Owner`s manual

Front panel features

Stereo Input channels features are identical for both the XR-20 and the XR-24. The XR-

20 has 4 Stereo inputs, and the XR-24 has and 8 Stereo inputs. On both models the

Stereo inputs are

located to the left of the master section, to the right of the Mono

inputs. They can be treated as mono input channels, or as Stereo input channels.

Stereo Line Input (mic pad)

The stereo input preamp circuit is set up to accept mic-level signals. The sig-

nals are brought in via the XLR mic-input connectors located on the rear panel.

The 1/4" TRS input jacks are disabled.

The stereo input preamp circuits are set up to accept line-level signals from

either the XLR mic-input connectors or the 1/4" TRS input jacks, all located on

the rear panel. Since the sensitivity of the stereo input preamp is reduced, this

control can also act as a PAD for bringing very hot microphone feeds down to a

safe level, avoiding overload. When a plug is inserted into a 1/4" TRS input jack, the

XLR connector is disabled.

Gain

The Input gain control is used to establish proper gain structure in the chan-

nel. The GAINcontrol affects both the Left and Right input signals. For best

results, use the Solo system to monitor the channel while you set the gain. The

goal is maximum gain without distortion. Both the main LED meters (during Solo)

and the channel’s Level/Peak indicator can be used for adjusting gain.

SUM INPUTS

By summing the inputs, a stereo input channel can be used as a mono input chan-

nel.

The channel functions as a stereo input.

If signals are applied to both the Left and Right input jacks, they will be

summed together as a mono signal. If a signal is applied to just one of the input

jacks, it will be treated as a mono signal throughout the rest of the channel.

Stereo Input channel

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