Lavry DA924 Operation Manual - page 6
DA924
Operations Manual
6
Analog Outputs
The LEFT OUTPUT and RIGHT OUTPUT XLR signals are factory set to provide
Balanced analog signals (signal between pin 2 and pin 3 of the XLR connectors).
Operation in unbalanced mode (signal at pin 2 and ground at pin 3) is possible by changing
the internal jumpers J8 and J10 located behind the XLR analog output connectors inside the
case.
The factory default setting is for Balanced outputs-- the jumpers are positioned parallel to
the front panel.
For Unbalanced mode position the jumpers are set to 90 degrees with respect to the front
panel.
Pin 1 of the XLR connectors is connected to ground potential for proper cable shield
connection.
The LEFT OUTPUT and RIGHT OUTPUT IEC signals are always unbalanced and
are not effected by J8 and J10 jumper settings.
Analog Output Level Adjustment
Level control trim pots are located between the LEFT OUTPUT and RIGHT OUTPUT
XLR connectors. When hooked for balanced output, the full scale analog level can be
adjusted between 12dBu to 22dBu.
When hooked for Unbalanced output, the full scale analog level can be adjusted between
6dBu to 16dBu.
The IEC connector level is adjustable between 8dBu and -8dBu full scale signal.
The wide 0-10dB attenuation range relies on an internal pot. When operating at minimum
attenuation (22dBu balanced or 16dBu unbalanced), the signal is tapped directly from the
top of the pot thus the pot is effectively out of the signal path. Increasing the attenuation
introduces more and more pot resistance into the signal path.
While taking all precautions to minimize sonic degradation associated with use of pots in
the signal path, we offer alternative factory settings, trading off the adjustment range from
21dB to 2.8dB (+/-1.46dB). These settings minimize the impact of the pot on sonic
quality, and may be of interest for users willing to have the unit set for operation with a
very low range of level adjustment. Contact the factory for more information.
Turn-On sequence
When applying AC power to the unit, the following sequence of events take place: