Connecting the Amplifier to Your System

INPUT AND OUTPUT CONNECTIONS

The amplifier is equipped with balanced and single-ended inputs.

Krell recommends using balanced interconnect cables. Balanced interconnect cables

not only can 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 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 amplifier to your system.

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 or single-ended inputs located on the back panel: (4) and (6) on the KAV–2250 or (5) and (7) on the KAV–3250. The balanced inputs use three-pin XLR connectors; the single-ended inputs use RCA connectors.

IMPORTANT

Use only one input to each amplifier channel at a time.

Krell KAV–2250 and KAV–3250