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720W Hi-Fi Entertainment System with Bluetooth® Connectivity

  • CJ45

  • Black

Key Features

  • Multiple Inputs
  • Karaoke Creator
  • Bluetooth Connectivity
  • Shared Jukebox
Multiple Inputs

Multiple Inputs

Great tunes can come from a variety of sources, so this speaker system comes equipped with a standard analog stereo auxiliary input as well as two USB ports, ready to accept an external sources to conveniently play digital music.

Karaoke Creator

Karaoke Creator

Get ready to croon along with any tune: This feature suppresses the vocal frequencies of a song, making any track ready to play behind a new lead singer! It can even change the key of the song to better suit the voice of the singer*.

*Microphone not included.

Bluetooth Connectivity

Bluetooth Connectivity

Wirelessly stream music directly from your Smartphone or other compatible device for a seamless listening experience.

Shared Jukebox

Shared Jukebox

Up to three different people can connect their devices to the speaker system via Bluetooth and build a playlist on the fly, without ever interrupting the party. Pick any available song, then just add it to the queue.

Auto DJ

Multiple Inputs

Why should the guests have all the fun? When it’s time for the DJ to hit the dance floor—or just take a break—this fully automated function puts the party on “cruise control” and lets the system take over.

Total Output Power 720W
Front Speaker Output Power 240W x 2
Subwoofer Output Power 240W
Bluetooth Remote App Support (iOS/Android) Yes
USB Direct Recording Yes
Karaoke Creator Yes
Multipoint Yes
CD Yes
Tuner Yes
AUX1 Yes
USB1 Yes
USB2 Yes
Portable In Yes
Bluetooth Yes
Front Speaker System 2 Way 2 Speaker
Front Speaker Tweeter Unit 1.57"
Front Woofer Unit 6.5"
Front Subwoofer System 1 Way 1 Speaker
Front Subwoofer Unit 7"
USB 1 Yes
USB 2 Yes
Portable In Yes
AUX In (L/R) 1 (Rear)
Speaker Out System Jack
FM Radio Antenna Yes
Mic Jack Yes (1)
EQ User EQ, Standard, Pop, Classic, Rock, Jazz, Bass Blast, Football
Auto DJ Yes
Multi Jukebox Yes
Type PLL
Band FM/AM
FM Tuning Range (50kHz / 100kHz) 87.5 ~ 108.0 MHz
Memory/Erase Yes
Clock/Time/Sleep/Set Yes
Number of Discs 1
Loading Type Tray
Playable Disc Audio CD, MP3, WMA CD, CD-R, CD-RW
Playable File Format MP3, WMA
Power Consumption 80W
Standby Less than 0.5W
Remote Control Yes
Batteries AAA
FM Antenna Yes
Size (W x H x D) -
Main Speaker 13.8" x 6.4" x 9.9"
Front Speaker x 2 (WxHxD) 10.5" x 12.4" x 9.2"
Front Subwoofer 10.5" x 12.4" x 9.2"
Shipping Size (WxHxD) 42.6" x 17.2" x 12.7"
Shipping Weight 37.5 lbs
Limited Warranty 1 Year Parts and Labor
UPC 719192610934

What People Are Saying

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We're here to support you with our product.

View CJ45 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.

can i keep the speakers stacked up one on top on each?. woofer down, tweekers on top? would sound be affected by this?

Asked by: kukuku
Hello, there should be no reason why you can not. The only concern there would be is the vibration from the speakers could cause them to fall over. ^AC
Answered by: Amber C
Date published: 2018-02-15

How do I record music from my phone to my stereo system

Asked by: Trigga
Hello, you can record a various sound sources to a USB. Those include CD, USB1, AUX, PORTABLE (MP3, Notebook, etc.) and FM. You can not record from Bluetooth. For more information, please see the manual in the following link. ^AC
Answered by: Amber C
Date published: 2018-02-12

I wanna get the price for LG acessories. For the model #CJ45... Remote and antenna....

Asked by: Toon Ru400
For current pricing inquiries please reach out to your favorite electronics dealer. ^CP
Answered by: ChrisPSM
Date published: 2018-02-08

How do I get the mini shelf system to work with the tv

Asked by: Rabbit205
How you get the LG 720W Hi-Fi Entertainment System with Bluetooth® Connectivity, Model # CJ45 to work with your TV depends on what type of TV you have and what audio connections it has. If your TV supports Bluetooth, you can pair the CJ45 with it to stream audio wirelessly via Bluetooth. Refer to the instructions in your owner's manual on how to pair it with Bluetooth devices. If you have an older TV with only Analog Stereo RCA Audio Out ports, you can plug directly into the AUX In on the CJ45. If you only have an Optical Digital Audio Out on your TV, you will need a Digital/Analog Converter and an Optical (Toslink) cable to make the necessary connections...^IFV
Answered by: LGJoel
Date published: 2018-01-30

Can I connect and use a microphone while playing songs via bluetooth for Karaoke? 

Asked by: Crystal_S
The Voice Canceller function on the LG 720W Hi-Fi Entertainment System with Bluetooth® Connectivity, Model # CJ45 that suppresses the vocals on any music that you are listening to and the Key Changer function that lets you adjust the key to nine steps (4 steps higher, 4 steps lower and the original key) is available in CD, USB or the Bluetooth modes. The Voice Canceller function is only available when a microphone is connected to the unit as is the ECHO function. To initialize the Key Changer function, you will need to disconnect the microphone or change the music...^IFV
Answered by: LGJoel
Date published: 2018-01-16

How to pair this device with my playstion 4 

Asked by: Ryan2635
This would be best to pair with a compatible TV. For the proper assistance please reach out to our support team via Twitter @LGUSSupport or Facebook ^CP
Answered by: ChrisPSM
Date published: 2018-01-13

how to put the radio mode

Asked by: khen
Please see page 24 of the manual here: ^AC
Answered by: amber
Date published: 2017-12-28

How do I get it to play to my tv?? I need owners manual

Asked by: Spanky87
Please see the owners manual here: ^AC
Answered by: amber
Date published: 2017-12-23
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