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700W 2.1ch Mini Shelf System with Built-in Subwoofer and Bluetooth®

  • CM4550

Key Features

  • 700W
  • Auto DJ
  • Bluetooth®
  • Dual USB
  • Sound Sync Wireless (Bluetooth)
  • CD Player


Searching for powerful sound? Look no further than this LG audio system which pumps out a commanding 700 watts of audio, more than enough to fill your room with booming tunes.

Auto DJ

Auto DJ

Auto DJ virtually eliminates the gaps between songs, so the party never has to stop for you and your guests. People will think you hired a DJ for the night!



Wirelessly stream music directly from your Smartphone or other compatible device for a seamless listening experience.
Disclaimer: Interoperability and compatibility among Bluetooth devices may vary.

Dual USB

 Dual USB 

Two USB inputs allow you to connect multiple USB-enabled devices at the same time, for greater convenience. You can also transfer files from one USB drive to another, and record from different inputs including CD, AUX and FM radio.

Sound Sync Wireless

Sound Sync Wireless

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

CD player

CD player

Still enjoy playing compact discs? This LG mini shelf system features a CD player so you can spin your favorites as well as the discs your friends bring over.

Output Power - Front 230W x 2
Output Power - Subwoofer 240W
Front Speaker System 2 Way
Front Speaker Tweeter Unit 1.57"
Front Woofer Unit 6.5"
Subwoofer System 1 Way
Subwoofer Unit 7"
Front Speaker Output Power 230W x 2
Subwoofer Output Power 240W
CD Yes
Tuner Yes
USB1 Yes
USB2 Yes
Portable In Yes
Bluetooth Yes
Number of Discs 1
Loading Type Tray
Playable Disc Types Audio CD, MP3, WMA CD, CD-R, CD-RW
Playable File Formats MP3, WMA
Portable In Yes
AUX In (L/R) Yes (1)
Speaker Out System Jack
FM Radio Antenna Yes
EQ Standard, Bypass Pop, Classic, Rock, Jazz, Natural, Auto, Bass Blast, Loudness, MP3 Optimizer, Football, Regueton, Merengue, Cumbia, Salsa, Samba
Auto DJ Yes
Tuner Type PLL
Band FM
FM Tuning Range (50kHz / 100kHz) 87.5 ~ 108.0 MHz
Memory/Erase Yes
Clock/Time/Sleep/Set Yes
Remote Control Yes
FM Antenna Yes
Power Consumption 80W
Standby < 1W
Front Speaker (W x H x D) 10.5" x 12.0" x 10.4"
Subwoofer (WxHxD) 10.5" x 12.0" x 9.1"
Subwoofer Net Weight 10.4 lbs
Shipping Dimensions (WxHxD) 48" x 14.5" x 12.9"
Net Weight 30.6 lbs
Main Speaker 8.0" x 12.0" x 10.7"
Front Speaker Net Weight 6.8 lbs x 2
Shipping Weight 37.5 lbs
Power Consumption 80W
Standby Mode < 1W
Limited Warranty 1 Year Parts and Labor
UPC 719192598720

What People Are Saying

Rated 5 out of 5 by from Keep repeating ! Own a unit in my living room. Surround sound hooked to 2 polk floor speakers. Own the same type of 700w unit in my bed room, surround sound hooked to polk shelf speakers. Love my music. Need I say more!
Date published: 2018-02-18
Rated 4 out of 5 by from easy to set up bought for my husband. just wish it had AM radio band also
Date published: 2018-02-03
Rated 1 out of 5 by from Dumb Who makes a stereo without any way of using headphones? What kind of dumb move is that?
Date published: 2018-01-24
Rated 1 out of 5 by from sucks I bought this at best buy 8mos ago... dead... screen reads s-protect... I will never buy their products again.
Date published: 2018-01-23
Rated 5 out of 5 by from Best stereo ever! I have had this product for over a year and I love it.
Date published: 2018-01-18
Rated 5 out of 5 by from A very large mini. I've had this only a couple of weeks. I have used all functions and am pleased with all. Really great stereo.
Date published: 2018-01-02
Rated 1 out of 5 by from Merry Christmas 2017 - NOT cm4550 does not support headphones. Drummers need headphones. I am very unhappy and will be returning my product to WalMart asap and writing this information on a review so no one else makes "my" mistake. Very unhappy. They say headphones can be used on smart device, and I say "duh" because headphones could ALWAYS be used on smart phones!!. Telling me that I can use headphones on smart phone, and run smart phone to unit to use unit as speakers... why use the unit at all if I am going to be using headphones??? Stupid product!
Date published: 2017-12-25
Rated 4 out of 5 by from i wish this was in canada if any one now where in canada i can puy this
Date published: 2017-12-17
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We're here to support you with our product.

View CM4550 Product Support

Contact us for any support inquiries.


Ask your questions. Share your answers.
Please first review the detailed product information and help guides in the Product Support section for this product prior to posting a question.

I have Bluetooth headset. How do I connect it to LG model CM4550

Asked by: Fisher60
You can not connect a Bluetooth headset to this unit. Both are for input and can not transmit to each other. ^AC
Answered by: Amber C
Date published: 2018-02-12

I have a regular headphone. I plugged it in but the sound does not come through. How or what should I do to fix this

Asked by: Fisher 60
The LG 700W 2.1ch Mini Shelf System with Built-in Subwoofer and Bluetooth&reg;, Model # CM4550 does not have a headphone jack on it. It sounds like you plugged your headphones into the Portable In on the front of the unit which is designed for plugging in portable devices to play through the CM4550. It will not work for headphones...^IFV
Answered by: LGJoel
Date published: 2018-02-07

My LG sound is writing S-PROTEC so when I open the volume it switches itself what's the problem?

Asked by: mjovo
Hello, we are not showing that is a message out unit shows. If you are in the USA, please contact us at 1-800-243-0000, if not, please reach out to your LG support. ^AC
Answered by: Amber C
Date published: 2018-02-05

The FM antenna won't pick up any stations. What kind of fm booster antenna can I get to help?

Asked by: Molly sue
Regrettably, FM boosters are not products that we manufacture. Please contact your local Consumer Electronics Retailers for advice on the types of FM booster they have available that you can use with the LG 700W 2.1ch Mini Shelf System with Built-in Subwoofer and Bluetooth&reg;, Model # CM4550 that will suit your needs and work in your area...^IFV
Answered by: LGJoel
Date published: 2018-02-02

I have an older model flat screen LG tv, just received this system. Aux cords aren't working. Can't find anything in audio settings on tv. How would I connect this? USB? That optical port thing?

Asked by: LotusNyx
Look on the back of your TV &amp; see if you have an optical digital output connection. If so, you will need a converter box. My LG TV is older but apparently one of the first models with the digital output. Once you get the converter, it'll work great and you won't disappointed. (These converters will also allow you to use headphones with this system, despite it not having a headphone jack!)&nbsp;
Answered by: Lmdriver04
Date published: 2018-01-20

I bought this unit and no remote came with it. How can I get the remote for it.

Asked by: Jammon79
Hate to hear Jammon79. Please come talk to us on Twitter at @LGUSSupport, on Facebook at @LGUSSupport or give us a ring at 1-800-243-0000 so we can assist. ^AC
Answered by: amber
Date published: 2018-01-15

Bluetooth won&rsquo;t connect anymore&nbsp;

Asked by: Whereyallat
Hi Whereyallat, we would need more information to answer you question. Please give us a ring at 1-800-243-0000 so we can assist. ^AC
Answered by: amber
Date published: 2018-01-15

Recently bought this, and when we set it up the 2 speakers work, but the subwoofer doesn&rsquo;t. How do we get that to also work?

Asked by: Jackierobinson42
For instructions on how to connect the subwoofer please refer to page 15 of the owners manual which you can find here: ^CP
Answered by: ChrisPSM
Date published: 2017-12-29
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