User manual RANE GE 30

[. . . ] 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. This will give you a chance to make mistakes and correct them before any damage is done. This product offers the choice between going in and out of it using either the 3-pin connectors or the handsome black #6 terminal strips with the finely plated screws. The terminal strips are connected in parallel and are used in the same way. [. . . ] 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. 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 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. 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. Again, see the "Sound System Interconnection" section for further clarification. These #6 terminals directly parallel the pins in the XLR Input and Output connectors. Their use or disuse is completely up to the judgement of the installer. Pressing this switch in to its locked position places the output stage into its TRANSFORMER COUPLED balanced mode, and illuminates the yellow LED. Pressing the switch again to release it from its in position causes the GE 30 to be placed back into its ACTIVE balanced output mode, extinguishing the yellow LED and lighting the green LED. Pressing this switch to its in and locked position selects the CUT-ONLY mode, a fact attested to by the CUT-ONLY LED indicator on the front panel. Pressing the switch again to release it to its out position places the unit back into the BOOST/CUT mode, which reconfigures the LEDs on the front panel. The GE 30 is supplied from the factory with a remote power supply suitable for connection to this input jack. The power requirements of the GE 30 calls for an 18-24 volt AC center-tapped transformer only. [. . . ] The Rane Model GE 30 is a professional equalization tool, and as such, it would not be wise for us to recommend that you "Fiddle with it `til it sounds good. " It is because of this that we offer the following: MEASUREMENTS We highly recommend that a real time analyzer be used to display the combined sound system/room response so intelligent adjustments may easily be made without a lot of trial and error. 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. [. . . ]