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5.0 | 1 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

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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.



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

Quick Specs

  • Appearance

  • Type: Soundbars

  • Features

  • Energy Star Rated: No

Specifications Sheet

Owner's Manual English 2,747K 09/30/2021

Online Manual English 2,141K 09/30/2021

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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.

5.0 out of 5

100% of reviewers recommend this product.

5 Stars

Great Sounbar

Shukur Ibrahimli 2/23/2023

Im using almost 2 year without issue. I have question regarding with subwoofer or rear speakers. Is it possible to buy one more kit of rear speakers or subwoofer and connect to it? If yes will it extend channel?
Originally posted on

Yes, I recommend this product

 Incentivized Review