As Richard suggests the logical place for speakers would seem to be in that cavity, for that is where mine are. I do have the over-centre hood tensioning lever add-on, which can rub across the face of the speaker grill.
On the other hand having owned my Mog for circa 20 years I can not remember a time when I have listened to the radio while driving it..! So I guess for me a radio is about as useful as an ash tray on a m/cycle.
But then I do just love the V8 Rumble with the occasional pop und bang on the over-run, music to my old ears...
