In fact, this article should have been posted a long time ago, but it has been postponed until now due to trivial matters. In order to purchase multimedia speakers, I have been struggling with various styles and brands. After layer-by-layer filtering, we decided to target 2.1 channels. Due to the limited budget and the recent negative impact of keywords (obviously there is not enough money, and there is drag on the back), we had to abandon the Harman/Kardon third-generation Jellyfish that we originally targeted, and fell in love with the avant-garde style and The Logitech Z553 also has pretty good reviews. ? The general impression of Logitech products is probably an endless supply of mice and keyboards. In fact, this major computer peripheral manufacturer headquartered in Switzerland also pays great attention to the development of multimedia peripherals. In addition to a complete network product line In addition to cameras (Webcam), multimedia speakers are also strong points; from the simplest two-piece desktop speakers to high-end 5.1-channel home theater systems, they can meet all sound output needs. The Z553 unboxed this time, in addition to its very attractive appearance, the actual performance also shows Logitech’s dedication in the research and development of speaker technology. No more nonsense, come and unbox it! ? Because I have bought it for a while, there is no drama about kicking the carton. I only have a complete packaging box that I finally found out. There is a handle on the box for easy carrying. ? The specifications of Z553 are printed on the left side of the paper box. ? There are specifications tables in three languages: Chinese, English and Korean. Here is a brief summary: ? Total wattage: 40W Input terminal: 3.5mm audio terminal x2/? RCA terminal x1 Output terminal: 3.5mm headphone jack Control unit: wired Connected type, controls power, volume, and bass unit: 2-inch unit for satellite speaker/4-inch unit for subwoofer? Have you unpacked it? There is cushioning foam in the box. In addition to protecting the speaker, it also has a dug recess. The slots allow each component to be arranged neatly, making storage more convenient. ? All the accessories for the entire speaker system are these, including: ? 2 pieces of satellite speakers, 1 piece of subwoofer, 1 piece of controller, 1 piece of double-ended 3.5mm audio source connecting cable? Let’s start with the subwoofer with a giant (eh) appearance. Introduction: It adopts a rather simple cylindrical design and is responsible for power supply, signal transmission and analysis amplification, and heavy bass generation. ? The input and output interfaces are located on the back of the speaker body. You can see a set of 3.5mm and RCA terminal input interfaces, as well as RCA terminals that output signals to satellite speakers, and an RS232 interface for connecting to a wired controller. ? From the dust filter above, you can see the upward vents, which are usually placed on the side to facilitate the reflection of heavy bass. It is rare to place them on the top of the head like the Z553. ? The 4-inch subwoofer unit adopts a ground-reflective design and is placed just below the speaker body. The heavy bass produced goes directly downwards and spreads throughout the room through the reflection of the placement surface. ? Next is the satellite speaker responsible for the full range. The Z553 is in black/red overall color. The satellite speaker is shaped like a rocket launcher and is paired with a red "beautiful back" design. It is quite atmospheric and avant-garde. The eye-catching appearance has also attracted young people to buy it. Important factor! ? Each satellite speaker is equipped with two 2-inch full-range drivers. Through the exclusive FDD2 (dual-frequency drive driver) technology, each unit complements each other to achieve the important task of perfectly interpreting the full range. ?The side of the satellite speaker is discreetly engraved with the Logitech logo. ? All connecting cables of Z553 are in red color. The left and right configuration of the satellite speakers can be judged from the RCA terminals of different colors: gray is on the left and black is on the right. ? Whether it is a subwoofer speaker or a satellite speaker, the foot base adopts a three-claw form with a rubber pyramid design, which cleverly allows the speaker to stand firmly and effectively reduces vibrations caused by various factors. ? In addition to allowing the satellite speaker's base to rotate upward up to 90 degrees, the rubber pyramid can also be removed to allow the speaker to be fixed on the wall to become a wall-mounted speaker. ? Connect the power and volume controllers of the shuttle control system to the RS232 interface of the subwoofer in a wired manner.

? There is also a subwoofer control on the rear of the controller, as well as one audio source input and one headphone output terminal. ? The included double-ended 3.5mm audio source cable can be connected to the headphone jack of various music devices, and then connected to the audio source input jack of the controller for sound playback. ? To combine the entire system device, just connect the cables between the satellite speakers and the controller according to the form (RS232) and color (gray/black) of the connection terminals, and you can easily combine them. ? After the entire speaker system is assembled, isn’t the entire shape quite avant-garde? (During self-hypnosis) The next step is to connect my brother's MBP, listen to music, watch movies, or play computer games, etc., and enjoy the wonderful auditory experience brought by Z553. ? After using it for nearly a month, I feel that although the price of Z553 is not cheap, the sound performance is worth the price compared to its price! Whether it is music performance, vocal singing, or the reproduction of movie sound effects, or even electronically synthesized sounds in computer games, the interpretation in the mid-to-high range can be said to be just right, thanks to the adjustment through FDD2 technology Satellite speakers; the deep and powerful subwoofer from the huge subwoofer constantly shocks the eardrums. This set of speaker systems is quite sufficient for those who don’t have a lot of space and require a little bit of sound quality. Especially in the treble part, you can really feel the claimed “crystal clear and translucent”, and the bass is also quite thick. Although the midrange is relatively average, for general use, the overall performance is quite excellent. ? If you want to pick out the shortcomings, the most fatal ones should be the lack of optical input, and when the subwoofer volume is fully turned up, sometimes it seems that the subwoofer suddenly "empties out" after the power is gathered to a certain extent, becoming a bit hollow. Apart from these hard-picked shortcomings, it should be difficult to find an opponent with matching capabilities among products in the same price range. In other words, when I use Z553 to listen to "Chariots of Fire" "Fire" theme song, I felt that electronic synthesis, piano and timpani can be so perfectly integrated. In addition to admiring the composer Vangelis's skill, it also proves that Z553's interpretation in various musical ranges is indeed unique.