Steinway & Sons Model LS – Installation Manual, version 2.1
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material, such as Styrofoam, which can support the loudspeakers on each side of the tweeter units.
The tweeter units are fragile and cannot support the weight of the stack without being damaged.
Ensure that the two rows of Styrofoam extend beyond the bottom edge of the stack in such a way
that they, and not the tweeter units, support the weight of the stack when the stack is raised upright
and mounted in the wall cutout.
Place the loudspeakers in order, with the bottom loudspeaker in the stack closest to the bottom edge of the
wall cutout in which the stack is to be mounted. This facilitates easy mounting when connections are
complete, as the stack can be tilted directly into place.
Remove the Brackets from Each Speaker Unit
All Model LS loudspeaker units, including boundary woofers, are equipped with metal brackets from the
factory. When these brackets are mounted correctly on the left, right, and rear sides of the units, they align
and secure the individual units in a stack to each other. Using a TORX 30 type screwdriver, remove the screws
securing the brackets to the loudspeakers, keeping the brackets and screws close at hand.
Mount the Side Brackets on Each Stack
Model LS boundary woofers, right, left, center, and surround loudspeakers: Using the screws you have just
removed from the side and rear brackets, secure the side brackets to the stack as shown below. The bracket
must bridge two loudspeakers in such a way that the bracket can be affixed to each loudspeaker with two
screws.
First, insert the screws into all four holes and tighten them by hand until the head of each screw protrudes 1-2
mm, then tighten the screws with a TORX 30 screwdriver. If you mount the bracket one screw at a time, there
is a risk that the last screw will not be fully aligned with the hole. Tightening the last screw can then result in
the screw thread being stripped, rendering the screw useless and resulting in an unstable loudspeaker stack.
When the side brackets are mounted on the stack correctly, there are two side brackets left over. These are to
be mounted on the rear of the stack, but only after the loudspeaker cables have been run as described below.
