User manual ROTEL RMD-90

[. . . ] Take the unit to a qualified service person for inspection and necessary repairs. Read all the instructions before connecting or operating the component. Heed all warnings and safety information in these instructions and on the product itself. You must allow a minimum 10 cm or 4 inches of unobstructed clearance around the unit. [. . . ] The left channel signal is sent, unchanged, to the front left and surround left speakers. the right channel is sent to the front right and surround right speakers. 7CH Stereo: This mode is the same as 5CH Stereo described above except that it also distributes stereo signals to center back speaker(s) installed in the system. Unlike all of the formats mentioned above, the RMD-90 offers four surround modes that are not part of a specific recording/playback system. These modes (DSP 1­4) use digital signal processing that adds special acoustic effects to any signal. DSP processing can be used with Dolby Surround recordings, Dolby Digital recordings, CDs, radio broadcasts, or any other source material; however, typically DSP settings would be used with source material for which there is no specific surround decoder. The four DSP MODES in the RMD-90 use digital delay and reverberation effects to simulate progressively larger acoustic environments with DSP 1 being the smallest type of venue (such as a jazz club) and DSP 4 being a large venue (such as a stadium). Typically used to add ambience and a sense of space when listening to music sources or other sources that lack surround sound encoding. Several other digital formats are not surround sound formats at all, but rather systems for digital 2-channel recordings. PCM 2-channel: This is an uncompressed 2-channel digital signal such as that used for standard CD recordings and some DVD recordings, particularly of older films. hDCD ® : This system uses higher bit rates and a variety of enhancements to improve the sonic performance compared to standard audio CDs. Manual settings available from the front panel and/or the remote might be used when you want to play: · Decoding of digital sources connected to the digital inputs is generally automatic, with detection triggered by a "flag" embedded in the digital recording telling the RMD-90 what decoding format is required. Dolby Digital Surround EX recordings also trigger automatic decoding (although not all Surround EX DVDs have the necessary flag and may require manually activating Surround EX decoding). 1 channel systems configured with center back speaker(s) and will ensure proper extended surround decoding of all multichannel digital signals, even those that might not otherwise trigger the proper extended surround mode. Additionally, you can configure a default surround mode for each input using the INPUT SETUP menu (see the Setup section of this manual). 1 and DTS, this default surround setting makes operation of the RMD-90 surround modes totally automatic. For example, if you set Dolby Pro Logic II movie mode as the default for all of your video inputs, the RMD-90 will automatically decode Dolby Digital 5. 1 and DTS soundtracks when they are played and use Pro Logic II matrix decoding for all other recordings. For stereo inputs such as CD and Tuner, you could select STEREO mode as the default for 2-channel playback or Dolby Pro Logic II music mode if you prefer to hear music sources in surround sound. As described in the previous section, the combination of auto-detection of Dolby Digital and DTS recordings and setting default surround modes for each input during the setup of the RMD-90 makes operation of surround modes totally automatic. For many users, this automatic surround mode selection will meet all of their listening needs. For users who prefer a more active role in setting surround modes, buttons on the remote and the front panel provide manual selection of surround mode that are not automatically detected or, in some cases, to override an automatic setting. [. . . ] If the entered password is correct, the current settings will be saved as the new USER DEFAULT settings. To return to the MAIN menu without saving changes, change all entries on the screen to NO and press ENTER. If there is insufficient memory to store a USER DEFAULT configuration file, the SET USER DEFAULT option will not be available. 5 To exit the PASSWORD screen without changing the password, highlight the DEFAULT SETUP MENU line and press ENTER to return to the previous screen. [. . . ]