[Chrisbee]

My listening room is in an attic within the roof space. There used to be a sort of sun room at one end open to the great outdoors but seperated from the listening room by double doors. (French windows)

I enclosed this open space with large insulated windows fixed at the gable end to make it into another room at one end of the roof space. This new room became my IB enclosure.

The silver metal panel you can see in one of the images is a louvered panel. I was worried about the sun beating down on my drivers through the glazed gable end.

Sir Thomas de la Cult was not happy at the idea of closing off the backs of the drivers. I calculated the actual open area of the louvers between the alumunium blades and decided it did not reduce the freedom of the backwave. Subsequent listening tests suggest it had no audible effect. It helps to add somes stiffness to the wall thanks to the frame and 6" long screws holding it in place. If I had to advise somebody building an IB I'd say don't enclose the drivers. It is much sexier to be able see and show off the drivers.