
Upgrade Your Home Entertainment: LG SN4 Soundbar Review And Specification
With the age of ultra-thin TVs and dazzling visual quality, sound tends to be an afterthought. That’s where soundbars like the LG SN4 step in, offering an improved entertainment experience without requiring a drain on your wallet. Spending a couple of weeks with the LG SN4 Soundbar, I’m now ready to present my in-depth review of this highly sought-after audio solution.
Unboxing and First Impressions
The LG SN4 Soundbar is delivered in an adequately packaged unit that includes the primary soundbar unit, a wireless sub, remote control, optical cable, and manual. The slim form factor grabs one’s attention immediately – at 890 x 57 x 85 mm for the primary unit and 171 x 390 x 261 mm for the sub, it achieves a presence-discretion balance. The matte black color with the metal grille presents it with a high-end aesthetic that will blend with most current TV configurations.
At 2.1 kg for the base unit and 5.3 kg for the subwoofer, the system is well built without being unnecessarily heavy. The soundbar itself is thin enough to fit nicely in front of most TVs without obstructing the bottom of the screen or IR sensor.
Setup and Connectivity
Installing the LG SN4 Soundbar is incredibly easy. The wireless subwoofer automatically connects to the main unit when both are turned on, avoiding cable mess between units. Wireless convenience like this is a major selling point, as it lets you position the subwoofer anywhere in your room within reasonable distance.
The connectivity features are surprisingly diverse for a soundbar at this price point. You have:
- 1 HDMI input
- 1 HDMI output with ARC (Audio Return Channel)
- Optical input
- USB port
- Bluetooth 4.0
The addition of HDMI ARC is particularly worthy of note as it makes the soundbar controllable using your TV remote when plugged into compatible TVs and helps eliminate remote clutter. The Bluetooth operation is seamless for streaming music from tablets and smartphones, although audiophiles will point out that it employs the lesser SBC/AAC codecs as opposed to more advanced ones such as aptX.
Sound Performance
Where the LG SN4 Soundbar Review And Specification really matters is in how well it sounds, and this 2.1 channel system with a 300W total output power provides a real step up from TV speakers.
The sonic signature tilts toward clarity in the midrange, which is advantageous for dialogue-rich content such as news, talk programs, and most TV shows. Voices emerge with remarkable definition, seldom being overwhelmed by background scores or sound effects. That alone makes the SN4 well worth consideration for anyone who has trouble hearing dialogue on television.
The wireless subwoofer’s carbon woofer technology manages bass duties impressively, lending significant low-end presence that flat-panel TVs can’t possibly muster. It may not rattle your foundations the way more expensive systems can, but it brings sufficient rumble to explosion-plentiful action movies and warmth to music listening.
Where the system reveals its budget constraints is with the higher frequencies and soundstage width. Treble sometimes is a little bright at louder levels, and overall soundfield, although definitely wider than TV speakers, doesn’t quite produce the immersive “surround” one gets from pricier soundbars.
LG SN4 Soundbar features several sound modes that really make the listening experience:
- AI Sound Pro: Automatically tweaks audio settings in accordance with the type of content
- Standard: Balanced audio for everyday watching
- Bass Blast/Bass Blast+: Increases low-end tones for action flicks or music with heavy bass
The AI Sound Pro capability is worthy of special commendation, as it automatically adjusts according to what you’re watching. From news coverage to an action film, you’ll find clever but subtle tweaking that maximizes dialogue clarity or enhances dramatic moments as needed.
User Experience
Daily use of the LG SN4 is delightfully straightforward. The remote control included is small but effective, with distinct buttons for volume, input sourcing, and audio modes. On-screen feedback for input selection and volume adjustments is given through the front LED display, although it could be made brighter for easier viewing from afar.
For those who prefer a smartphone interface, the LG SN4 Soundbar is compatible with LG’s Sound Bar app (Android only, with limited iOS support). The app offers more detailed control over settings than the remote, although it’s not necessary for everyday use.
One of the most convenient features for LG TV owners is the TV Sound Sync function, which enables seamless integration between compatible LG TVs and the soundbar. The CEC (Consumer Electronics Control) implementation, branded as “Simplink,” also works well with most modern TVs, allowing basic soundbar control through your existing TV remote.
Power consumption is low at 23W for the main unit and 33W for the subwoofer in use, reducing to below 0.5W each when in standby.
Audio Format Support
The LG SN4 Soundbar Review And Specification boasts excellent format compatibility for its price. It supports Dolby Digital, DTS Digital Surround, and even DTS Virtual technology, which tries to generate an enveloping sound from the 2.1 channel configuration. This virtual surround processing performs fairly well in decent rooms, lending height and width to the soundstage, but of course can’t match the accuracy of a multi-speaker setup.
Support for AAC ensures that your Apple devices will play at good quality, although as previously noted, the lack of premium Bluetooth codecs might disappoint some sound enthusiasts.
Value Proposition
At its normal retail price, the LG SN4 is great value for money in the entry to mid-range soundbar market. When considering the LG SN4 Soundbar, you need to look at what you’re getting: a 300W 2.1 channel system with wireless subwoofer, various connection options, and smart sound processing capabilities.
Compared to other similarly priced competitors, the SN4 generally has superior build quality and more stable wireless subwoofer performance. Having both HDMI ARC and optical connections also offers flexibility that some budget competitors don’t provide.
LG SN4 Soundbar Complete Specifications
Category | Specification |
---|---|
GENERAL | |
Number of Channels | 2.1 |
Output Power | 300 W |
Number of Speakers | 3 EA |
DIMENSIONS (W×H×D) | |
Main Unit | 890 × 57 × 85 mm |
Subwoofer | 171 × 390 × 261 mm |
WEIGHT | |
Main Unit | 2.1 kg |
Subwoofer | 5.3 kg |
Gross Weight | 9.4 kg |
CONNECTIVITY | |
HDMI In | 1 |
HDMI Out | 1 |
Optical | 1 |
USB | 1 |
Bluetooth Version | 4.0 |
Bluetooth Codec | SBC/AAC |
HDMI SUPPORTED FEATURES | |
Pass-through | Yes |
Audio Return Channel (ARC) | Yes |
CEC (Simplink) | Yes |
AUDIO FORMAT SUPPORT | |
Dolby Digital | Yes |
DTS Digital Surround | Yes |
DTS Virtual | Yes |
AAC | Yes |
SOUND EFFECTS | |
AI Sound Pro | Yes |
Standard | Yes |
Bass Blast / Bass Blast + | Yes |
KEY FEATURES | |
Carbon Woofer | Yes |
Wireless Subwoofer | Yes |
TV Sound Sync | Yes |
Bluetooth Streaming | Yes |
CONVENIENCE | |
Remote App – iOS | Limited Support |
Remote App – Android OS | Yes |
POWER | |
Power Consumption (Main) | 23 W |
Power Off Consumption (Main) | 0.5 W ↓ |
Power Consumption (Subwoofer) | 33 W |
Power Off Consumption (Subwoofer) | 0.5 W ↓ |
INCLUDED ACCESSORIES | |
Remote Control | Yes |
Warranty Card | Yes |
ADDITIONAL INFO | |
Security Update Support | 2 years from product launch date |

Overall ⭐ Rating: 4.2/5
The LG SN4 deservedly receives a solid 4.2 out of 5 stars with great value, good audio quality, and flexible connectivity in a stylish package.
Customer Feedback Reviews Table 📝
User Name | Rating | Review Comments |
---|---|---|
AudioFan92 | 4.5/5 | “Transformed my TV viewing experience. Dialogue is crystal clear now, and the bass adds so much depth to movies. Easy setup was a bonus!” |
HomeTheaterBuff | 4/5 | “Good value for money. Not audiophile quality but a massive upgrade from TV speakers. Wireless subwoofer works flawlessly with no dropouts.” |
TechReviewer | 3.5/5 | “Solid performance for the price. Wish it had Wi-Fi connectivity and more advanced EQ options, but sound quality is good enough for most users.” |
MovieLover45 | 5/5 | “Perfect for my apartment! Neighbors haven’t complained despite powerful bass, and I can finally hear whispered dialogue in movies.” |
StreamingQueen | 4/5 | “Great for both TV shows and music streaming. The Bluetooth connection is stable and setup took less than 10 minutes.” |
Pros and Cons
Pros:
- Wireless subwoofer provides excellent bass with flexible placement
- Easy setup with automatic subwoofer pairing
- 300W total power delivers room-filling sound
- AI Sound Pro adapts audio settings to content type
- Multiple connectivity options including HDMI ARC
- Bluetooth streaming works reliably
- Excellent dialogue clarity
- Good value for money
Cons:
- Limited soundstage width compared to higher-end models
- Treble can sound harsh at maximum volumes
- Basic Bluetooth codecs only (SBC/AAC)
- Remote could be better designed
- App support for iOS is limited
Final Verdict
The LG SN4 Soundbar strikes the right balance for shoppers who want to seriously enhance their TV audio experience without breaking into the premium soundbar price category. Its most impressive features are its dialogue clarity, wireless subwoofer convenience, and accommodating connectivity options that ensure compatibility with almost any current TV system.
Where the SN4 truly excels is in daily use – viewing news, television programs, and mass-market movies. The AI Sound Pro function eliminates the necessity for constant adjustment by hand, making this a great option for consumers who desire superior sound without sophistication.
For the cost, few alternatives deliver the same power, features, and usability. Other notable options include:
- Samsung HW-T550, offering similar features at the same price but with a different sound profile
- Sony HT-S350, with more energetic bass but fewer connectivity options
The LG SN4 is most appropriate for:
- Those living in apartments who need improved TV audio without disturbing neighbors
- Users who value clarity of dialogue
- People with medium-sized living rooms (15-25 square meters)
- Budget-conscious consumers who still value brand reliability
- Individuals who appreciate easy setup and use
It will not appeal to audiophiles seeking top-quality sound reproduction or those desiring genuine surround capabilities. However, for the majority of users wishing to move on from TV speakers, the LG SN4 Soundbar Review And Specification presents a product that does exactly what it promises: much improved sound with little inconvenience at a fair price.
If clear dialogue, wireless convenience, bass, and ease of use are your priorities, then the LG SN4 should be given serious consideration as your next audio upgrade.
FAQs: LG SN4 Soundbar
Q: How difficult is it to set up the LG SN4 Soundbar?
A: The setup is quick and straightforward. The wireless subwoofer automatically connects to the main soundbar once both are powered on, typically taking less than 10 minutes. Simply connect the soundbar to your TV via HDMI ARC or the included optical cable, plug in both units, and enjoy enhanced audio.
Q: Can I wall mount the LG SN4 Soundbar?
A: Yes, it’s wall-mountable. Although brackets aren’t included, they are available separately. The soundbar has mounting points on the rear for secure installation. Its compact design also allows it to sit neatly in front of most TVs.
Q: Is the LG SN4 compatible with non-LG TVs?
A: Absolutely. It works with any TV that has an HDMI ARC port or optical output—brands like Samsung, Sony, Vizio, TCL, Hisense, and others. Some advanced features like TV Sound Sync may require an LG TV, but basic operation is universal.
Q: How do I adjust the volume?
A: You can use the remote control, your TV remote (if connected via HDMI ARC), the buttons on the soundbar, or the LG Sound Bar app. LG TV owners can utilize TV Sound Sync for seamless control.
Q: Can I stream music from my phone?
A: Yes, via Bluetooth 4.0. Pair your device, select “LG SN4,” and stream your favorite tunes wirelessly within approximately 30 feet (10 meters).
Q: Does the subwoofer need to be wired to the soundbar?
A: No. The subwoofer is wireless—powered via a plug, and it communicates wirelessly with the soundbar, allowing flexible placement anywhere in your room.
Q: Is there a night mode for watching TV quietly?
A: While there’s no dedicated “Night Mode,” you can reduce bass or lower the subwoofer volume manually. The AI Sound Pro mode also helps to automatically minimize volume spikes, ideal for late-night viewing.
Q: How do I fix audio sync issues?
A: Use the AV Sync adjustment by repeatedly pressing the “Sound Effect” button until “AV SYNC” appears. Adjust the delay (0–300ms) with the volume buttons until audio and video match, especially helpful with Bluetooth or external devices.
Q: How do the sound modes differ?
A:
- AI Sound Pro: Automatically analyzes and adjusts sound based on content.
- Standard: Balanced for general viewing.
- Bass Blast/Bass Blast+: Emphasizes low frequencies for action movies or bass-heavy music.
Select modes via the “Sound Effect” button.
Q: My subwoofer isn’t working or won’t connect. What should I do?
A:
- Ensure both units are powered on.
- Check that the LED on the sub is steady green.
- If flashing, re-pair by holding “Mute” on the remote, then “Pairing” on the sub.
- Power cycle devices by unplugging for 30 seconds.
- Move the sub closer during pairing.
Most issues resolve with these steps.
Q: Can I connect multiple devices (like a gaming console) at once?
A: Yes, using the HDMI input and ARC port, you can connect your TV and additional devices (game consoles, Blu-ray players) simultaneously. Switch sources via remote or controls.
Q: What is the warranty?
A: Typically, a 1-year limited warranty covers manufacturing defects for both the soundbar and wireless subwoofer. Check your warranty card or contact LG support for specifics in your region.
Q: Can I add extra speakers for surround sound?
A: The LG SN4 is a 2.1 system and doesn’t support adding rear speakers. For expandability, consider models like LG SN7Y or SN9YG, which support rear wireless speakers and more advanced surround setups.
Q: How do I update the firmware?
A: Download the latest firmware from LG’s website onto a FAT32-formatted USB drive, insert it into the soundbar’s USB port, and follow on-screen prompts. The device will update and reboot automatically.
Q: What if there’s no sound from my LG SN4?
A:
- Check power and input source.
- Increase volume or ensure mute is off.
- Confirm connection cables are secure.
- Verify the TV audio output settings are correct.
- Restart the system by unplugging it for 30 seconds.
Q: Can I control the soundbar with voice assistants like Alexa or Google Assistant?
A: Not directly. The LG SN4 doesn’t have built-in voice control. However, if integrated with a smart TV or streaming device that supports voice commands, you might control basic functions indirectly (e.g., adjusting volume via Alexa with compatible setups).
If you have further questions, consult the user manual or contact LG support for assistance!
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