Adcom GTP-740 - Manual (Page 43)

However, selecting the proper mode can be difficult, particularly when increasingly popular digital
formats like DVD present an often-bewildering array of soundtrack options. For this reason, the
GTP-740 features automatic mode selection (or “Auto Select”) to analyze digital input signals and
process them properly. (Auto Select works
only with digital input signals.)
When you are using other inputs, you will probably need to manually select the proper operating
mode. However, the GTP-740 remembers the mode you’ve most recently used for a particular
input ^nd will automatically restore that mode when you use that input next, software permitting, of
course.
You can change modes with the menu system or with the surround mode button (# 3 on the front
panel or # 46 on the remote) when you wish to.
The GTP-740’s operating modes are:
• Dolby Digital: This mode applies only when you’ve selected one the GTP-740’s three digital-
only sources; DVD, digital RF, or digital aux. Contrary to popular belief, Dolby Digital
does not always imply a discrete 5.1, channel soundtrack. That’s because a Dolby Digital-
encoded source may have 6 separate channels of information ... or 4, or 3, or 2, or only
11 This is up to the producers of the software you’re playing. If allowed by the software,
all six channels are active.
• Cinema: Not an actual mode itself, “cinema” is an equalization (“EQ") curve designed to reduce
excessive high frequencies and the consequent harshness sometimes encountered in
movie soundtracks originally mixed strictly for theatrical release. “Cinema” can be used in
conjunction with Dolby Digital or Dolby Pro Logic.
• Dolby Pro Logic: Usable with both analog and PCM (i.e., non-Dolby digital-encoded) digital
sources, this is the surround mode of choice for most videotapes, surround-encoded TV
broadcasts, and many music CDs.
• Symphony Hall: This mode emulates the expansive space of a typical concert hall and is
available for all two-channel sources, analog as well as PCM digital. The subwoofer
channel is nof active in this mode.
I
• Stadium: Again intended only for analog and PCM digital sources, this mode re-creates the
soundfleld typical of a large outdoor sporting event with long reverberation times and
somewhat rolled-off high frequency response. Again, no subwoofer output.
• Jazz Club: An analog and PCM digital source enhancement, this mode simulates the intimacy
of a very small acoustic space. Again, no subwoofer output.
• 5 channel stereo: This makes full use of a home theater speaker array (except for the
subwoofer) vrhen playing two-channel only (analog or PCM digital) sources. It's ideal for
parties or any other time when you want to get the broadest possible sound distribution
from a non-surround encoded source.
• 2 channel stereo: Obviously, the preferred mode for traditional two-channel listening. This
mode is available for both analog and digital sources. In fact, the GTP-740 may even
“auto switch” to 2 channel stereo mode — even for a Dolby Digital source when it
contains only stereo or mono soundtrack information.
42