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RSP-1580 SURROUND SOUND PROCESSOR
Playback buttons
H
These buttons provide basic control functions for iPod/USB AUDIO
playback.
PLAY
/
button: Start playing the select media
STOP
.
button: Stop current playing track, press
/
button to resume
Push STOP key for 5 seconds to safely remove the
USB device from the front socket.
PAUSE
,
button: Temporarily suspend play
PREVIOUS
{
button: One push -Skip to start of current track
Two pushes Skip to previous track.
NEXT
}
button: Skip to next track.
SUB Button
C
Used to display the subwoofer level. Use the UP/Down keys to adjust
value.
CTR Button
C
Used to display the center channel level and group delay. Use the
UP/Down keys to adjust value.
REAR Button
C
Used to display the rear surround and center back channel level. Use
the UP/Down keys to adjust value.
P-EQ Button
F
Used to display the EQ Frequency level and GAIN. Also can be used
for temperary adjustments of EQ. Push P-EQ button and use the UP/
Down keys to adjust value. Use the LEFT/RIGHT keys to skip to the
next frequency. For permanent EQ and GAIN adjustments, please
enter the value in the EQ setup menu.
RND Button
I
This button can be used for the front USB connection and put the music
played in random/shuffle mode.
MEM Button
This button does not operate with the RSP-1580.
SURROUND SOUND
To get the best performance from your unit, it helps to understand the
many surround sound formats available today, to know which decoding
process to use for a particular recording, and how to select it. This section
provides basic background information about surround sound formats. The
following sections provide detailed operating instructions for automatic
and manual selection of surround modes.
Overview of Surround Format
Dolby Surround & Dolby Pro Logic II
The most widely available surround sound format for consumer audio/
video is Dolby Surround®, available on nearly all commercial VHS
tapes, many television broadcasts, and most DVDs. Dolby Surround is
the consumer version of the analog Dolby Stereo system first introduced
in the film industry in 1972. It is a matrix-encoding system that records
front left, front center, front right, and a mono surround channel into
a 2-channel stereo recording. During playback, a Dolby Pro Logic®
or Pro Logic II decoder extracts each channel and distributes it to the
appropriate speakers.
The original Dolby Pro Logic decoder delivered a mono signal with
reduced high-frequency content to the surround speakers. A more advanced
decoder in the processor, Dolby Pro Logic II, increases the separation and
frequency response of the surround channels for significantly improved
performance with Dolby Surround encoded recordings.
Dolby Pro Logic II decoding should be used for any analog recording
labeled “Dolby Surround” or any Dolby Digital 2.0 soundtrack. Dolby
Pro Logic II does a superb job deriving surround sound from conventional
2-channel stereo recordings, using phase relationships to extract front,
right, center, and surround channels. A “music mode” makes Pro Logic
II an excellent choice for audio CDs.
Dolby Digital
In 1992, a digital recording system, called Dolby Digital, was first used in
the film industry. Dolby Digital is a recording/playback system that uses
compression techniques to store large amounts of audio data efficiently,
much like the JPEG format stores large photographs in small files on a
computer. Because it is capable of performance beyond that of audio CDs
and can tailor its output for a wide ranges of system configurations, Dolby
Digital is the standard audio format for DVDs and for digital television
broadcasting in the United States.
The Dolby Digital system can be used to record up to six discrete audio
channels, but can also be used for fewer. For example, a Dolby Digital
2.0 soundtrack is a digital 2-channel recording of a matrix encoded
Dolby Surround soundtrack. To play a Dolby Digital 2.0 recording, use
Dolby Pro Logic II decoding as previously described.
The most common use of Dolby Digital in newer films, in both the film
industry and in home theater, is Dolby Digital 5.1. Instead of encoding
multiple surround channels on a two-channel recording, Dolby Digital 5.1
records six discrete channels: front left, front center, front right, surround
left, surround right, and a Low Frequency Effects (LFE) channel containing
ultra-low bass signals intended for a subwoofer. A Dolby Digital decoder
extracts the channels from the digital bitstream, converts them to analog
signals and routes them to the appropriate amplifiers and speakers. All
channels provide full frequency response with total separation between
