According to Don Stewart of Stewart Filmscreen Corp., there is a threshold screen size of approximately 100", above which a Greyhawk is not recommended for a Sharp Z9000. The following is a quote from him from the AVS screen forum:
"Summary. If the screen size does not exceed 100 inches, and you have some ambient light or room cross reflection, I prefer the GrayHawk. If your screen is larger than 100 inches I think more screen gain is in order. The Studiotek works great here but you will want to keep stray light off the screen."
Fortunately, I was able to change my order from a Greyhawk to a Studiotek for my 110" screen.
I hope this may help others who are considering the same combination.
"Summary. If the screen size does not exceed 100 inches, and you have some ambient light or room cross reflection, I prefer the GrayHawk. If your screen is larger than 100 inches I think more screen gain is in order. The Studiotek works great here but you will want to keep stray light off the screen."
Fortunately, I was able to change my order from a Greyhawk to a Studiotek for my 110" screen.
I hope this may help others who are considering the same combination.
