R2SUBZ and R2SUBDF - Installation Guide - Page 9
3.
Fasten the Surface Bracket part of each of the four brackets to the mounting surface using a suitable fastener.
Suggested fastener types and minimum sizes are as follows:
Wood: Lag bolts of three-eighths inch diameter (3/8”) or larger, by two-inches (2”) in length (or longer). Metric
equivalent is 10mm x 50mm. Make sure to drill a pilot hole to avoid breaking the lag bolt when tightening.
Steel Panel: 3/6-16 machine bolts (or larger) secured with flat washers, lock washer, and hex nuts. Length as
required. Metric equivalent is 10mm.
Concrete: 3/8” x 3” (or larger) expansion anchors such as HILTI Kwik-Bolt. Metric equivalent is M10 x 75mm.
Note: drilling a hole in concrete typically requires the use of a hammer drill.
IMPORTANT: Fastening the R2SUB to sheetrock, drywall, or plaster surfaces using the Direct
Firing Kit is not recommended!
4.
Place the R2SUB on the four Surface Brackets. Check to make sure that the R2SUB is oriented so that its speaker
input cord is in the most convenient position.
5.
Assemble the Clamp Brackets to the Surface Brackets using the 3/8-16 carriage bolts, flat washers, lockwashers,
and nuts provided. The carriage bolts should be inserted from the outside so that their rounded heads are visible
(see illustrations). Install a flat washer on the threaded end of each of the carriage bolts inside the Surface
Bracket, followed by a lockwasher and a nut. Tighten the nut with your fingers until you cannot turn it any further.
Finish by firmly tightening each nut with a socket and ratchet until the lockwasher is fully compressed
(approximately 12 to 15 foot-lbs).
IMPORTANT: On the corner where the speaker input cable in located, assemble the Cable Cover to the Clamp
Bracket, then the Clamp Bracket to the Surface Bracket, before inserting the carriage bolts. Route the speaker
cable through the bracket as shown in the illustration below. The Cable Cover is designed to protect the cable
from abrasion, as well as to provide a neat looking installation.
