Logitech Z623 Review | Home Speaker System


The Logitech Z623 are one of the most popular speakers for computers. Their main characteristics are good value for the money, fantastic performance, and skills, all confirmed with THX (Tomlinson Holman’s Experiment) certification.

Z623 is entirely the same as Z625, an upgraded version because of few extra input options. The difference is that Logitech Z623 has a single 3.5 mm and an RCA input, while Z625 has two 3.5 mm and an RCA input, plus an optical input.


  • Powerful bass
  • Nice design
  • Works with different input devices
  • Good price
  • Extremely powerful for games and movies
  • THX certificate


  • Not so good musical performance
  • Hardwired cables make the repair difficult
  • No remote control


The Logitech Z623 is a standard mid-range speaker for computers, made of two speakers called satellites and a subwoofer.

Each speaker is 8 inches tall and 5 inches thick, while the subwoofer is 11 inches tall and 12 inches wide. The subwoofer is quite heavy as well, measuring 15 pounds.

They come only in black color, which is in a matte finish, which is good because it doesn’t allow fingerprint marks. Being magnetically shielded, they don’t interfere with the screens and have rubber feet on the bottom to minimize vibrations’ effects.

The satellite speakers have an upward angle, with the top being narrow and the speaker’s bottom more comprehensive.

Being THX certified means they have gone through tests performed by cinema audio specialists to ensure the speakers produce movie sounds the way movie directors intended. To get the THX certificate, the speakers go through many lab tests to guarantee the same performance level every time. Three aspects of the audio go on the trial, such as Axial Frequency Response, Output Versus Distortion, and Vertical and Horizontal Dispersion.

The heavy and compact subwoofer holds a 3.5mm input and an RCA input for connection to the PC or a gaming console.

The right satellite has all the controls for power, volume, and bass, placed on the front for easier access. There is also an AUX input and a headphone jack to pair your headphones or some MP3 player.

The right satellite connects to the subwoofer with a large 1.85m long chunky serial cable, while the left one connects via a 1.95m long phono cable.

Both speakers have one 2.5 inch driver, covered with a metal grille. The subwoofer has a 7-inch driver, capable of dealing quite a severe bass.

The negative thing about the connectors’ placement is that if one of the speakers blows out, you can’t replace it. You also can’t use the subwoofer later. That means you won’t be able to upgrade any parts in the future, and if something goes wrong, you need to buy a new set of speakers.

Sound quality of Logitech Z623

Logitech made a wise decision to purchase Ultimate Ears (well known for making earphones) a couple of years ago, and ever since, their speakers sound better and better with every new generation.

The two satellites produce clean and crisp highs, the mid-range is broad, and the subwoofer does not overshadow them.

Even at 50 % of maximum volume, the sound is loud and fills in the room, which shows these speakers can work even in larger rooms.

When you listen to music on Logitech Z623, you realize that although the sound is ok, you can’t just sit back and relax while enjoying all the details and finesses from your favorite tracks.

It is more than evident that Z623s are born for movies. Just play some blockbusters or films with lots of action, and you will instantly get that movie theater experience. These speakers sound much better when hooked to a TV rather than on a computer.

Another field where they excel is video gaming. The audio quality is excellent, allowing you to be part of the action. You get to hear tiny details like the footsteps of someone behind you, gunshots and bullets flying through the air, explosions that make your windows shake. Just make sure the speakers’ volume is not maximum because the neighbors might think World War III has started.

The Logitech Z623, with its 3.5 mm jack or RCA input, can connect with a PC, TV, Smartphone, Tablet, Xbox, Blue-ray player, PlayStation, Wii, DVD, or Music player.


The Logitech Z623 is definitely worth the money you spend on it, primarily if you are a movie addict or spend lots of time playing video games. These small satellite speakers bring a cinema experience right to your room.

When it comes to listening to music, they are not the best speakers out there. But that also can be understood from their price.

Logitech Z623 Review | Home Speaker System
Logitech Z623 Review | Home Speaker System


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