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Introduction
Onkyo’s ED-901 Dolby Surround AC-3 Decoder brings your home the excitement of Dolby Surround AC-3 sound effects from your
LaserDiscs, etc. that employ the latest Dolby AC-3 technology. The ED-901 consists of an AC-3RF demodulator, an AC-3 decoder, and
a Cinema Re-EQ circuit.
An ideal AC-3 home theater system may include either an Onkyo TX-SV919THX or TX-SV828THX surround receiver. These receivers
can be connected to the ED-901 through the DB-25 connector.
What is Dolby Surround AC-3?
· Dolby Surround AC-3 is a new-generation digital audio format for multi-channel surround audio. With this digital audio format, you
can create a five full-range channel system called a “3/2” channel surround system (left, center, right, and two surround channels),
which is a developed version of the conventional “3/1” channel surround system” (left, center, right, and only one surround channel).
· Adding to its five full range channels, Dolby Surround AC-3 supports an LFE (low frequency effect) channel, which is used solely
for low frequency sounds independent of the other channels. Dolby Surround AC-3 is sometimes referred to as a “5.1” channel
format since this LFE channel is indicated as 0.1.
· This fully discrete 5.1 channel Dolby Surround AC-3 can reproduce sound of wide and dynamic range, changing your room into a
home theater.
· Currently, LaserDisc is the only medium that employs the Dolby Surround AC-3 technology. In the near future, however, Dolby
Surround AC-3 will be implemented in such media as DVD (Digital Video Disc), CATV (Cable Television), DBS (Direct Broadcast-
ing), and HDTV (High Definition Television).
Dolby Surronud AC-3
Manufactured under license from Dolby Laboratories Licensing Corporation. “Dolby”, “AC-3”, and the double-D symbol are trademarks
of Dolby Laboratories Licensing Corporation.
Copyright 1992 Dolby Laboratories, Inc. All rights reserved.