We've had some requests to start carrying aluminum caps for our passive radiators. Javad Shadzi had these made for the Enthraals, a project using our LDW7, SDX10, and dual APR10. They are solid billet aluminum milled and tapped, then anodized black. They are meant to replace the plastic cap on our current APR series passive radiators. They fit both the APR10 and APR12 and add 125 grams of weight.