The Installer Series by MartinLogan is a line of affordable, high-performance, ultra-low-profile custom installation in-ceiling and in-wall speakers.  Featuring titanium dome tweeters and mineral-filled polypropylene drivers, each model comes with a remarkably robust mounting-lock system and paintable micro-perf, bezel-free grilles for a nearly invisible installation.  Two all-weather models extended usage to high humidity areas.  Pre-installation brackets are available for all models and square grilles are available for select in-ceiling models.
 
A great choice for any room, the IC6 in-ceiling speaker is smaller than 9-inch when installed, perfectly melding performance with a discreet footprint.