APB-DynaSonics ProDesk-4, Owner'S Manual

Page: 21 / 40

ProDesk-4 OWNER’S MANUAL
21
STEREO LINE INPUT - MUTE, SOLO and LEVEL CONTROL
Mute Switch (Local) - Internally Illuminated
Activation of this latching switch will mute the primary outputs as well as all pre and post-fader
auxiliary sends of the channel. When depressed, it will illuminate RED, indicating the status of this local
mute only; an additional LED (located along the fader track) indicates the status of any remote
activated mutes. Activation of either mute system (local or remote) will not affect the channel's
metering or the PFL signals; these are both located Pre-Fader/Pre-Mute.
Channel Level Meter
Two, 3-segment LED meters indicate the pre-fader channel level. The top Red segment of each of
these meters will illuminate if any of the multiple sample points in the stereo signal chain approaches
3dB of clipping. A yellow LED on each channel illuminates in the caution zone at a +8 reference level.
The green signal present LED first illuminates at approximately –30dB and increases in brightness with
level until it is at full intensity on each channel. Best operation is achieved when the green LEDs are
illuminated with average input signals with only occasional short yellow/red bursts of the +8 and peak
LEDs.
Please Note: The overall channel meters should be considered as 2 separate monitoring indicators:
the Green and Yellow LEDs are Average responding and show the Pre-fader levels ONLY; the faster
Red LEDs monitor the pre-fader signal AND the Preamp and Post-fader signals. It is possible to have
the Red LED illuminate without first having the Yellow LED lit. This usually will be caused by excessive
preamp levels (and a subsequent cut in the EQ), or there may be a compressor or limiter in the
channel’s insert part that is attenuating the Pre-fader signal (Green & Yellow LEDs), but the preamp
signal feeding the compressor is approaching clipping. The usual cure is to turn down the channel’s
Gain control.
Mute Group Preset Switches 1 thru 4
When any of these switches are selected, the input channel will mute when the associated Mute
Group switch within the Master section is depressed. Activation of a Remote mute affects the channel
the same way as a Local Mute.
Remote Mute (R Mute) Activated LED
This LED will illuminate (Red) when the channel is muted by any of the 4 Mute Groups.
100mm Channel Fader
This stereo fader adjusts the post-fader level of the channel. All bus assignments and all post-fader Aux
sends are controlled by this fader.
PFL (Solo) Switch - Internally Illuminated
This latching switch will illuminate yellow when activated. It will route the Pre-fader channel signal to
the Master section for display on the Master solo meters and into the monitor/headphone systems. The
feed to the Solo system is stereo, but if Split-Track is active, then the feed to the PFL circuitry will be the
mono sum of the L&R channel signals controlled by the Pre-fader Blend pot.
NOTE:
When the Split Track button is depressed, the L&R channel signals will be combined to a mono signal by
the Pre-Fader Blend control at the Pre-fader signal point. If the Blend control is set for full-Left or full-
Right, the opposite R or L signal will NOT be present in the resulting mix and will not be heard in any of
the assigned buses or PFL monitoring.