Turns out Scan Speak was purchased by some California joint - Tymphany. Fortunately they don't allow joe schmuck like you and I to call them directly and Klaus has had no luck with them returning calls. Hmmpf.
They list Madisound as the place to call for any consumer questions - so I called Madisound. Turns out they suggest using any latex based adhesive. Something like liquid nails or Bosstick (?) - not a tile adhesive type of thing.
So, we'll give that a shot.
