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3.0 | 2 Reviews

LG SLM4R 420W Sound Bar w/ Bluetooth Streaming and Surround Sound Speakers



  • Bluetooth Streaming
  • Wireless Surround Sound Speakers
  • Wireless Active Subwoofer
  • LG Sound Sync

Quick Specs

  • Type: Soundbars
  • Energy Star Rated: No

See More

This item has purchase restrictions.

We currently only offer this product for purchase within 80 miles of our store. Questions? Contact us for more information.

Carbon Woofer for a High Fidelity Sound

LG Sound Bar SLM4R was engineered to produce clear sound with no distortion. Especially, carbon diaphragm in speaker woofer unit assures excellent sound clarity.

Adaptive Sound Control

Music, movies and even the news all have different audio profiles. LG Sound Bar SLM4R featuring Adaptive Sound Control identifies what's being played and automatically adjusts the sound mode to create the ideal audio experience.

Wireless Subwoofer

Feel the beat with the powerful LG Sound Bar SLM4R wireless subwoofer - convenient and easy to install, it pumps out 200 watts.

Versatile Connectivity

LG Sound Bar SLM4R has various inputs and convenient options such as Optical and Bluetooth®.

Bluetooth, Stream Anything

Streaming music directly via Bluetooth® from your smartphone to LG Sound Bar SLM4R.

TV Sound Sync

LG Sound Bar SLM4R can be simply connected to your LG TV via Bluetooth® and optical. Enjoy more plentiful TV sound with a simple connection.

Feel audio from every direction

Enjoy surround sound with the two additional wireless speakers in the mix. The 2.0ch rear speakers deliver audio from behind you for true physical depth of immersive, surround sound in a wall-mountable design.


  • Bluetooth Streaming
  • Wireless Surround Sound Speakers
  • Wireless Active Subwoofer
  • LG Sound Sync
  • TV Remote Compatibility
  • USB Playback
Bluetooth Streaming Yes
Surround Sound Expansion Yes
USB Playback Yes
Channels 4.1ch
Total Power 420W
TV Remote Compatibility Yes
Smartphone Remote App (iOS/Android) Android OS
Auto Volume Leveler Yes (App)
Dynamic Range Control Yes (App)
Night Mode Yes (app)
LCD Display Auto-Dimmer Yes
ASC (Adaptive Sound Control: Default) Yes
Standard Yes
Bass Blast Yes
Bass Blast + Yes
Movie Yes
Dolby Digital Yes
DTS Digital Surround Yes
MP3 Yes
Front 50W x 2
Subwoofer 200W (Wireless)
Rear 60W x 2
Wireless Active Subwoofer Yes
Bluetooth Yes (4.0)
LG TV Sound Sync (Bluetooth) Yes
LG TV Sound Sync (Optical) Yes
Optical Input Yes
Soundbar Power Consumption 23W
Soundbar Standby Power Consumption <0.5W
Subwoofer Power Consumption 33W
Subwoofer Standby Power Consumption <0.5W
Rear Speaker Kit Power Consumption 33W
Rear Speaker Kit Standby Power Consumption <0.5W
TV Matching 40" and above
Sound Bar (WxHxD) 35.1" x 2.3" x 3.4"
Subwoofer (WxHxD) 6.8" x 15.4" x 10.3"
Wireless Receiver (WxHxD) 2.4" x 8.7" x 6.9"
Rear Speaker Each (WxHxD) 3.5" x 5.5" x 3.2"
Soundbar Net Weight 5.2 lbs
Subwoofer Net Weight 11.7 lbs
Wireless Receiver Net Weight 2.2 lbs
Rear Speaker Net Weight 4.1 lbs
Shipping Size (WxHxD) 37.3" X 8.8" X 14.7"
Shipping Weight 26.7 lbs
Remote Control Yes
Batteries Yes (AAA)
Optical Cable Yes
Rear Speaker Cable Yes
Warranty Card Yes
Limited Warranty 1 Year Parts and Labor
UPC 719192633650
Country of origin China

Quick Specs

  • Appearance

  • Type: Soundbars

  • Features

  • Energy Star Rated: No

Professional delivery and installation is available for every product we sell. We would be happy to coordinate delivery and installation for you.

Extended warranties are usually very inexpensive and can save you thousands in the future. It's simple and inexpensive to purchase extended warranties and one of the smartest ways to protect your investment.

Electronics can be large, heavy and expensive. You probably don't have the special tools or expertise needed to fix them in a crisis. If you can spare a few thousand dollars without batting an eyelash for new electronics should they break tomorrow, don't buy a warranty. But if you're like most of us, protect yourself by purchasing inexpensive extended warranties when you buy a new product and save yourself big money in the long run.

3.0 out of 5

50% of reviewers recommend this product.

1 Stars


12345677 11/26/2021

Barely a year old and sound cuts in and out bass randomly stops working. Awful
Originally posted on

No, I do not recommend this product






5 Stars

System works perfect in my bedroom

About65trees 2/19/2021

Ok so I bought this for my bedroom 2 weeks ago its paired with a 65 in samsung qled TV it is a fantastic lil unit a instruction manual wasnt needed its common sense setup dont listen to all these bad reviews people saying there Rear speakers are cutting in and out need to set the box for the rear in a way it has a clear view of the under tv soundbar pretty simple also people saying saying sub cuts out it doesnt the sub isnt designed to sit super far away from the soundbar as a person who does custom home theater for a living your sub should be up front with the soundbar placing the sub day behind the couch or on the side of the room you sit will only drown out the subtle sounds from movies coming from your rear speakers I have a 10k dollar home theater speaker setup in my living room and Im telling you this lil system in my room kicks but for the price its top notch sound is clean and clear if you wanna adjust all the equipment setting and complain this cant do that BUY A MORE EXPENSIVE setup if you want micro controls for the price of this it cant be beat it is not lgs fault your expectations of setting that dont come in this price range arent in this price range get real if you wanna be fancy and want everything from a 200 dollar setup your delusional lol
Originally posted on

Yes, I recommend this product

 Incentivized Review