Had a client change his mind about house audio when his house was 90% complete. He got mad that he was stuck with speaker holes in the T&G ceiling.
The bill to fabricate and attach mounts to the preconstruction rings and add dummy speaker grilles cost him more then cheapie builder grade speakers would have and came very close to the price of the Triads that were in our original bid.
But he was happy, he got his no speaker house.
Client is the dumbest smart guy (PHD) I know. He is an ongoing saga but he always pays his bills.
I am a trained professional..... Do not attempt this stunt at home.