Solid State Logic X-Logic Series owner manual Line Return Module, Introduction, Operation, E-1

X-Rack Line Return Module

E.The Line Return Module

E.1	Introduction
	The X-Rack Line Return module is designed to operate in conjunction with the X-Rack XR622 Master
	module to create an expandable, rack mounted, stereo line level mixer. The X-Rack Master module
	provides the monitoring facilities that would be expected; mix amps, monitor outputs and a headphone
E.2	feed – please refer to the X-Rack Master module documentation for a full description.
	Connection		The rear panel of the module carries a pair of 25-way ‘D’ connectors. The left-hand
		LINE IN INSERT
		SEND/	connector provides four balanced Line Inputs whilst the right-hand connector
	1 - 4		provides access to the Insert Send and Insert Returns for each of the four Line Inputs.
		RTN	This module operates at a nominal level of +4dBu although the gain of each Line Input
			or Insert Return can be varied by a front panel control.

E.3 Operation
The X-Rack Line Return module contains four separate input amplifiers, each	XR623
equipped with individual Gain and Pan controls as well as Insert, Solo and
Record/Mix bus switches.	SEL
The ‘LEVEL’ control 1 allows the gain of each input to be varied from –∞ to +10dB	INS
with an indent at unity gain. A signal present indicator measures the signal level	LINE 1	PAN
immediately prior to the ‘LEVEL’ control. It will light GREEN for signals above the	LEVEL
lower threshold of –60dBu, AMBER for signals between +4dBu and +24dBu and	1	REC
lights RED for signals above +24dBu.	2 LINE 2	SOLO
Signals applied to the input of the module will be permanently available on the		PAN
Insert Send; the Insert Return can be selected in place of the Line Input by pressing	INS
the ‘INS’ switch 2 . Note that the Insert Return can also be used to provide an	LEVEL	REC 3
alternative input to each input amplifier.
Each input can be individually routed to either the Mix Bus (‘REC’ switch released)	LINE 3	SOLO
or the Record Bus (‘REC’ switch pressed) 3 . The ‘SOLO’ switch feeds signal, post		PAN
Level and Pan, to the X-Rack Solo Bus. Each of the three busses feed the X-Rack	INS	4
Master Module, located either in the same X-Rack or remotely if multiple X-Rack	LEVEL
units have been linked by the ‘MIX BUS LINK’ connector (please note that X-Rack		REC
units prior to serial number XRK0110 are not equipped with an ‘MIX BUS LINK’		SOLO
connector).	LINE 4	PAN
The ‘PAN’ control 4 will pan between Left and Right of the selected bus.	INS
	LEVEL
		REC
		SOLO

Page E-1