IIRC, the AS690 is a dual 12 box with kind of a "reverse clamshell" arraignment for the dual 12s on either side of horn on the bottom of the box. I would be careful if installing recessed handles. It may not be easy to do so without inferring with the operation of the cabinet, i.e. compromising the volume of the chamber or interfering with the components. I know on KF650/95s the top handle is installed "upside down" to clear the driver.
Yeah that's correct. I'm thinking maybe I should just go with the surface-mount handles.