Nady Audio MXE-1212 Owner's Manual

Contents

Nady Audio MXE-1212 Owner's Manual Manual pdf 6 page image

C O N T R O L S A N D C O N N E C T I O N S6(1) MIC INPUTThe Mic input is an elec-tronically balanced XLRtype designed to acceptsignals from any bal-anced low impedance(Low Z) microphone. Toaccommodate condensermicrophones, this input isalso equipped with+48VDC phantom powerglobally switchable to allXLR input jacks with thePhantom Power switch(38) on the back panel.Dynamic or ribbon-typemicrophones do notrequire phantom power-ing. It will be necessary to adjust the channel gain with theinput Trim control (4) and/or Pad switch (5) to achieve anominal operating level. The XLR jack is configured for: Pin1= ground, Pin2 = positive (+), Pin3 = negative (-).[Note: The Mic inputs are more sensitive than the Line inputs.Also, do not connect mics with the phantom power switchedon, as indicated by the Phantom Power On LED (21) in theMaster Section of the front panel. Never use unbalanced miccables with the Phantom Power switched on. Never short the+48VDC to ground, as that can cause serious damage toyour mixer. Also, turn down the Stereo Master faders (25A,25B) to prevent possible sharp transient noise from damagingthe speakers when turning the phantom power on or off.](2) LINE INPUTThe Line input is designed to accept balanced or unbalancedline-level signals such as those from keyboards, drummachines, or samplers. There is enough gain available on theline input to accept even lower level signals, such as thosefrom an unbalanced microphone or guitar output. Use theTrim control (4) and/or Pad switch (5) to adjust for thedesired level. If a balanced signal is to be connected to theline input, then a 1/4” TRS (stereo) phone plug should bewired for: Tip = positive (+), Ring = negative (-), Sleeve =ground.(Note: Only the Mic or the Line input of a given channel canbe connected at one time. Never connect both simultaneouslyto the same channel.)(3) INSERTSChannels 1-4 are equipped with rear panel insert jacks toconnect external signal processors such as compressors,noise reduction systems, or effects devices to the individualinput channels. Insert points are useful for adding dynamicprocessing orequalization to achannel or the mix.Unlike reverbs,etc., which are usu-ally added to thedry signal, dynamicprocessing is nor-mally appliedacross an entiresignal. Here an Aux Send would be inappropriate. Instead,the signal is intercepted somewhere along the channel, fedthrough the dynamics processor and/or EQ, then returned tothe console at the same point where it left. The insert point isnormalized, i.e., the signal is only interrupted when a plug isplugged into it. The insert jack is located pre EQ in the chan-nel and is configured as: Tip = send, Ring = return, Sleeve =ground.The Insert can also be used as a channel direct output bysending the signal from the ring. To use the Insert as a directoutput, insert a 1/4” phone plug halfway into the Insert jackso the tip of the plug connects with the ring of the insert jack.The jack will click into place when the connection to the ringis made.(4) TRIM CONTROLThe trim control adjusts theinput sensitivity (channelgain) of the Mic and Lineinputs on the input chan-nels. This control can beadjusted to accommodateinput signals from a widevariety of sources, from thehigh outputs from key-boards or drum machinesto the small signal outputsof microphones. The trimcontrol adjusts the inputsensitivity from -20dB to -60dB with the -20dB Padswitch (5) in the OUTposition, and -40dB to 0dBwith the pad in the IN (but-ton depressed) position.The best balance of S/Nand dynamic range will beachieved if you adjust theTRIM control on eachchannel separately so thatthe Peak Indicator LED(4A) for that channel lightsoccasionally.(4A) The Peak LED illumi-(1)(2)(4A)(5)(6)(4)1. MONO INPUT SECTIONBACK PANEL(3)