Fiberglass - how much is too much?

Hello all! First off, this forum is fantastic... done a lot of reading here already and have learned a ton! I'm building a mix room in one of my apt bedrooms. In the back of the room are two large closets which I've conveniently used to hide boxes of Owens Corning 703 and 705 insulation for bass absorption. Each box contains 6 sheets. 4ft x 2ft x 2inches thick. That's 1 ft of thickness per box! My question: Is this TOO much insulation for the back of the room? Am I effectively turning my absorption into reflection by creating a faux wall, or will bass frequencies continue to be absorbed into 1 ft of insulation? I'm attaching a pic I drew up in Paint. Any info would be greatly appreciated!

Norman - yes it will work - but is it the best use of the fiberglass?? Like if you were to have a double layer of fiberglass across the front of the cupboard you would get good bass absorption yet you can use the left over sheets for sidewall absorption or for a ceiling cloud etc. cheers john

Thanks for the quick reply! I agree that right now the equity of usage is not quite just... I should have mentioned that I'm going to do more treatment including a ceiling cloud and some wall treatment for first reflection. I read the Ethan W article which shows that shows 12 sheets 2" 705 treat the room better than 6 sheets of 4" 705. So I see that even distribution is key. I just hope my rear wall insulation isn't so thick that I defeat some of their absorbing properties. :shock: Thanks!