sound door or solid?

I had originally found 4 solid core doors but the sales dude offered me 4 "sound doors" instead at a good price. Here they are: http://www.genbyg.dk/view.php?template= ... &gallery=1 Now I doubt whether these will actually be good for my construction, which is a double wall construction. I suspect (but don't know for sure) that the sound doors (probably made for office use) themselves are a MAM construction, thus creating a 4 leaf barrier between the control room and recording space. Wouldn't ordinary solid core doors be the best you think - if infact the sound doors are not completely solid and ment for installing in a single wall?

I think your assumptions are probably correct, although I don't speak a single word of any Scandinavian languages - if you already have double frame walls, you're right - your best bet is to equal or exceed the mass of the wall for each door, using SOLID core slab doors(with good seals, of course)... Steve

Thanks Steve! It says nothing of acoustical value in the text;)