Setting The Output Gain; Setting The Lfe Mixing Control; Setting The Surround Phase Control; Setting The Down Mix Type Control - evertz 7700 MultiFrame Manual

7700/7800 MultiFrame Manual
7800IDA8-3G 3G/HD/SD-SDI Intelligent Distribution Amplifier (1x8)

6.7.2.2. Setting the Output Gain

The Output Gain control enables the user to configure the output gain. To adjust the output gain control,
drag the slider right to increase the gain value or drag the slider left to decrease the gain control. The
output gain ranges from -20 dB to +20 dB in 0.1 dB increments.

6.7.2.3. Setting the LFE Mixing Control

The LFE Mixing control enables the user to control whether the LFE channel is included or not in the
audio down-mixing. Note that the LFE Gain control is in effect only when LFE Gain is selected. The LFE
Mixing Control drop down menu provides the following options:
No Mixing
LFE Gain

6.7.2.4. Setting the Surround Phase Control

The Surround Phase control manages whether or not a 90 degree phase shift is applied to the surround
channels before being passed to down-mix matrix. Select 0 degree if no 90-degree phase shift is needed.
It is required that surround channels are 90-degree phase shifted for Dolby Prologic I decoding, but if
surround channels in the 5.1 audio input are already 90-degree phase shifted, then the user should select
0 degree to avoid double 90-degree phase shifting. Normally, the 90 degrees phase shift is applied. The
Surround Phase radio button menu appears as follows:
0 degrees
90 degrees

6.7.2.5. Setting the Down Mix Type Control

The Down Mix Type control enables the user to set the type of audio down-mixing that will be performed.
The user may select from LoRo (Left Only and Right Only), LtRt (Left Total and Right Total) Prologic I and
LtRt (Left Total and Right Total) Prologic II OR may choose to perform a Custom down-mix.
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The LFE channel will not be included in the down-mix.
The LFE channel will be included in the down-mix with gain for the LFE
channel defined by the LFE Gain control.
No phase shift is applied to the surround channels before being
passed to down.
A 90 degree phase shift is applied to the surround channels before
being passed to down.
Revision 1.2