D) at an affordable price. Therefore, I have also long wondered if I still keep this projector, but 2 points have ultimately led me to that return device and buy a better beamer.

1. Loud fan
The fan is very loud and only in noisy film passages * not * be heard. For me, the projector hanging from the ceiling and in this position, the fan is louder. But that seems to be a firmware bug (as I have read here in another review) but could be related, it is warmer in a room below the ceiling than at the bottom of a table (see. The operation over 1,500m) and the Benq-developers feel that in this position, the fan should run faster. In Cinema mode, it goes like this just with the fan running strength, but at the material 3D projector will switch to the "Dynamic" and the fan turns on properly.

2. rainbow effect (RBE)
In the first test (HDR1) I knew nothing of an RBE and thought, my eyes are too tired or my imagination a (partly because my wife did not say anything about image disorders by colorful flashes of light or other). At the 2nd Test (HDR2) and after reading some sites on the net, I could then assign the correct effect and because the Tolkien movies run regularly during the winter months with us, this problem, despite the low price, the absolute no-go.

Wg. The noisy fan and the RBE ever a star deduction.