SteveGeetar wrote:The JBL Eon One Settings were as follows:
Bass and Treble at 12 o'clock (midpoint). Reverb at 10 o'clock. Ch Vol set at 9 o'clock.
Mic input switch in. Master Volume about 1/4....
..OR, is the fix to push the CH 1 JBL Eon One Mic/Line switch to Line and crank the levels on the CH 1 and Master Volume?
You said it yourself. I'd set the master volume on full and the EONs input channel set to line input and the channel volume at around 3/4.
You should now be able to control the output from the main fader. Your next task is to make sure the input gains on your mixer are set correctly so that the inputs aren't distorting. Turn down the master output knob. On each input channel at a time, set the output fader knob to 0dB gain, press the pre fader solo button and adjust the input trim control on the channel until the meter LEDs are peaking in the -2 to +2dB area. Once you've done this to all your inputs (remember to only PF solo one channel at a time and remember to undo the PF solo on the last channel you used) , then you should be able to bring your master output fader up and hear a lot of nice noise from your EON speaker.
Now's the time to balance the channels, but try and keep the loudest channel at 0dB gain if you can, and lower the others below this. Hopefully you shouldn't need to have the main meters going much above the 0dB level, as you've got now the EON's volume set high. There will be some headroom on the EON's inputs, but you probably can't drive it too hard above the nominal input level (which will be when the mixer's output meters hit 0dB) before the input begins to clip.
Also, keep an eye on the limit light on the EON. If this starts flashing, then the power amps are working at almost their maximum output and the signal to them is being limited to protect them and the speakers. At this point, you'll need to back off the input signal, either by reducing the input channel volume, or by lowering the signal level from the mixer.
There are other variations on setting up your mixer levels, but this one works OK for me.
+4 indicates +4dBu. the 'professional' line level (the 'consumer line level is a bit lower level signal and is -10dBv, note the different units).