BSS Audio OPAL Series DPR-422 Owner's Manual - Manual (Page 11)

11
5.3 Side Chain
Inputs
The side chain insert inputs are electronically balanced via stereo 5mm jack
sockets at an impedance greater than 100k Ohms. The ‘HOT, +, or in phase’
connection is to the jack plug tip, the ‘COLD, - or out of phase’ connection to
the ring. The shield is internally connected to the chassis earth via a low value
capacitor. This ensures freedom from ground loops whilst allowing good EMC
performance. The screen of the cable must be connected to the jack plug
shield to ensure continued compliance with EMC regulations. The cable shield
ground should be connected to the equipment which is providing the input
signal.
When feeding the DPR-422 from unbalanced sources, connect the signal
conductor to the jack plug tip and the cable screen to the plug ring and shield.
Fig 5.5
Fig 5.6
Fig 5.4
When using the DPR-422 to drive unbalanced inputs, best performance is
usually obtained by connecting the DPR-422s ‘+’ signal to the equipment
signal pin and the ‘-’ signal to the equipment shield.
The DPR-422 shield should normally be connected to the equipment shield,
preferably at the equipment end. Transformer isolated outputs are also
available as a dealer fitted option.