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Comparison Sony HT-RT4 vs LG HT-906TA

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Sony HT-RT4
LG HT-906TA
Sony HT-RT4LG HT-906TA
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from $335.00
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Acoustic system
Acoustics
5.1
shelf
5.1
floor
Front (RMS)65 W/channel180 W/channel
Rear (RMS)65 W/channel180 W/channel
Centre (RMS)170 W/channel180 W/channel
Subwoofer (RMS)170 W/channel200 W/channel
Total power (RMS)600 W
1100 W /RMS/
Impedance4 Ohm
Bass reflex
Active subwoofer
Amplifier
Front65 W/channel
Rear65 W/channel
Centre170 W/channel
Subwoofer170 W
Receiver
Media format
 
CD/DVD
Progressive scan
Recorder
 /usb recording directly/
Parental control
Multimedia
 
Bluetooth
NFC
FM tuner /50 stations/
 
 
Video file formats
 
 
DVD/VCD
DivX, MPEG2
Other file formats
MP3/WMA
 
 
MP3/WMA
Audio CD
JPEG
Audio decoders
DTS
Dolby Digital
 
 
DTS
Dolby Digital
Dolby Digital Plus
Dolby Pro Logic II
Connection
Outputs
 
 
 
 
SCART
component
composite
Dolby Digital 5.1
HDMI1 pc1 pc
Inputs
USB input
linear
optical
 
USB input
linear
optical
to microphone /x2/
General
Remote control
Satellite body materialplastic
Subwoofer body materialMDF
Player dimensions (WxHxD)430x63x305 mm
Front speaker dimensions (HxWxD)115.2х28x22.5 cm
Rear speaker dimensions (HxWxD)107x8x7 cm115.2х28x22.5 cm
Centre channel dimensions (HxWxD)5x90x7 cm10x32х8 cm
Subwoofer dimensions (HxWxD)39х19х32 cm38.5х19x35.8 cm
Color
Added to E-Catalogjuly 2017june 2011

Front (RMS)

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.

Rear (RMS)

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

Centre (RMS)

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

Subwoofer (RMS)

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.

Total power (RMS)

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.

Impedance

Home theater speaker system AC impedance. Impedance matters when connected to an amplifier: if the impedance of the speaker system is less than that of the amplifier, distortion in sound is possible, if it is higher, the acoustics may sound quieter than we would like. Naturally, in the original home theater sets, the speakers and amplifier are selected with the optimal impedance ratio, so in fact you only have to pay attention to this parameter when you need to connect acoustics to a “non-native” amplifier.

Front

Rated power delivered by the built-in home theater power amplifier per front channel.

Note that in home theaters the rated power of the amplifier output to any channel (any channel, not just the front one) is usually equal to the rated power of the standard speaker installed on this channel (see above). Therefore, many manufacturers do not give the characteristics of the built-in amplifier separately at all — firstly, they are easy to determine from the information about the speakers, and secondly, when using a system with complete acoustics, these data are not required. However, information about the power of the amplifier is indispensable if you plan to use third-party speakers instead of standard acoustics. The rated power of each such speaker must not be lower than the rated power on the corresponding amplifier channel — otherwise, various undesirable phenomena are possible at high volume, from sound distortion to damage to the speaker.

Rear

Rated power delivered by the built-in home theater power amplifier per rear channel. For more information about this characteristic, see "Front" above.

Centre

Rated power delivered by the built-in home theater power amplifier per centre channel. For more information about this characteristic, see "Front" above.
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