JBL SYNTHESIS SDP-40 - Manual (Page 133)

MODE ADJUST
SDP-40
5-35
BASS ENHANCE ON, OFF
Selecting the ON setting enhances stereo bass, which results in
low-frequency reproduction that is less localizable and more
realistic in the listening space. The effectiveness of the BASS
ENHANCE parameter varies depending on room acoustics and the
ability of the surround speakers to reproduce low frequencies. It is
recommended to use front, side, or rear speakers that are capable
of reproducing frequencies of 40Hz or lower.
Note:
When the BASS ENHANCE parameter is set to ON,
most listening spaces have a 2 to 3dB reduction in
low-frequency energy. Set the AUDIO CONTROLS
menu BASS parameter to compensate for this
reduction.
BASS RT 5ms to 48.6s
Works with the MID RT and SIZE parameters to adjust the amount
of time required for low-frequency information to decay below
60dB in level. The BASS RT parameter setting should match the
MID RT parameter setting for more natural effects in smaller
listening spaces. The full parameter range might not be available
depending on the MID RT and SIZE parameter settings.
CENTER OFF, -30 to +12dB
Controls the output level of the Main Zone audio output connector
labeled Center.
CENTER DEPTH 0 to 18
Adjusts the amount of processing applied to the center channel,
changing the perceived distance of the center speaker. Higher
settings increase and lower settings decrease the perceived distance
of the center speaker from the primary listening position.
CENTER MIX -25 to +5dB
Indicates the relative center channel level for downmixing. It is
recommended to set this parameter to +0dB for film sources and
-5dB for music sources.
CNTR DLY SAMPLES -127 to +127
Controls the relative time offset of the center channel. It is
recommended to set this parameter to +0 unless the center
channel is not properly timed and the value of the error is known.
COMPRESSION AUTO, ON, OFF
Reduces wide volume level changes and increases dialog intelligibility
at lower listening levels for Dolby Digital sources. When ON is
selected, full compression is applied regardless of volume level.
When OFF is selected, compression is not applied. It is
recommended to set this parameter to AUTO or ON for Dolby
Digital sources that are listened to at lower volume levels, especially
for nighttime viewing to avoid disturbing others.
. . . Listening Mode Menu Parameter Descriptions continues on page 5-36
Setting the BASS RT, MID RT, or SIZE parameters to a high
value may produce undesirable or damaging audio.
CAUTION
CALIBRATION
Opens the PANORAMA CALIBRATION menu, which can be used to
calibrate the PANORAMA listening mode. Refer to page 5-12 for
more information.