Krell S-1500 - Manual (Page 13)

Connecting the S –1500 Amplifier to Your System
The S –1500 Multi-channel Amplifier is equipped with balanced
and single-ended inputs.
Krell recommends using balanced interconnect cables. Balanced
interconnect cables not only minimize sonic loss, but are also
immune to induced noise, especially with installations using long
cables. Balanced connections have 6 dB more gain than single-
ended connections. When level matching is critical, please keep
this gain value in mind.
The S –1500 amplifier is shipped with shorting pins in the XLR
inputs. These pins should remain in the XLR inputs if the amplifier
is operating in the single-ended mode. When the shorting pin is
inserted, pins 1 (lower left) and 3 (top) are shorted together.
Remove the shorting pins to connect the amplifier for balanced
operation.
The XLR pin configuration is described below:
Pin 1 Shield (ground)
Pin 2 Non-inverting (hot) (0°)
Pin 3 Inverting (cold) (180°)
Follow these steps to connect the S –1500 amplifier to your sys-
tem.
1. Make sure all power sources and components are off before
connecting inputs and outputs.
2. Neatly organize the wiring between the amplifier and all system
components. Separate AC wires from audio cables to prevent
hum or other unwanted noise from being introduced into the
system.
3. Connect the interconnect cables from your output device to
the amplifier inputs using the balanced (3) or single-ended (4)
inputs located on the back panel. The balanced inputs use
three-pin XLR connectors; the single-ended inputs use RCA
connectors. The S –1500 / 5 uses only inputs 1 through 5 and
the S –1500 / 6 uses inputs 1 through 6.
Use only one input to each amplifier channel at a time. You may use
the balanced inputs for some of the amplifier channels and the sin-
gle-ended inputs for the remaining channels.
INPUT AND OUTPUT
CONNECTIONS
IMPORTANT
Krell S–1500 Multi-channel Amplifier 13