Couch used as a bass trap

Hey guys

The wife and I have bought a new place so I am kitting it out with new equipment and new furniture

Now before I install anything permanently I want to treat the room properly (lounge will be used as the theatre). Acoustic panels are being built for the walls at the moment but I'm still going to need bass traps

The problem with most bass traps though is that they are hideous and I don't like the look of circular/triangular tubes in the corners of the room. This had me thinking......I'm buying an L shaped leather couch that will span the length (well almost) of two of the walls

Could I not fill the inside of the couch with Think Pink or rigid fiberglass? The underside would then be stapled closed again with speaker cloth or something with similar properties

Is this a crazy idea or can it work? Theoretically it should