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Apollo x8 Hardware Manual Rear Panel 30
Line Input Reference Levels
Line Inputs 5 – 8 can be individually configured to use –10 dBV or +4 dBu reference
levels. This option is set in the channel input strips within the Console application. See
the Apollo Software Manual for details.
Variable Gain
Line inputs 1 – 4 can be routed into the channel’s preamplifier for variable gain
adjustments, or the preamp circuitry can be completely bypassed for the purest path
directly into the A/D converter. The BYPASS option is set with the LINE INPUT GAIN
menu in the Hardware panel within the Console Settings window. By default, line inputs
1 – 4 are routed into the preamp.
When the preamps are bypassed, line inputs 1 – 4 operate at a fixed reference level
of +4 dBu. When routed into the preamps, gain for line inputs 1 – 4 is continuously
variable with up to 65 dB of available gain.
Note: For related information, see Line Input Gain Bypass.
(37) Microphone Inputs 1 – 4
Important: To use an XLR mic input, the channel’s INPUT indicator (#12) must
be set to MIC with the INPUT switch (#6) or the channel’s MIC/LINE switch
within the Console application.
The balanced Microphone inputs use locking XLR jacks. Pin 2 is wired positive (hot).
Inputs 1 – 4 are switched between MIC and LINE using the front panel controls.
Note: The Hi-Z inputs override the mic inputs on channels 1 & 2.
The XLR mic inputs are always routed into the channel’s microphone preamplifier. The
gain is controlled by the PREAMP knob (#4) when the channel is selected, or from
within the Console application. The mic preamps provide up to 65 dB of gain.
+48V phantom power is individually available for each mic input via the front panel
switch (#8, when the channel is selected), or from within the Console application.
Caution: To avoid potential equipment damage, disable +48V phantom power on
the channel before connecting or disconnecting its XLR input.
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