User manual RANE GE 130

[. . . ] Fully utilizing the capabilities of the GE 130 requires moving some of the sliders, but you already knew that. To make best use of the GE 130, use some sort of an analyzer to adjust the sliders properly. 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 unit. This is an AC supply 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. GE 130 CONNECTION When first connecting the GE 130 to other components, leave the power supply for last. [. . . ] It is permissible for both Euroblock and XLR OUTPUTS to connect to different devices simultaneously. Remote power supply input: Use only an RS 1 or other remote AC power supply approved by Rane. The GE 130 is supplied from the factory with a remote power supply suitable for connection to this input jack. The power requirements of the GE 130 call for an 18-24 volt AC center-tapped transformer only. Chassis Ground Point: A #6-32 screw and toothed washer is provided for chassis ground. Since the GE 130 does not get chassis ground through the AC cord, this point is provided in case your system does not have another earth ground such as the rack rails. See the Chassis Grounding note below for details. Optional power supply mounting location: These screws can be used to mount the remote supply that came with the GE 130. Noise performance is only slightly degraded when the power supply is attached. The application will determine whether this option is of benefit. Noise performance will still meet those in published specifications if this option is used. CHASSIS GROUNDING If after hooking up your system it exhibits excessive hum or buzzing, there is an incompatibility in the grounding configuration between units somewhere. Your mission, should you accept it, is to discover how your particular system wants to be grounded. Try combinations of lifting grounds on units that are supplied with ground lift switches or links. If your equipment is in a rack, verify that all chassis are tied to a good earth ground, either through the line cord grounding pin or the rack screws to another grounded chassis. Units with outboard power supplies do not ground the chassis through the line cord. Make sure that these units are grounded either to another chassis which is earth grounded, or directly to the grounding screw on an AC outlet cover by means of a wire connected to a screw on the chassis with a star washer to guarantee proper contact. Please refer to Rane Note 110 "Sound System Interconnection" (supplied with this manual and available on request at no charge) for further information on system grounding. Manual-3 OPERATING INSTRUCTIONS Insuring the proper level of gain though the GE 130 is just as important as adjusting the equalizer bands. Improper gain distribution is a common cause of loss of system headroom and less than optimum noise performance. The OVERLOAD LED informs of an imminent or passed overload to the equalizer. Occasional blinking of the OL with program source material is fine, indicating optimized signalto-noise performance of the GE 130. Run the GE 130 with an input signal that is as hot as possible without the OL lighting more than occasionally. The BYPASS switch allows comparison of equalized versus un-equalized signal. [. . . ] Equalization can be like spice in the hands of a master chef. A little goes a long way in improving sound quality, too much and the mix is spoiled. If modest amounts of equalization (6-8 dB) do not solve the problem, it is best remedied by other means. Avoid adding large amounts of boost below 63 Hz, especially when using vented bass cabinets. [. . . ]