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Monitering in stereo, summing to mono for FOH: Best way?

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  • Monitering in stereo, summing to mono for FOH: Best way?

    So far, I have done it by sending the output from the left XLR out of my stereo keyboard amp (Motion Sound KP200s) to FOH. But the amp puts out too weak a signal to be useable for some PA setups, plus it's pretty well trashed after 7 years of use- so as of late I have been monitering in mono with a Yamaha MG-series mixer and Radial Duplex DI, feeding an Alto 12" powered speaker with the return of the DI. I have a lead on a pair of used QSC K12's and may go back to stereo monitering if I can get them.



    So how do YOU do it, that gives good results- minimizing phase issues, etc.? (and thanks for reading).
    Gear: a room full of really LOUD plastic crap

  • #2
    I'm confused why you would what to do this. I love a stereo field, but I want to hear what the FOH hears! Some things sound *way different* in mono, chorus in particular.
    <div class="signaturecontainer">--<br><br>Hammond: BC, M3, Split L111, L122 / Leslie: 51, 760 / Yamaha: DGX-620, PF-85<br><br>Follow my new band, <a href="http://DrBombay.ca/connect.html" target="_blank">Dr. Bombay</a>! We're going to be organasmic!</div>

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    • #3
      I too am a little confused why you would feel the need to monitor yourself in stereo. I do the exact opposite. I monitor in mono and send FOH a stereo line. I do this by sending the left MAIN output from my mixer to a powered monitor speaker, and then I send the stereo LINE output to FOH (unless the venue only accepts mono, then I just send them the left side, but that's rare).
      <div class="signaturecontainer"><font size="1">Roland JD-800, Korg Z1, Yamaha Clavinova CLP-350, Alesis Ion, Alesis QS8.2, Kawai K3M, Arturia CS-80V, VAZ Modular, co-author of MinimogueVA and Arppe2600va.</font></div>

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      • #4
        I've been working on this a little, and I'm not sure there is a best way to sum stereo to mono, while avoiding undesirable results, short of checking all of your patches and making sure the ones you use sound good in stereo and mono. I think your best bet is to either send stereo to the FOH, or just send one side to the FOH. But, I would like to hear a better answer.
        Check my band: SoulPlay - > http://www.youtube.com/watch?v=8TH9-e4FmaE
        Key Rig: Alesis Fusion 8HD; Alesis Vortex Keytar; Toshiba i7 laptop running Cantabile VST host with IK Multimedia Total Workstation Bundle, NI Vintage Organs, Tyrell N6, Sylenth1, Imperfect Samples Walnut Concert Grand, NI FM8; Tascam US-1641 USB MIDI/Audio Interface; 2 x RCF Art 310-A MK III series monitors.

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        • #5

          Is summing to mono a requirement?  I run "left and right" outputs from all three of my sound engines to stereo channels on my line mixer.   I then send a "left and right" output from my line mixer's main outs to my stage monitors and a "left and right" output from my line mixer's MON out to the FOH.  I would consider this to be a "stereo" setup since there are two channels from end to end.   However, because I pan both the Left and Right inputs to "center" on my Line mixer - I've heard it described as "dual mono".   Either way - the resulting sound (both in my monitors as well as in the FOH) sounds better than anything that I've tried to "sum"  (in my case by using the L/Mono output from the keyboards themselves into a single channel.)  As I've commented on numerous occasions - I can't explain the science behind the mono vs stereo debate ... I just know my ears like the approach I'm using best.

          The SpaceNorman

          www.facebook.com/SuperstarsOfRock
          www.souldoutrocks.com

          Keyboards and Tone Generators: Yamaha CP300, Kronos 88, Roland AX Synth, Motif ES Rack
          Keyboard Rack: Samson SM10 Line Mixer, Motu MIDIExpressXT MIDI Interface, Shure PSM200 IEM system, M-Audio Wireless MIDI, Live Wires IEM ear buds, iPad wOnSong.
          Stage Amplification: Stereo via 2 Yamaha DSR112s

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          • Stokely
            Stokely commented
            Editing a comment

            Related question: I'd like to assume that the results of connecting a mono out of a keyboard *should* be the same as connecting both and leaving the submixer (or main mixer) mono.  I guess the difference is in what's doing the sum-to-mono: the keyboard internally or a mixer.  Can there in fact be a difference?  

            One situation I know to avoid is taking a Left out to FOH and Right to a monitor, since then the keyboard would assume you are hooked up stereo and no summing would occur. 

            Gah I hate the whole stereo vs mono thing...I just got the whole "nobody runs stereo, we are in mono" speech from our guitarist/soundguy...he left out: "nobody in dinky bar bands" as I see some of you guys in larger acts going stereo just find.  Though I can see the problem depending on where the mains are in relation to the audience, we do sometimes have asymmetrical rooms.  In any case I tend to tone down crazy stereo fx in my patches.



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