User manual RANE GE 30

[. . . ] So set the sliders where you want them and you're outta here. Never connect anything except an RS 1 or other approved Rane AC power supply to the thing that looks like a telephone jack on the rear of the GE 30. This is an AC input and requires some special attention if you do not have an operational power supply EXACTLY like the one that was originally packed with your unit. See the full explanation of the power supply requirements elsewhere in this manual. GE 30 CONNECTION When connecting the GE 30 to other components in your system for the first time, leave the power supply for last. [. . . ] Pressing this button to its in and locked position provides a complete "hard-wire" bypass of all active circuitry in the GE 30, including grounds. The GE 30 automatically switches to the Bypass mode in the event of a power failure. This insures that should something fail in the power supply of the unit, signal passes to the rest of the system. The indicator illuminates red when the GE 30 is placed in the Bypass mode via the switch. These 60 mm slide controls set the relative level of boost or cut at each 1/3-octave frequency location. The effect of each control is indicated by one of two calibration scales, the selection of which is denoted by an illuminated yellow LED located at the top of the CUT-ONLY scale and at the center of the BOOST/CUT scale. 7 LOW CUT filter control rotates in a clockwise direction to increase the frequency of the low filter cutoff. The calibrations on the front panel indicate the -3 dB point of the filter. Rotating this control to its full counterclockwise position effectively bypasses the filter. 8 HIGH CUT filter control rotates clockwise to increases the frequency of the high cut filter cutoff. Like the low-cut filter, the calibrations reflect the -3 dB point of the filter. Full clockwise rotation effectively bypasses the filter. 9 CUT-ONLY indicator illuminates yellow when the EQ MODE select switch on the rear panel is depressed, placing the GE 30 in its CUT-ONLY mode. 0 BOOST/CUT indicator illuminates yellow, advising the operator that the rear mounted EQ MODE function select switch is in its OUT position, placing the GE 30 in the + 12 BOOST/ -15 CUT mode. Manual- REAR PANEL DESCRIPTION 1 XLR INPUT connector. This is a fully differentially balanced Input, connected such that pin 2 is hot "+", pin 3 is return "­" and pin 1 is chassis ground. For unbalanced operation, drive pin 2 as hot, and pin 3 as return. For grounding and shielding information, consult the RaneNote 110, "Sound System Interconnection" section for expanded details. Again, a fully differentially balanced socket, pin 2 is hot "+", pin 3 is return "­" and pin 1 is chassis ground. Balanced output configuration should use only pins 2 and 3. If unbalanced operation is your cup of mud, use pin 2 as hot and pin 1 as return or ground unless your are running unbalanced output in the TRANSFORMER coupled mode, then you must short pins 1 & 3 together. This is not recommended, however, for the active unbalanced mode. Again, see the "Sound System Interconnection" section for further clarification. [. . . ] Of course, Rane Corporation builds a very nice one (the RA 30), at a very reasonable price if you are not already in possession of one. Deciding whether the GE 30 should be operated in the Boost/Cut mode or the Cut-Only mode is a bit of a sticky problem. For that matter, referring to the Boost/Cut mode versus the Cut-Only mode is bound to cause some debate among more than a few readers. There are those that believe it makes no difference which mode you use, and there are just as many others who believe that one or the other is the one and true way to go. [. . . ]