Join Date: Feb 2004
Location: Cardiff, CA, USA
I installed the BMW (J&M) speakers in my wife's Shoei. I followed the instructions cutting out the foam. It was easy and relatively painless, with a good exacto blade. I did get in trouble for getting the cut-up styrofoam pieces all over the place in the kitchen. She is happy, now, although we are having a problem with the micrphone staying in place (weak velcro adhesive backing).
My problem with the J&M speakers is one my wife is insensitive to, that is that the J&M speakers sound totally lousy. I've replaced my speakers (in my flip-up HJC) with the titanium radio shack/Koss ones. Now, she's happy and I'm happy.
I know this may be slightly peripheral to your question, but what do you expect from a low cost open forum.
'06 Ocean Blue Metallic LT (mine)
'15 Grey 328d (ours)