English Installation and Operating Guide Page 31
pro.Bose.com Installation
3. Mount amplifier in a rack with four (4) rack screws and washers (not included).
4.3.2 Mounting two amplifiers
1. Remove rear rack ears from both amplifiers where they will meet in the middle. Then place the amplifiers upside-down
on a flat, level surface on a protective covering to avoid scratching the top of the chassis.
2. Attach a short rack ear to one side of each amplifier chassis with three (3) included screws.