The Outlaws’ Guide to the Marantz AV7005
Dolby Pro Logic IIz
Unlike earlier processing modes in the Pro Logic family, Pro Logic IIz does not focus on
expanding audio into surround channels. Instead, Pro Logic IIz is a “Height” system that
extends audio into a pair of speakers located above the front channels. Pro Logic IIz
retains the surround processing features of Pro Logic IIx (expanding stereo sources into
multichannel as well as creating 7.1 channels from 5.1 channel sources). In addition to
that, it adds processing to produce the height channels above the left and right front
speakers that expand the traditional horizontal soundfield and create a greater vertical
front soundstage.
Pro Logic IIz processing will only be available if speakers are connected to the “Front
Height” pre-amp outputs and the height speakers are enabled in the
Speaker Setup
menu. When Pro Logic IIz processing is engaged and surround back speakers are
enabled, the AV7005 will not send a signal to the surround back speakers.
DTS Neo:6
Neo:6 could be considered DTS’s version of Dolby Pro Logic II. Like Pro Logic II, it is
designed to be used with stereo sources and it offers more than one mode. The Neo:6
Cinema mode is similar to Pro Logic II Movie, and Neo:6 Music is similar to Pro Logic II
Music. (See page 41 for Neo:6 Music settings.) Unlike Pro Logic II, Neo:6 supports six
discrete channels of audio (left, right, center, surround left, surround right, and a mono
surround back). Due to this sixth audio channel, Neo:6 can also be used with 5.1-
channel sources such as Dolby Digital and DTS to generate a mono surround back
signal.
Audyssey DSX
Audyssey DSX (Dynamic Surround Expansion)
is a matrix processing mode similar to Dolby Pro
Logic IIz. It can be used to create either front
height speakers (like those used with Pro Logic
IIz) or front wide speakers (which are located
between the front and side surround speakers).
It requires a source that includes both front
channels and a center channel. DSX can be
combined with any other processing mode
except for Stereo, Pro Logic IIz, Multi-Channel
Stereo, Neural, Dolby Virtual Speaker, Direct,
and Pure Direct. As with Pro Logic IIz, the AV7005 can not engage more than seven
speakers at a time. See page 13 for limitations on the number of speaker outputs that
can be output at once.
Circle Surround II
This processing mode from SRS Labs can be used to expand two-channel sources to
multichannel, similar to Dolby Pro Logic II and DTS Neo:6. CS II can be used with
analog stereo, PCM stereo, and Dolby Digital 2.0 sources. As with Pro Logic II and
Neo:6, CS II offers Cinema and Music modes. It also offers a Mono mode for use with
mono mixes.
Audio Formats and Listening Modes
Marantz AV7005
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