Polk Audio PB SC85

Pre-construction brackets for select Polk in-wall speakers

Item #: 107PBSC85

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7 Reviews

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Open Box: $45.00

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These pre-construction brackets are designed to hold Polk's RC85i or MC85 in-wall speakers. Use the included wings to attach the bracket to studs before the drywall goes up. Polk provides the brackets and mounting tabs you'll need to do a quick and easy installation.

Product Highlights:

  • compatible with Polk RC85i and MC85 in-wall speakers
  • includes two adjustable brackets for easy installation
  • hardware included
  • requires drywall cutout approximately 8-15/16"W x 12-11/16"H
  • 10-3/8"W x 14-1/4"H x 1-3/16"D
  • warranty: limited lifetime
  • Our 60-day money-back guarantee

Polk Audio PB SC85 Reviews

Average Customer Review:

7 reviews
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Bracket Review

Written By Purchaser, New Jersey on Friday, September 19, 2014

Crutchfield Customer Review (What's this?)

Forms are plastic and relatively easy to install. The heads from the screw provided broke off way to easily when screwing into studs. These really are only useful as in my case where you want your sheetrock installers to do the cutouts so everything lines up well, otherwise they are not needed.

Pros: Easy Installation, tabs break easily and allow for easy measurements.

Cons: Plastic is flimsy. Screw heads broke with little force. Price is too expensive.

Easy Installation

Written By Darren, Raleigh, NC on Friday, August 01, 2014

Crutchfield Customer Review (What's this?)

The bracket is as described and provides a better mounting then just placing in a sheet rock cut out.

Pros: Easy installation and a firmer hold for the in-wall speaker.

Cons: None


Written By GabeP, Horseshoe Bay, TX on Sunday, August 25, 2013

Crutchfield Customer Review (What's this?)

Straight-forward, simple installation in a new-build home. Only complaint is that the drywall screws provided with the brackets are a bit substandard. All but two of them broke off at the head when driving them into the studs. Not expensive to replace them, but it did result in an inconvenient trip to the hardware store. House is not complete yet, so not sure how much of a difference these will make vs installing the RC85i speakers without brackets. Will be nice to have the holes in the drywall pre-located though.

Pros: Easy installation

Cons: Cheap screws.

are these really needed?

Written By DH, sioux falls on Saturday, May 25, 2013

Crutchfield Customer Review (What's this?)

bought these to go with speakers. they seem cheap and expensive considering how flimsy they are. hopefully they make installing easier. basement not done, so speakers aren't in yet, only the brackets have been installed.

Pros: should(?) make for an easier install

Cons: The price seems like plenty for some flimsy plastic brackets and a few screws.

good Bracket

Written By ttomeboy2152, Rockford, IL on Sunday, May 05, 2013

Crutchfield Customer Review (What's this?)

Work well for their intended use

Pros: Ease of installation

Cons: A little on the pricy side

Polk Audio PB SC85

Written By Jim, College Point,Fl on Tuesday, March 22, 2011

Crutchfield Customer Review (What's this?)

Waaaay too expensive for 4 pieces of fragile plastic. But they did make it easier
to place in new stud wall.

low value

Written By gardner, des moines, IA on Wednesday, January 20, 2010

Crutchfield Customer Review (What's this?)

I liked this bracket slightly better than the PB65 size due to the tab and slot side wing design instead of machine screws. However, you'll spend more time installing and adjusting these brackets than the actual speakers. For the price, you get some molded plastic, which seem to be relatively low cost to produce. When you screw in the drywall style screws to the studs, the bracket gets pulled out of level or square, as the screw drifts in the wood. The screws that came with it, will break off w/ minimal torque, so discard those and use drywall screws. If the whole bracket and side wings were molded one piece, it would be better. Installing the bracket before drywall will cause you to have to cut and line up the drywall hole precisely with the bracket, but if you skip the bracket and cut the hole in the drywall later, then the hole position is less critical. My "open box" bracket pair did not come with hardware or instructions. Also, I had to by a pair of the brackets for 1 center channel MC85, so I wasted 1 bracket. Can they sell open box brackets in singles?

Hands-on research

What's in the box?

  • 2 Plastic speaker frames
  • 4 Plastic wings
  • Eight 1 1/4" Sheetrock screws

Product Research


Overview: The Polk PB SC85s are pre-construction brackets for the Polk RC85i and MC85 in-wall speakers. The included wings mount to the supplied speaker bracket and to the wall studs, giving you a sturdy mount to install the speakers. Each bracket requires a cutout in the drywall approximately 8-15/16" wide and 12-11/16" tall.

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