User manual YAMAHA RX-V640RDS

[. . . ] GB RX-V640RDS DSP-AX640SE AV Receiver AV Amplifier OWNER'S MANUAL MODE D'EMPLOI BEDIENUNGSANLEITUNG BRUKSANVISNING MANUALE DI ISTRUZIONI MANUAL DE INSTRUCCIONES GEBRUIKSAANWIJZING CAUTION: READ THIS BEFORE OPERATING YOUR UNIT. 1 To assure the finest performance, please read this manual carefully. Keep it in a safe place for future reference. 2 Install this sound system in a well ventilated, cool, dry, clean place -- away from direct sunlight, heat sources, vibration, dust, moisture, and/or cold. Allow ventilation space of at least 30 cm on the top, 20 cm on the left and right, and 20 cm on the back of this unit. [. . . ] The "SILENT" indicator lights up on the front panel display. (When sound effects are off, the unit reproduces the source in normal stereo. ) 1 2 Press AMP. Press d to display the information about the input signal. PRESET/CH BASIC OPERATION ­ SELECT + Notes · This feature is not available when 6CH INPUT is selected or the unit is receiving a digital signal with a sampling frequency greater than 48 kHz. · The sound from the LFE channel will be mixed and output from the headphones. I Normal stereo reproduction Press STEREO/EFFECT to turn off the sound effect for normal stereo reproduction. Press STEREO/EFFECT again to turn the sound effect back on. STEREO STEREO or EFFECT ENTER EFFECT Front panel Remote control (Format): The display shows the signal format. When the unit cannot detect a digital signal it automatically switches to analog input. in: The display shows the number of input signal source channels, as follows: For multi-channel soundtrack such as front 3 channels, rear 2 channels and LFE, the display shows "3/2/ LFE". fs: The display shows the sampling frequency. When the unit is unable to detect the sampling frequency "Unknown" shows in the front panel display. When the unit is unable to detect the bit rate "Unknown" shows in the front panel display. flg: The display shows the flag - data encoded in a DTS or Dolby Digital signal that causes this unit to automatically switch to the appropriate decoder for playback. English 27 DIGITAL SOUND FIELD PROCESSING (DSP) Understanding sound fields A sound field is defined as the "characteristic sound reflections of a particular space. " In concert halls and other music venues, we hear early reflections and reverberations as well as the direct sound produced by the artist(s). The variations in the early reflections and other reverberations among the different music venues is what gives each venue its special and recognizable sound quality. YAMAHA sent teams of sound engineers all around the world to measure the sound reflections of famous concert halls and music venues, and collect detailed sound field information such as the direction, strength, range, and delay time of those reflections. Then we stored this enormous amount of data in the ROM chips of this unit. I Recreating a sound field Recreating the sound field of a concert hall or an opera house requires localizing the virtual sound sources in your listening room. The traditional stereo system that uses only two speakers is not capable of recreating a realistic sound field. YAMAHA's DSP requires four effect speakers to recreate sound fields based on the measured sound field data. The processor controls the strength and delay time of the signals output from the four effect speakers to localize the virtual sound sources and fully encompass the listener. Hi-Fi DSP programs The following list gives you a brief description of the sound fields produced by each of the DSP programs. Keep in mind that most of these are precise digital recreations of actual acoustic environments. No. 1 Program CONCERT HALL Features A large round concert hall with a rich surround effect. Pronounced reflections from all directions emphasize the extension of sounds. The sound field has a great deal of presence, and your virtual seat is near the center, close to the stage. This is the sound field at stage front in "The Bottom Line", a famous New York jazz club, that seats up to 300 people. [. . . ] AC 230 V/50 Hz [Korea model] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AC 220 V/60 Hz [China and General models] . . . . . AC 110/120/220/240 V, 50/60 Hz · Power Consumption [U. S. A. and Canada models] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ]