miniDSP Ltd – Hong Kong / Email :
info@minidsp.com
/ Features and Specifications are subject to change without prior notice
P 6
2.2.1
DC Power connectivity
OpenDRC-AN requires a single 5VDC supply to operate. A universal SMPS power supply is already provided along with the unit.
Here is a picture of the power supply provided along with the plugs.
2.2.2
Analog Audio connectivity
The OpenDRC-AN can accept analog balanced or unbalanced signals for input and output. If you do not wish to build custom
cables, many cables/transformer adapters are readily available
Signal
Connector
Analog Balanced Audio
Balanced connectivity on Neutrik 3pin XLR connector:
PIN1: S = > Cable Shield
PIN2: + = > Positive cable
PIN3: - = > Return cable
Analog unbalanced Audio
Unbalanced audio connectivity Neutrik 3pin XLR connector can be achieved by
linking Pin1 & Pin 3 together (Minus)
PIN1: - = > Minus
PIN2: + = > Positive cable
PIN3: - = > Minus cable
Another alternative is to use a transformer. Jensen Transformers is a known
reference out there while many other solutions are also available if you google for
such adaptor.
2.2.3
Analog Audio internal Jumper configuration
The OpenDRC-AN has internal jumpers to modify the maximum input level of the unit from 8Vrms to 2Vrms balanced input.
Note that these jumpers are essentially an input pad. They are NOT changing the output level (fixed @ 2Vrms).
o
By default, jumpers are configured for 2Vrms (i.e. unity gain structure for 2Vrms in @ 0dBFS = 2Vrms out @ 0dBFS). The jumpers
are closed.
o
If you remove the jumpers (open). The maximum input level becomes 8Vrms.
Channel 1 input
jumpers
Channel 1 input
jumpers
