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Logitech > 
Item#: 9SIA6502368032

Logitech Z623 200 w 2.1 Speaker System, THX-Certified

  • THX 2.1 Speakers 200 Watts
  • Quick Sound Controls
  • Built In Headphone Jack
  • RCA and 3.5mm inputs
  • Email this page
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  • newegg THX Certified The THX-Certified Logitech Z623 has gone through rigorous tests to guarantee that your home entertainment experiences is the way filmmakers, recording artists and game developers wanted them to be.
  • newegg Powerful 2.1 System Easy, two-satellite setup and a powerful subwoofer give you big sound - slamming bass, clear highs, and rich mids - even in large spaces.
  • newegg 200 watts (RMS) of Power 200-watt power offers sound as loud as you want it. You’ll hear and feel immersive audio that brings music, movies, and games to life.
  • newegg Multiple Inputs Make everything you listen to sound better with convenient RCA and 3.5 mm inputs for music, movie, and gaming devices.
  • newegg Integrated Controls You’re in command - dial the volume and bass up or down to customize your listening experience.
  • newegg Built-in headphone Jack When you want to listen privately, just plug in your headphones.

Learn more about the Logitech Z623



General SPEC

Total Power
200 w
Subwoofer RMS Power
130 w


THX-certified 2.1 speaker system brings your music, movies and games to life in immersive studio-quality audio
200 watts (RMS) gives you the power to listen as loud as you want to
RCA and 3.5mm inputs make it easy to plug in up to three audio devices—your computer, iPod, game console, DVD player and more
Two satellite speakers and a powerful subwoofer deliver sound big enough to fill even large entertainment rooms
On-speaker controls lets you easily dial the volume and bass up or down


Package Contents
3.5 mm audio input cable
Speaker connector cables
User documentation
2-years limited hardware warranty

Manufacturer Warranty

2 years limited
2 years limited

Quick Info


  • Limited Warranty period (parts): 2 years
  • Limited Warranty period (labor): 2 years

Customer Reviews of the Logitech Z623

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  • William M.
  • 12/14/2014 2:59:23 AM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsBass In Your Face

Pros: This system has epic bass, even with the bass knob in the middle. And these get very loud, very quickly. The THX certification is a warning in its own right. They know loudness, and this system has it.

Side input/output ports are super convenient for shortly-wired headphones like mine. I think they also have some kind of mechanism that prevents the undesirable "pop" that is usually caused by plugging/unplugging TRS connectors.

Dials/knobs feel resistive and reliable.

Way better than the silver Dell 2.1 speakers I had before.

Cons: The cable leading into the right hand speaker (with all the controls) is pretty short. If you use this on the computer desk, you'll probably be okay. Those wanting to use these for tall entertainment centers might not be able to center the sub.

The volume is very touchy on the low end. But this is hardly a con; how else can you fit so much volume on such a tiny dial?

Not recommended for apartments, or dorms. Unless you want either angry neighbors, or unused potential.

Other Thoughts: There can be some distortion and clipping at super high volumes, but overall the sound is crisp and deep.

These speakers lack in high treble I think. Some kind of equalizer will solve this though.

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  • Jacob S.
  • 11/20/2014 12:09:30 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsLogitech Z623 speakers.

Pros: Great materials quality, sound, and value.

Cons: None. (BIGGER SUB)! jk

Other Thoughts: Can't beat the value you get with these speakers.

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  • Lee E.
  • 11/18/2014 6:06:17 AM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsGreat set of speakers!

Pros: Great sound, fantastic bass. Works phenomenally. Can fill a room.

Cons: None that I can think of. It hasn't solved world peace yet?

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  • Alex D.
  • 11/17/2014 9:27:03 PM
  • Tech Level: Average
  • Ownership: less than 1 day
  • Verified Owner

5 out of 5 eggsBang for buck

Pros: These speakers should not sound as good as they do.

Cons: no complaints yet.

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  • Erin R.
  • 11/17/2014 8:41:10 AM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsSolid Sound for the Money

Pros: Price, performance, looks (subjective)

Cons: RT speaker cable is a VGA style plug. probably a problem if it goes bad. Also thick, hard to route.

Other Thoughts: Overall very nice speakers. Pleanty of inputs, more than enough output to shake the whole house, accurate, and not overly bassy. Bass knob does a good job and full left on it turns the subwoofer OFF. Nice

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  • Anonymous
  • 11/16/2014 2:51:39 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsSo close Logitech...

Pros: This system packs a lot of power with not that bad of a price tag. You won't find a better deal in this price range. 200 watts RMS (continuous) power. That's 35 watts per satellite and 130 watts for the subwoofer. Overall build quality is what you would expect from Logitech. Satellites feel heavy and well built. The subwoofer and it's enclosure are built like a tank, and feels about as heavy. Rubberized feet on all 3 of the components ensure that where you put them, they will stay. Volume and subwoofer control knobs are located on the right speaker for easy fine tuning. Thick long wires make it so this speaker system can suit a variety of applications. Great frequency response (20Hz - 20 KHz). Headphone and mic input controls are located on the right speaker as well for easy hookup. Speakers are also protected from damage with metal grills.
Sound quality is good despite a few drawbacks (see cons). Powerful bass from the subwoofer. The mids and highs seem nice and don't distort even at high volume. The subwoofer also has low-to-no distortion, as long as the user configures the knobs and audio device being used correctly. Embossed Logitech logo on the left speaker is a beautiful added touch. Along with the THX logos on the tweeters. Perfect for applications such as home theater, PC or console gaming, or just hooking up any music device. There are is also an AUX input (RCA R-L) to hook up anything that needs RCA patch cables or if you don't have a 3.5mm to RCA adapter. Comes with a 3.5mm to 3.5mm right angle cable which in a nice touch. All in all, a great all around system for the price.

Cons: This is a great speaker system with a few issues that Logitech really needs to address. First and foremost, the wattage on all of the speakers should be pulled more tightly together. The subwoofer is 130 watts and each satellite is only 35 watts. Meaning that when you start to crank this thing up all of the highs get drowned out by the lows (and I mean BOOMING bass). You can dial back the sub, but when you get about to the half way mark it just doesn't sound as good as it could. Even with EQ tuning and hours tinkering with gain on inputs it just doesn't equal out like it could, and should. Leaving me to say that this system is better suited for watching movies on your home theater than it is to listening to music. I know I'll catch flak for a lot of what I'm saying, but believe me. Atfer working in car audio for 7 years, and being a DJ for 15 years I've developed a little bit of an audiophile's ear. I can hear when sounds are having a conflict, and in this case they kind of are. Maybe they should have dropped the woofer to an even 100 watts, and then split the other 100 watts between the two satellites it might compensate for the big boom of the 7 inch woofer and even out the level of the frequencies.
Also they could have made the grills easier to remove. They probably aren't supposed to be removed, but the sub just seems to sound better with the giant grill off. There are methods to remove them that I have figured out (see other thoughts).
This is just nitpicking here, but I also don't really like the bass port on the subwoofer on the side. Ported subwoofers sound better when the port is in the front, firing directly at the listeniner, or on the back where it can be fired at a wall or corner of the room and refracted back all around the room. That's just my personal preference though. Don't have to agree with me, some may like it on the side. I just don't see the point.

Other Thoughts: All of the things I have said in this review I already knew before I made this purchase. I always research everything before I buy it, and knew about most of the drawback before I bought them. Just not the how bad the uneven distribution of the wattage would effect overall sound quality. I bought these as a replacement for some blown Numark studio monitors. I wanted to add a subwoofer since the monitors I had been using only went as low as 45 Hz. Being an electronic music DJ I really need to hear and feel the bass in my music. This definitely does that. I mean this subwoofer, in my small studio, will almost shake the paint off the walls. Doesn't make the neighbors happy either. That being said I just wish they would have done something about evening out the mids and highs. When connected to my Numark N4 controller, I find myself always having to turn up the mid and high knobs on the EQ of each channel during mixes. That is to be expected, and I wasn't really expecting that much out of this system. That would be "asking for the moon". Afterall the powered monitors that these replaced were almost 3 times the price.
I have, and still do connect these to my pc. Which is also my home theater. My gaming rig is actually part of my living room. These sound great when playing games and watching TV or movies. You really hear, and feel, alot of things that you never did before with the dinky little stock TV speakers. Great product, very happy with purchase. Just iron these little details out Logitech and next time I'll give ya 5 eggs.

2 out of 2 people found this review helpful. Did you? Yes No

  • Lisa C.
  • 11/15/2014 4:44:55 PM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year

5 out of 5 eggs4 years strong!

Pros: The best 2.1 speakers money can buy! (At least that I have heard). These speakers deliver so much bass, mid, and high with its 120watt sub, solid constructed mids and even comes with two tweeters mounted on top of the mids. I have owned these speakers for four years and they sound just as good as they did when I bought them. I have bought a pair for my parents a year ago and still recommend these as a must for any gamer/audio enthusiest. Nothing touches these and you pay a little extra for all of this. 60-70 dollar speakers and anything below that is trash that you will have to replace within a year with horrid sound quality. I have owned ihome and Altec Lansing previous to this and I have never felt the need to switch. Once I get a home however I will be upgrading to the z906 5.1 audo. Logitech did it right!

Cons: Over time the volume button makes static when I push it, just when I push it though. Also bass can easily over power mids, the 5.1 are the solution for this. As a desktop speaker these are great, however at a party or to entertain people the 2.1 speakers are not enough unless you turn the sub down and turn up the volume. Little distortion throughout the levels though!

Other Thoughts: If you are thinking about speakers for your computer or home t.v. do not skimp and buying 40-70 dollar speakers. I have owned these for four years and it is the only component that has moved across builds because there is nothing better! Spend the extra money now and save later when you never have to replace these.

1 out of 1 people found this review helpful. Did you? Yes No

  • 11/14/2014 5:47:07 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsYES!


Cons: Doesn't have a microphone input.

Other Thoughts: I think this would do an amazing job for house parties.

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  • David S.
  • 10/28/2014 6:44:57 PM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsGreat overall for the price

Pros: Fantastic Sound Quality!!!!
very spacious sound with virtualization and responsive bass from the subwoofer

Cons: none

Other Thoughts: Great right out of the box, delivering everything I expected and a bit more. Very Pleased

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  • Anonymous
  • 10/23/2014 4:58:48 PM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

2 out of 5 eggsTerrible Sound

Pros: Solid quality construction. Price was pretty good.

Cons: Awful sound. Very little base. Poor sound all around.

Other Thoughts: I even tried these speakers on other machines and they were still pretty bad.

0 out of 5 people found this review helpful. Did you? Yes No

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Item#: 9SIA6502368032
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