User manual SONY STR-DB870

[. . . ] The model and serial numbers are located on the rear panel. Record the serial number in the space provided below. Refer to them whenever you call upon your Sony dealer regarding this product. To prevent fire or shock hazard, do not expose the unit to rain or moisture. [. . . ] 1 channel signals and this is not unnatural to the ears. However, when a matrix decoder is used to create surround back speaker signals it simulates the same 6. 1 channel sound as Dolby Surround EX system in the movie theaters. This unit is equipped with a matrix decoder allowing for 6. For STR-DB870, with Virtual 3D technology, the surround back signals can be enjoyed even without an actual surround back speaker. When the center speaker is not used, it is possible to use this channel to output surround back signals. The sound characteristics of CINEMA STUDIO and the 3D sound imaging create the virtual surround back speaker, and you can enjoy the surround effect as if in the real theater. Allows you to retain a theater like environment, at low volume levels even late at night. Even at a low volume level, you can clearly hear the dialogues and adjust the volume in small steps. This function can be used with other sound field (pages 28­30). While this function is on, BASS, TREBLE, and EFFECT level rises, and D. This function does not work while MULTI/ 2CH A. No sound is output from the sub woofer when "2CH" is selected. To listen to 2 channel (stereo) sources using the front left and right speakers and a sub woofer, select "A. 1 OPT: Lights up when the source signal is a digital signal being input through the OPTICAL terminal. 2 COAX: Lights up when the source signal is a digital signal being input through the COAXIAL terminal. 3 MULTI CH IN (1/2): Lights up when MULTI CH IN (for STR-DB1070 , MULTI CH IN 1 or 2) is selected. 4 MPEG: Lights up when MPEG signals are input. : Lights up when the disc being played back contains the LFE (Low Frequency Effect) channel. When the sound of the LFE channel signal is actually being reproduced, the bars underneath the letters lights up to indicate the level. Since the LFE signal is not recorded in all parts of the input signal the bar indication will fluctuate (and may turn off) during playback. 8 SW: Lights up when sub woofer selection is set to "YES" (page 21) and the audio signal is output from the SUB WOOFER jacks. [. . . ] These parameters may not operate depending on the source or adjustments. For details, see each item in "Adjusting the level parameters" (page 35). 2) When these sound fields are selected, there is no sound output from the sub woofer if the front speaker size is set to "LARGE". However, sound will be output from the sub woofer if the digital input signal contains L. [. . . ]