User manual RANE ME 60

[. . . ] This gives you a chance to make mistakes and correct them without damaging your fragile speakers, ears and nerves. INPUTS All three Inputs are wired in parallel and are actively balanced, except the unbalanced RCA phono. Choose strictly from a required hardware pointof-view, there will be no performance trade-offs. The wiring convention adheres to American, British and International standards of pin 2 or tip being hot, pin 3 or ring being return, and pin 1 or sleeve being shield. [. . . ] RCA Phono INPUT connector provides for convenient hook-up to unbalanced products. This ¼" TRS connector parallels the XLR connector described below. RCA Phono OUTPUT connector provides convenient hook-up to unbalanced products. IMPORTANT NOTE 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 their line cords. Make sure 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. Manual-3 OPERATING INSTRUCTIONS Insuring the proper level of gain though the ME 60 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 signal to noise performance of the ME 60. Run the ME 60 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. It is also useful in adjusting the level of the ME 60 for unity gain or best signal-to-noise performance. The gain of the ME 60 is optimized and at unity when there is no sound level difference between the bypassed and the active positions. The overall gain range of the level control for the ME 60 is off to +2 dB for unbalanced operation, or off to +8 dB for balanced operation. The level difference between the equalizer in bypass or active can be significant. Adjust the LEVEL control so the signal level is the same between the bypassed and active positions of the BYPASS switch. GETTING STARTED Here is one method of setting your equalizer that works well. Position the CHANNEL LEVEL controls about "6" for unbalanced operation and "7" for balanced operation. Set LOW and HI CUT filters fully down, corresponding to 10 Hz and 40 kHz. Verify the OL LED is not on--occasionally blinking during extreme peaks indicates an optimal setting. [. . . ] Boosting frequencies below the vented enclosure's low frequency cutoff can easily cause over excursion of the speaker's cone, causing premature failure. In addition, boosting low frequencies can make your power amplifier run hotter, leading to premature amplifier failure. When equalizer adjustment is completed, compare the unequalized sound with the equalized sound by alternately engaging the BYPASS switch. Use familiar source material and walk around in the sound coverage area to insure that no anomalies have been introduced into the sound system. [. . . ]