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120W 4.1ch SoundPlate™ with Subwoofer and Bluetooth Connectivity

  • LAP340

Key Features

  • Slim Design
  • 4.1 Channel Speaker
  • Sound Sync
  • Dual Built-in Subwoofers
3D Surround Sound Processor

3D Surround Sound Processor

Put yourself in the middle of all the action with LG's onboard 3D Surround Sound Processor, which creates a room-filling surround sound experience for movies, TV shows and more.

LG SoundPlate™

LG's SoundPlate™ can be easily installed and connected to TVs of many sizes, providing 4.1 channel surround sound with built-in dual subwoofers. It is designed to help you experience the ultimate in sound quality.

Disclaimer: LAB540W model shown

Slim Design

Slim Design

SoundPlate™ has a sleek, minimalist design that fits neatly into your entertainment center and blends perfectly with just about any décor.

4.1 Channel Sound

4.1 Channel Sound

Our 4.1 multichannel surround system creates a detailed, expansive soundfield that lets you experience your entertainment in a whole new way. The speakers utilize high-end neodymium magnets, while the deep, powerful bass is reproduced by the SoundPlate’s twin built-in subwoofers for movies and music like you’ve never heard them.

The Perfect Design for Your TV

The Perfect Design for Your TV

The LG SoundPlate was designed to pair elegantly with today’s premium televisions, ranging from 32 to 55 inches, its durability was confirmed under TVs up to 83 pounds. Whether used with your primary of secondary TV, SoundPlate is a beautiful addition to your home décor.

Built-In Dual Subwoofer

Built-In Dual Subwoofer

The built-in dual subwoofer adds extra bass to enrich your entertainment, with a more lifelike sonic spread than from a single low-end source.



This 120-watt sound bar from LG brings more than enough power for you to enjoy your favorite movies and TV shows, as well as streaming MP3s via Bluetooth.



Wirelessly stream music directly from your smartphone or other compatible device to your LG SoundPlate™ for a seamless listening experience.

Sound Sync Wireless

Sound Sync Wireless

No wired connection needed! Easily link your LG Sound Plate with your compatible LG HDTV wirelessly via Bluetooth®, reducing the cable clutter behind/beneath your television.

Channels 4.1
Total Power 120 Watts
TV Matching up to 55"
Unit Dimensions (W x H x D) 27.6" x 1.4" x 13"
Shipping Dimensions (W x H x D) 32.2" x 3.6" x 14.7"
Shipping Weight 10.7 lbs
Net Weight 8.2 lbs
Front 20W x 2
Surround 20W x 2
Subwoofer 40W
Dolby Digital Yes
MP3 Yes
3D Sound Processor Yes
Wireless Audio Streaming via Bluetooth® Yes
Wireless Sound Sync Yes
Optical Input Yes
Remote Control CR6 Modified
Batteries CR2025 Battery
Optical Cable 1
Wall Mount Bracket Yes
Power Off Consumption Under 0.5W
Limited Warranty 1 Year Parts and Labor
UPC 7191922591783

What People Are Saying

Rated 5 out of 5 by from Amazing product for reasonable rate I bought 2 LG LAP sound systems and both of the sound systems are excellent. My family is enjoying with the sound quality, compact design, easy installation, user friendly and excellent support. I highly recommend this product for all music lovers.
Date published: 2015-07-15
Rated 5 out of 5 by from Perfect fit for my Set-up I love this Sound Plate! I really enjoy that unlike a sound bar, with this sound plate my LG 47" flat screen TV sits on top of the plate with very little extra space necessary, approximately 5" of additional space to the width of either side of the TV's Base plate stand and no additional space to the depth# Also, the height for which it will raise your TV is extremely minimal at just 1#5", overall dimensions = #12.5"D x 27.5"W x 1.5H#. All of which adds up to a space conserving sound system which sits in a solid, stationary position. The Surround Sound is fantastic as are the Built-in Subwoofers which together provides an added movie theatre sound affect when the "Cinema-Sound" feature is turned on. Additionally, since my TV is also an LG product, the TV and Sound Plate automatically communicate and integrate with one another thereby relegating my manual hands on set-up and adjustments to simply Plugging the Sound Plate into the wall socket and the single optical cable into the back of the TV and then turning off the TV speaker so as to have 100% of my sound experience coming solely from the Sound Plate itself..... Whew ;^) With this convenient non-space intrusive surround sound system with subwoofers and the Cinema Sound feature, you can't go wrong.
Date published: 2015-06-30
Rated 5 out of 5 by from Big sound from a small package Very well designed. Looks great, use it in my bedroom with a 55" LG TV. Hardly noticeable, until you crank it up. Wow, sounds amazing.
Date published: 2015-04-16
Rated 5 out of 5 by from Set up and sound quality is excellent. Thus unit was very easy to connect to my new 65 inch Smart TV. Only one optical cable connected to the unit and my tv. Although the unit has a remote control, the tv turns it on and off when I turn on or off my television. The remote is small and very easy to use. There is also a mute button to use when necessary. The sound quality is excellent, especially for one who has poor hearing. Would highly recommend this as an external sound system.
Date published: 2015-02-12
Rated 5 out of 5 by from Replaces larger system I bought this accessory for 2 of the 3 lg's I recently purchased and found it to be competitive with the large multi-speaker sysem I sold. Worth the investment and works as advertised. On the Cinema setting, the sound really envelopes you.
Date published: 2015-02-06
Rated 5 out of 5 by from Amazing sound This sound plate is amazing, theater sound with bass without having to hook up an additional speaker, two thumbs up! Connections flawless, performance 100%, what more do I need to say? Pair with any LG TV and your done, oh, and listen to the sound from game consoles, might as well be in the game yourself!
Date published: 2015-01-18
Rated 5 out of 5 by from LG soundplate GREAT sound, would be a little better with wireless surround speakers, didn't empty my wallet !!
Date published: 2015-01-11
Rated 3 out of 5 by from Sound and operation This product works great but sound quality is very lacking. I am not able to enjoy movie effects like I have with another system I owned. If sound effects are not of interest then this is an ideal system with ease in set up and operation.
Date published: 2014-12-28
  • 2015-10-04T11:05CST
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We're here to support you with our product.

Contact us for any purchasing inquiries.

Product Support


Ask your questions. Share your answers.

Can this sit inside of a custom built-in media console without having an issue of overheating?

Asked by: Dedejack3
Yes. It will fit without overheating.
Answered by: Krishnagiri
Date published: 2015-09-22

Can TV bigger than 55 in but only weighing 61 pounds be used on this?

Asked by: Cmajor
The weight limit for the LAP340 is 87 lbs. The Sound Plate dimensions are 12.5"D x 27.5"W, if your TV can sit on that space then there shouldn't be a problem. I'm guessing that you're talking about a flat screen TV with a base stand.
Answered by: MoonWoof
Date published: 2015-09-22

I want to register my LG Sound Plate LAP340

I cannot find the place to register my new product. It is not listed in a place that is obvious to me.
Asked by: JoAnn331
If you're looking for the product registration number, it's at the bottom of the barcode printed on the front of your owners manual, or call, 1-800-243-0000, USA Consumer, for assistance.
Answered by: MoonWoof
Date published: 2015-09-22

Volume does not increase

Hi, I bought a LG sound plate LP340. The volume works great with blue tooth and music on my phone, but will not work properly with the TV (Sony internet TV) The volume will only go from low to medium volume then it stops. Thanks
Asked by: Sammy10
1-800-243-0000 LG Customer information center, USA Consumer
Answered by: MoonWoof
Date published: 2015-09-22

Can the LAP340 sound plate be used with a 60PN5700, but not be expected to carry the weight of this TV? And what is the cost?

Asked by: Parlett
The LAP340 has a weight limit of 87 lbs. Search for a store in your area that carry's LG products, namely the LAP340 and then go to the store for the cost, or call them. They can also answer your questions, I'm sure, in a much more expedient manner.
Answered by: MoonWoof
Date published: 2015-09-22

What is Sound Sync?

Asked by: ACroasdale
Sound Sync simply means that you can control the volume of the Sound Plate with the remote control of your LG TV if it has Sound Sync capability. Sorry, but it's time to do that dreaded, read the owners manual of your TV or use your TV's remote to access the set-up features menu of your TV in order to see if it has LG Sound Sync capability, that is if your TV is an LG product. If not, don't worry, you'll just need to use the remote that came with your Sound Plate to operate it. No big deal. Regardless of the brand of your TV, you may wish to do as I did, and turn off your TV's speaker or keep it muted in order to enjoy the sole sound experience of your Sound Plate with it's surround sound and Cinema Sound features. Enjoy!
Answered by: MoonWoof
Date published: 2015-09-22

Does this connect to a laptop for a better sound experience?

Asked by: Lilly
Yes, just turn on the Bluetooth on LG Soundplate and then the Bluetooth on your laptop. The sound, bass quality is very good.
Answered by: Chamu
Date published: 2015-09-22


Is it typical that it takes a long time for the volume to be changed? I press the button and it takes a long time to make a change.
Asked by: ZLC123
Yes, you have to hold the volume button down for a while if the volume was completely decreased. If you see a red light blinking then it means the volume is increasing/decreasing and that it is working.
Answered by: Chamu
Date published: 2015-09-22
  • 2015-10-04T11:10CST
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