Comparison Sony BDV-N9200W vs LG BH-9520TW

Rated output of one front channel of a home theater system. This paragraph indicates the power of the complete front speaker, however, it can also be used to determine the characteristics of the built-in amplifier — its rated power on a particular channel (not necessarily the front one), usually, slightly exceeds the power of the corresponding speaker.

Rated power in this case is the highest average (root mean square, RMS) sound power that the speaker is capable of delivering for an unlimited time, working without failures and overloads. Individual signal jumps can be stronger, but the power of acoustics is determined precisely by RMS.

The higher this indicator(regardless of whether we are talking about front or some other speakers) — the louder the speakers, the better they are suitable for large rooms. At the same time, in a small room, too high power may be unnecessary, because. operating the speaker at full volume will cause discomfort — despite the fact that powerful acoustics also have the appropriate dimensions, weight and price. More detailed recommendations on the optimal power of the speaker components, depending on the characteristics of the situation, can be found in special sources.

Rated output of one home theater rear channel. For more information about the meaning of this parameter, see "Front" above.

Rated power of one centre channel of a home theater. For more information about the meaning of this parameter, see "Front" above.

Rated power of the subwoofer supplied with the home theater. See "Front" above for details on power rating; here we note that subwoofers often have a fairly high power, because. they are designed to cover low frequencies in all audio channels.

The total power rating of all home theater speakers, including subwoofers. The value of the rated power is described in detail in paragraph "Front" above.

The ability to connect speakers to the base via a wireless interface — most often a radio. The main advantage of this connection is the absence of connecting wires, which significantly limit the movement of the speakers and can interfere, getting confused with each other and with other wires. The disadvantages of wireless speakers are often lower sound quality than wired counterparts, as well as high cost.

The phase inverter is a tube installed in the column housing and having an outlet to the surrounding space. Most often, this feature is found in subwoofers, although it can also be used in main acoustics. The length of the tube is chosen so that a signal comes out of the outlet, inverted in phase relative to the signal from the front of the diffuser. This increases the sound pressure and improves the sound of the speakers, however, it can create certain side effects (in particular, associated with the hum of the air flow in the bass reflex pipe). Therefore, the presence or absence of this function is not a clear advantage — it all depends on the preferences of the listener and the design features of a particular speaker.

Home theater support for progressive scan, namely, the ability to output a video signal with such a scan.

Initially, scanning was called a method of constructing an image on the screen of a kinescope TV. In such screens, an electron beam is responsible for the image, running around the screen and drawing each frame line by line. Different types of scanning differ in the order of these lines: with the interlaced method, the beam first draws odd lines (1, 3, ...), then even ones (2, 4, ...), and with progressive — each line in turn. The second option is considered more advanced, because. improves image quality and reduces the chance of noise and artifacts. Liquid crystal displays use other imaging methods; nevertheless, the visible features of both types of sweep are preserved for them.

Note that progressive scan is only available if progressive scan is supported not only by the home theater system, but also by the screen on which the images are displayed. On the other hand, most modern TVs meet these requirements; therefore, although it would not hurt to clarify compatibility, most likely there will be no problems with it.

A mode for watching movies originally intended to be shown in theaters. The difference between cinema and television viewing is the frame rate — 24 fps in the first case and 25 fps in the second — as a result, in a normal television show, the film is accelerated by 1 fps. The 24p mode is designed to give you the most cinematic experience when watching a movie on a TV screen — in this mode, the image is displayed on the screen at 24 fps and progressive scan (see Progressive scan). Note that in order to use this function, it is necessary that it is supported not only by the home theater, but also by the TV connected to it.