Build a TV LCR in-wall speaker recessed wall

Heres our quick write up on building a recessed TV wall with 3 x LCR speakers around a curved 48" screen. We are really happy with the outcome and hope it helps you!


  • Created cavity for in-wall speakers - Now the room has a big hidden sound
  • The downside of curved screens is they stick out more! Not when it is in a recess...
  • Looks fantastic! Sounds Fantastic!


  • Tape measure / spirit level / pencil / Plaster board saw
  • Wood to build frame (we used 47x50x3m carcassing)
  • 12.5mm plasterboard 
  • Plasterer or DIY skimming / Metal board corner trim / Plasterboard screws
  • Loft insulation
  • TV and TV wall mount
  • 3 x inwall LCR Speakers (left / Right / Center)


Our starting wall was made of 5" thick breeze blocks, typical wall construction in a 1960s house. We took some timber carcassing and built a frame appropriate to the dimensions required for our screen and speakers. When workig out your frame sizes always remember the thickness of plasterboard will be added once constructed. For our carcassing we used 47x50x3000mm C16 but any good strong & straight timber of uniform size will do.

 timber frame

In the case of this build the cables were already pre-existing in the wall from previous wall monuted speakers. This is your time to make sure you have all cables run in and you have sufficent cavity for your speakers. The Monitor Audio CWT250LCR speakers that we installed only neede 99mm or depth clearance so we then dug out a few inches of the breeze block to give room, you can also just build the wall out more as an alternative, we wanted to keep the wall shallow as the room is not large.

LCR install how to

 We used a quick coat of PVA glue and water to seal the wall, this stops any dust. And then made 100% sure all required cables were in place. 

insulate the wall for sound & speakers

We then took some standard insulating roll, available from your local hardware store and packed into the warea of the wall that have no function. This stops air moving as much and gives better acoustics. 

board the recess in-wall speaker wall

Our frame was then boarded with a standard 12.5mm plasterboard. We use two skins of this board with no-nails glue between them. This gives a very solid surface that is much better acoustically. The sides were then boarded with a single layer and the metal corner trim was cut to size on all corners ready for plastering.

 plastering tv LCR speaker recess wall

Once our wall had been skimmed by our handy local plasterer we allowed drying time, painted the wall, and then referring back to our original design we worked out the speaker positions for cutting the correct holes. 

cutting wall for LCR speakers

 Cut through the board with a plaster board saw. All of our speakers come with a wall/ceiling template to make cutting the correct size hole very easy. 

inwall speaker cavity back box

we used some thin foam sheets glued t the inside of our speaker cavities. This was actually spare product packaging we had available. anything similar would do a great job. We mainly did this to protect our speakers from dust, but it may give a better sound also. we did ensure that the back of the cavity was nice and flat.

recess TV wall LCR

And as for the sound, we are very impressed, even with the subwoofer disconnected the bass frequencies from the front channels are fantastic! Very clear detailed mids and high levels... 

We would love to see your pictures of your builds, we may even feature these on our site and give you a free gift.