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Logitech > 
Item#: 9SIA73M3S04500

Logitech LS21 7 Watts RMS (FTC) 2.1 Stereo Speaker System - Black

  • 2.1 Speakers With 7 Watts RMS
  • Compact Satellite Speakers
  • Down-Firing Subwoofer
  • Wired Remote With Headphone Jack

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

Fill any bedroom, living room or dorm room with great sound using the Logitech LS21 2.1 speaker system. This compact setup is an economical way to add more punch to your video games or MP3s, without needing a lot of real estate for installation.

The two wired satellites feature a sleek, contemporary design that will look great with any computer or personal entertainment center. The subwoofer offers a elegant slim design that will fit most configurations and adds enough boom to bring your music, games and videos to life. You’ll feel every explosion and never miss a beat again.

For your convenience, the speaker controls are placed on a wired pod that sits discretely on your desk or tabletop. It features a large volume control dial and inputs for a headphone, which are perfect for voice over IP setups. The LS21 is also a convenient solution to giving your favorite MP3 player a sound boost with plug-and-play simplicity. Add rich, full sound to your audio lifestyle with this elegant 2.1 speaker system today!

  • newegg Balanced Sound The Logitech LS21 features high-excursion drivers that deliver clear highs, rich mids and deep lows for an immersive listening experience.
  • newegg Headphone Jack With a headphone jack built into the satellite speaker, enjoy your music in perfect privacy.
  • newegg Wired Control Centre Use the wired control centre to control volume, power, and access to your headphone and microphone with convenience.

Learn more about the Logitech LS21




Speaker System
Total Power
7 Watts RMS (FTC)
Satellite RMS Power /ea
1.5 Watts (into 4 ohms, @ 1 kHz, @ 10% THD)
Subwoofer RMS Power
4 Watts (into 4 ohms, @ 1 kHz, @ 10% THD)
Satellites: 2" high-excursion metallic drivers
Subwoofer : 4" Max-X high-excursion subwoofer

Dimensions & Weight

Satellites: 5.8" (145.9 mm) x 3.4" (84.9 mm) x 3.2" (81.7 mm)
Subwoofer: 8.4" (19 cm) x 5.5" (14 cm) x 7" (17.8 cm)


Immerse yourself.
High-excursion drivers: Give you rich mids and clear highs from compact speakers.
Down-firing subwoofer: Provides rich, deep bass to enhance movies, games, and music.

Enjoy more convenience.
Wired remote: Makes controlling power and volume easy.
Headphone jack: Lets you listen in private.
Cable management system: Reduces clutter.
Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 2 years
  • Limited Warranty period (labor): 2 years
  • Read full details

Customer Reviews of the Logitech LS21

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  • Tejas B.
  • 3/26/2016 11:21:13 AM
  • Ownership: more than 1 year
  • Verified Owner

4 out of 5 eggsGreat Product!

Pros: Really great product for the price. Solid sound and has lasted me 5 years now.

Cons: Very slight static sound comes out when on and not in use every once and a while. Nothing too bothersome though.

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  • John M.
  • 11/29/2015 5:34:21 PM
  • Ownership: 1 day to 1 week

3 out of 5 eggs$80!? Yeah Right!

Pros: They put out sound and it is barely a full sound.

Cons: Price.
These are NOT worth no 80 bucks.
Very weak speakers.

Other Thoughts: Don't get them (at this price).
They aren't worth over $25.

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  • Megan P.
  • 10/14/2015 6:49:14 AM
  • Ownership: more than 1 year

4 out of 5 eggsA fair review

Pros: I got these speakers second hand from someone for Free who probably used them for a while, and now after another 4 years, yeah, they are not AWESOME or anything but still... They work, they are reliable.

Cons: Sometimes you have to give the subwoofer a little kick to make the sound start working correctly again.

And I would NEVER pay $80 for these, which is currently what I see them listed for. Probably would give $30 for them

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1 out of 5 eggsDon't buy this speaker system - Low Volume

Pros: Price

Cons: Volume Quality, Cheap Construction

Other Thoughts: I purchased this speaker system some time ago and have been a loyal Logitech consumer (speakers, wireless keyboards/mice, cameras, etc.). I've also placed various Logitech products at my clients homes and offices throughout the years. Though I purchased it some time ago I left the system brand new in the box unopened until two weeks ago. I was disappointed when I hooked the system up to my TV to find that the TV's native speakers were louder than this speaker system and subwoofer. I thought it could be the TV, so I tested on a PC and Samsung Galaxy Tab 3. The results were the same whether it was music, video, games, etc. it was low volume quality from the speaker system. I opened a support ticket with Logitech to see if there was anything I could do to boost the volume and was told to try the standard things (ie. Can you test on multiple devices, make sure all cables are tightly connected). I had a glimmer of hope when they asked for my shipping address, but after giving them the S/N on the product they stated it was out of warranty. I was hoping they would possibly send me a refurbished newer model that has better volume quality, but they were unwilling to do anything for a loyal Logitech consumer. Since having this volume quality issue I've read so many more reviews about people having the same issue. I would stay away from this product and I'm actually going to stay away from Logitech products in general and switch to Kensington for Wireless keyboards/mice and D-Link for web cams. So sad that brands and companies are like this when they could easily satisfy their customers.

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  • eric l.
  • 10/9/2015 11:21:03 PM
  • Ownership: more than 1 year

2 out of 5 eggsLong lasting, but not good sound.

Pros: Clear mid and high range, movable volume control and headphone jack.

Cons: Bass is dull. at high volume the speakers are fuzzy and scatchy sounding. Cables provided to connect to audio port are very low quality, or the audio out on the "bass unit" is made very poor.

Other Thoughts: If you are looking for a cheap speaker system, its acceptable. but the sound isn't good at overall. I have not been impressed in any way with this sound system.

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  • Coy H.
  • 9/25/2015 11:37:20 AM
  • Ownership: less than 1 day

1 out of 5 eggsCheap and it shows

Pros: -Cheap
-Headphone pass through jack on the volume controller

Cons: -Almost no point in having the sub, bass is barely there.
-Short cables from the speakers to the sub

Other Thoughts: I bought these for some cheap speakers at the office, They are technically an upgrade from the dell soundbar on my monitor and laptop internal speakers.
I would not recommend these to anyone. I wish I had spent a little more and got some better speakers. If I put the sub under my desk I cannot tell the difference between it being turned all the way up and all the way down. I had to place it on my desktop to hear anything out of it at all, luckily it's quite small so it fits on my desk behind the monitor without problem.

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  • Trevor E.
  • 7/22/2015 5:57:15 PM
  • Ownership: 1 day to 1 week
  • Verified Owner

2 out of 5 eggs

Pros: None as far as I'm concerned.

Cons: -Quiet
-Low Bass

Other Thoughts: I bought this to replace an ancient Altec Lansing system that I had snagged for something like $30 brand new. I've used Logitech headsets, keyboards, and webcams for years without issue, so I thought this would be a no brainer. I was wrong. I should have checked the wattage of this system before I bought it because this thing is severely under-powered. The sound is unimpressive and the bass is nearly non-existent. If you're looking for a nice, decently loud sound system, don't get this one.

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  • Anonymous
  • 6/27/2015 9:39:21 PM
  • Ownership: more than 1 year
  • Verified Owner

3 out of 5 eggsCheap speakers for cheap

Pros: When I bought these they cost $30, and I got $30 speakers. They let me listen to music, etc. without headphones, and they haven't disintegrated yet.

Cons: The audio quality is nothing special. Also, the microphone jack on the external volume control doesn't have a corresponding speaker jack, so if you usually wear a non-usb headset, you're going to have to keep plugging it in in the back when you switch.

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  • Jonathan L.
  • 6/16/2015 11:00:13 AM
  • Ownership: more than 1 year
  • Verified Owner

1 out of 5 eggsyou get what you paid for

Pros: Sound flows through them
Got them cheaply when they were on sale

Cons: Bass sounds terrible
Audio quality is tinny
Annoying on/off switch

Other Thoughts: Look elsewhere

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  • Tuan B.
  • 5/26/2015 9:29:50 AM
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggs

Pros: Got these on June 29, 2013 and I am finally writing this on May 26, 2015.

Not much to say beside:

Quality Product!

Cons: None

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Item#: 9SIA73M3S04500
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