Proficient Audio Systems M80, Инструкция по установке и эксплуатации

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OPERATING ThE M80
LISTENING MODES
The M80 can decode and process over a dozen different Listening Modes. Listening Modes are processes for decoding multichan-
nel and surround audio from digital sources, simulating surround effects in stereo speaker configurations, ‘synthesizing’ surround
sound for legacy two-channel audio sources (digital and analog stereo sources) and oh yes, it can play good old fashioned stereo.
The M80 also provides a discrete 7.1 channel Multi-Input for a device with a discrete multichannel analog output.
Availability of Listening Modes is determined by a number of factors including: original content (encoded vs un-encoded), play-
back device connection, (analog vs digital) and speaker configuration, (5.1 vs 7.1). Not all modes are available for all sources and
content. The M80 can be configured to automatically detect encoded content and automatically select the ‘native’ process, some
modes can be set as preferences, by source, for certain types of content or connections, and all available modes for a given con-
figuration can be selected manually.
Listening Modes are selected by pressing the Surround buttons on the M80 Front Panel or Remote or by using the OSD Listening
Mode Menu. The currently selected Listening Mode will be indicated on the lower line of the Front Panel Display and in the OSD
Listening Mode Menu. Listening Mode Setup is located in the OSD Setup Menu under Listening Mode Setup.
Listening Modes from DVD Menus
Listening Mode availability can be affected by the menu settings on Blu-ray and DVD-Video Players. Some discs feature multiple
audio mode options and selection of these options will affect what Listening Modes are available to the M80. For example, if a
DVD-Video Disc with Dolby Stereo, Dolby Surround and DTS encoding is loaded to a DVD player, the player may default to Dolby
Stereo. If so, and the M80 Listening Mode defaults are set to Automatic Selection, the M80 will select Dolby Stereo as the Listening
Mode. (If a preference has been set for Dolby Digital 2 Channel, it will be selected as the Listening Mode.) In order to take advan-
tage of the Dolby Digital 5.1 Surround encoding, it will be necessary to open the DVD Disc Menu and manually select the surround
mode. (See DVD Player Manual for additional information.)
The same is true for a disc with Dolby and DTS encoding. If the DTS encoding is preferred, depending on the disc, the player and
how the M80 Listening Mode Setup is configured, it may be necessary to open the DVD Disc Menu and manually select the DTS
Surround encoding.
Blu-ray Player Setup
Many Blu-ray Players have on-board decoding capability for Dolby or DTS encoded audio content. If so, the player may decode the
audio content and output it as a PCM bitstream. When this occurs, the M80 Front Panel Display will indicate: Multi-ch PCM. This
indicates that the Blu-ray Player has decoded the audio content before outputting it to the M80 over the HDMI connection. The
Blu-ray Player Setup can be changed to output the encoded Dolby or DTS audio content to the M80, allowing the M80 to decode
the audio content. (The Blu-ray Player may have two or three options for decoding digital audio output. There will be no difference
in sound quality when the decoding is done by the Blu-ray Player or by the M80. However, depending on the player and the de-
coding process selected, some elements of the audio content may be affected by or absent from the decoded PCM stream coming
from the Blu-ray Player. Please refer to the Blu-ray Player manual for additional information.) When the M80 is decoding the audio
content, the M80 Front Panel Display will indicate: DTS-HD MSTR, DTS, Dolby TrueHD , Dolby D, etc.
If a Blu-ray Disc or DVD-Video Disc indicates it has a specific type of audio encoding, the M80 Listening Mode settings are config-
ured for automatic selection and the Front Panel Display does not indicate the appropriate mode, or if the stated encoding mode
is not available to manual Listening Mode selection, check the Blu-ray or DVD Player Setup Menu, the Disc Setup Menu and M80
Source Setup until the appropriate settings and connections are selected to allow processing of the ‘native’ audio encoding.
There are no absolutes for Listening Mode settings and not everything has to be played in a surround mode. Setting the M80 for
automatic selection and letting everything play in its natural format is recommended. The best selection is what sounds good to
the listener...and sometimes that might even be good old stereo! The M80 cannot be damaged by selecting Listening Modes, so
feel free to change settings to get familiar the different modes and decide which ones are right for the content being played.
Important Warning
Listening to multichannel audio is very different from standard two-channel (stereo) audio. With the dynamic range of multichan-
nel digital audio played through six (5.1 configuration) or eight (7.1 configuration) speakers, it is easy to achieve high SPL’s (Sound
Pressure Levels) in a given environment. Long term exposure to high SPLs can cause hearing loss. The purity of digital audio when
reproduced by high quality amplification, such as the M80, and played through quality, dynamic loudspeakers, will not sound
distorted. That clarity can be misleading. Be careful to not drive this dynamic, multi-speaker system to unnecessary levels.