Review on Black Finish Yamaha NS-6490 Pair of 3-Way Bookshelf Speakers by Adrianna Jaroszak (A ᠌

Name: Black Finish Yamaha NS-6490 Pair of 3-Way Bookshelf Speakers
Item: Black Finish Yamaha NS-6490 Pair of 3-Way Bookshelf Speakers
Rating: 5

April 05, 2023

A good quality product, I rate this purchase perfectly.

The warming up of the amplifier, which happens periodically after the device has been on for at least an hour, is a phenomena that is not entirely understood but is very noticeable (. I spoke with seasoned music lovers about this issue and observed the forums; everyone confirms the presence of this pattern; this is not esotericism!) The sound has a hint of a Chinese tape recorder from the 1990s without allowing the amplifier to warm up. HF hiss only serves to indicate their presence.
I took the internal wiring from them and soldered the wires directly because it was attached to the speakers by knife tips (like a clip). Giving them a little bit of a modern makeover was in my own best interest, so I did it. I replaced the native wires for the bass speaker (each wire contained a section that was approximately 0.75 mm2 in diameter) with outbred flexible wire that was 2.5 mm2 in diameter. I did it to provide a more dependable electrical connection, to increase damping, and perhaps to slightly shift the tonal balance toward low frequencies.
The tonal balance sounds fine when I listen in pure direct mode without any timbres. The speakers can also be used to listen quietly without sacrificing the sound's quality.
I think this is the only closed box three-way acoustic system on the market that is this reasonably priced; I paid $600 for it in February. An extremely intriguing and unique model. I think producers would give consumers access to a greater selection of closed boxes. I advise anyone who wants to experience a ton of purportedly bass-reflex *bass* to do so in a nightclub or another place with a similar vibe. I want Zya to live in the house.

Pros

purchased a closed box of high-quality music with the intention of using it as background music, with listening sessions lasting on average between 11 and 12 hours. These function wonderfully at low volume levels, and when I set the time to 12 o'clock (14 square), the dynamics and scale are considerably more apparent. Together with these, I got an a-s 300 amplifier. They were preceded by weak and strong music centers, all of which were bass reactive and two-way. Due to the presence of a midrange speaker, which is uncommon for many, especially following affordable two-way midi systems, I would say that these speakers are detailed and expressive. Some people claim that these speakers are bright in the mids, but I would argue that the presence of a midrange speaker makes them detailed and expressive. There is no need to worry about the basses because there is enough for a system with this level of power, but I did wonder for a time if there was enough of the customary phase inverter buzz (which is no longer created). The speakers really readily reproduce the sound scene, and we can perceive the bass's structure and color as well as eliminate overtones. The buzz that was previously present has been replaced with this. It's crucial to remember that the basses were simply absent when the speakers were first set at a distance of one meter and stood erect. I then turned one speaker to face the other at an angle of around 12 to 15 degrees in order to conduct an experiment, and something happened that I could not believe. The appearance of "flesh" was defined as the existence of some sort of low-frequency resonance in the room that, from the perspective of the listener, caused an honest 1.5-times increase in the bass. About a day and a week after the system started to warm up, I noticed changes in the woofers; they got more lingering and visible. It is advisable to switch them on in antiphase and place them directly across from one another to forcefully warm them up. It warmed for two hours, during which time you could observe the oscillation of the diffusers without any rattling noises being made. The bass will begin to energize)

Cons