Perreaux Prisma 350 - Manual (Page 15)

15
Balanced Inputs
Accepts a signal from a preamplifier with balanced outputs via a high quality
XLR connector. The use of good quality balanced line cable into the balanced
input cause the input signal to be relatively immune to noise and external effects
caused by the use of long interconnect cables, helps reduce hum loop noise and
aids in the cancellation of distortion products.
Refer to Chapter 13 “Specifications”, for detail on input sensitivity and
impedance.
Note: Please set the input configuration switch to the appropriate setting.
The pin assignments of the balanced XLR connectors are as follows:
Pin 1: Signal ground
Pin 2: Signal + (non-inverting)
Pin 3: Signal – (inverting)
Shield ground: Chassis ground
Note: Please refer to the operating manuals of your balanced output line level
source to verify that the pin assignments of the output connectors
correspond to the 350 balanced inputs. In the event that they are not
compatible, the interconnecting cable will need to be altered to suit.
For more information regarding balanced interconnects, please refer to Chapter 7
“M aximising System Potential”.
Unbalanced Inputs
Accepts a standard single-ended input pair (RCA) from preamplifiers with
single-ended outputs. The connectors are high quality gold plated sockets which
are highly conductive, corrosion resistant, and provide less potential for
corrosion induced distortion. Inputs are clearly marked Left and Right, indicated
by a black and red ring respectively. Care should be taken to maintain channel
integrity.
Refer to Chapter 13 “Specifications”, for detail on input sensitivity and
impedance.
Note: Please set the input configuration switch to the appropriate setting.
Input Configuration Switch
This toggle switch allows selection of either the balanced or unbalanced inputs.
Note: Input leads should be connected to one type of input only, i.e. do not
connect to both the unbalanced and balanced inputs at one time.