I want to plug a microphone in channel one, send it to a EQ and delay for processing and return it back to channel one. I appreciate any assistance

usb b is for streaming digital media,not memory sticks,

• High-power dual DSP engine with improved digital effects and output processing including Feedback Ferret®, 28-band GEQ/5-band PEQ, delay and limiter
• USB 2.0 "A" connection to record directly to or playback from memory stick
• USB 2.0 "B" connection for streaming digital out
• 3-band EQ with sweepable mid-frequency and variable low cut filters
• 2 stereo channels with dual mic/line inputs
• 48 volt phantom power
• 6 Aux sends
• 4 subgroups
• 100mm faders
• Double the processing power of the original FX Series
• All new switching power supply design is more efficient than the original
• Silencer™ mic preamp XLR inputs
• Weight Packed: 45.00 lb(20.412 kg)
• Width Packed: 25"(63.5 cm)
• Height Packed: 36"(91.44 cm)
• Depth Packed: 11.5"(29.21 cm

• Owner's Manual
• FX™2 Mixer Series
• Cut Sheet

1. Turn the main and monitor volumes all the way down (off). Plug a cd player into channel 9/10 and play a track of music of your liking. With the main/monitor volumes still off, adjust the gain on 9/10 until the clip light turns on, then back it down until the clip light just turns off. Put the channel volume at 12 o' clock.
2. With the music still playing, turn up the mains to the desired listening level first, and then adjust the graphic eq until the music sounds good in the room. Remember or mark the position of the volume control. Do not use the channel eq on 9/10 for music that has been mastered properly, leave the eq flat. Once this step is completed then you have now set the main eq.
3. Repeat the same for monitors. Turn off the main volume and then bring up the monitor main volume to the desired level first, then set eq. Now your monitor eq is set properly. Remember or mark the position of the monitor volume.
4. Set up microphone - plug a mic into channel 1 with volume all the way down. Speak or sing into the microphone and adjust the GAIN until you see the clip light, then back down a litttle on the gain. Put the monitor and main volumes back up to the mark from step 2. Now adjust the volume and monitor send on the mic channel to the desired loudness first before adjusting the mic channel eq. Use subtractive eq method to minimize distortion and feedback. ...i.e. if the mic is bassy then turn down the lows, do not ADD highs. If the mic needs bass, turn down the highs.

Turn gain CCW. plug microphone in, mute the channel. turn gain CW until peak LED flashes (while singing loud!) and turn gain back a little bit.
Take the channel fader down, unmute the channel. Put masters at 0dB (near maximum) and adjust the loudness with the channel fader to what you like.
EQ: it always depends on your location. Keep it flat. You might like to reduce at about 200-300 Hz. Cut the low end (Hi Pass Filter = on) or if no HiPass reduce "bass" for about 6...10dB.
ok?

It seems you are getting confused by In and Insert. An insert is a plug where you can create a break in the audio chain and 'insert' something, normally an effect. This is why when you plug something into the insert socket you break the chain and lose the output. It is expecting the signal sent on the top to be returned on the ring when you plug it in and when nothing is plugged in the tip and ring on the socket are shorted. I am not quite sure what you are trying to do despite your detailed description but all you describe seems to be about right if you have got mixed up about inserts.

Hopefully if you are trying to insert something in the audio chain as I think you are and once you properly understand an unbalanced insert such as your unit has you'll be able to figure it out.

Do please stop plugging stuff in and half in that is not designed to be plugged in, or if you're unsure still don't plug it in, from what I can see you're really tempting fate and quite likely to break your unit with what you're doing at the moment.

Send audio from board via the "Aux1 Out" to the input of the effects unit. Now connect the output of the effects unit to "ST1" and control the amount of effects to each channel via each channels "Aux1" control. Adjust the Aux1 controls in the output stage (controls on the right side) for proper levels.

Older boards called this connection "effects send" for the output to the effect, and "effects return" for the effects out back to the board. The better choice was to use "effects send" into the effect but connect the effects output to an unused channel on the board. Using this scenario allowed EQ adjustments to be made before mixing it out to the amps and speakers.

Auxiliary output sockets (AUX 1-6) would usually be used for connecting to an FX unit input, with the signal levels sent to the FX unit governed by the AUX SEND pots from each input channel, setting the AUX MASTER at a level that will prevent peak signals from the various channels (sent to the FX unit) from clipping the AUX bus rails.
The output of your FX unit can be then be returned to stereo line input sockets (ST1-4).
For details see the GL2400 User Guide:
AUX OUT 1-6 (p.15),
AUX SENDS (p.17/18),
AUX MASTERS (p.19),
STEREO CHANNEL LINE IN (p.14).
If you require more precise EQ parameter control of FX return signals - and you have sufficient spare channels on the desk, connect to 2 x mono channel inputs:
one from left FX return, one from right FX return, with each of the console's input channels panned hard-left/hard-right (this assumes the FX unit has a stereo return).

Instructions

1. • 1

     Place your mixer in a location that will allow you to hear the sound coming from the speakers clearly. The best placement is opposite the speakers, centered between the left and right pair. Connect the power supply to your mixer.
     

   • 2

     Connect the female end of an XLR cable to a microphone. Run the other end of the cable to your mixing board. Plug the male end into the "Mic" port of an open channel. These channels provide the preamps that will shape the sound characteristics of the microphone signal, processing them for output. Repeat the process for each microphone in your rig
     

     
     

   • 3

     Connect one end of a balanced 1/4-inch cable to the left channel jack labeled "L" found on the "Main Out" panel. Connect another cable to the right channel jack with the "R" label. Connect the opposite end of each cable to the matching left and right inputs on you amplifier.
     

   • 4

     Power on your mixer and amplifier. Test each microphone connected to the mixer for output.
     

   • 5

     Adjust the volume of each microphone channel to create a balanced mix. Use the "EQ" knobs to shape the tone and cut out frequencies that are causing squeal and feedback.
     

   
   Audi Performance Chip
   

Get an "insert snake" which splits each of two TRS plugs into TWO TS plugs.
Plug the TRS ends into the MAIN INSERT jacks and each of the "TIP" plugs at the other end into inpout jacks of the destroyer. Plug the "RING" plugs into the output jacks of the destroyer. You will need a snake with at least two sets of splits. I use a Behringer PROCOM compressor. For those the TRS plugs go into the channel insert jacks and the tips and ring plugs go to the in and out of each channel of the compressor respectively.

You need to make special cables. The inserts send and receive via the TRS connectors. You will connect to the preamp output of the insert plug which is the "RING" of the jack sending that signal first to your comp and from there to your EQ and then back into the insert plug on the "TIP" of the TRS plug.

There are so many possibilities for connection it is not practical to try other than a very cursory explanation.

The first thing is WHAT channels (usually only microphones) do you want to have the compression on?

Then do you want the equalizer for all the output, or jsut parts of it. for all channels you cn take the outputs iof the board to the equalizer, and the output of the EQ to your power amps.
NOTE: all these interconnect should be balanced connecs either TRS or XLR cables.

For the compressor, you will probably select the mics into one of the SUB busses and send that to the compressor, then feed the output of the compressor back into the board on an auxilary channel input into the main mix...

For the mic channels you will NOT have the L-R button selected, but instead the desired Sub Buss.

Sending diagrams are near impossible on this system...