Karaoke Forums

I just bought a Yamaha mixer, the MC124C. I haven't received it yet, but looking at the specs I realized it doesn't seem to have a mono out.

How can you obtain mono from a stereo output, then? Do I just pan everything left and use that, along with running mono out of my sound card? That seems wrong, somehow, or at least it seems like it would have impact on the mixing. And running mono out of the sound card is something I am not sure how to do, either.

Do I need to return the mixer?

Use 2 mono inputs for your backing audio.

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I can neither confirm nor deny ever having or knowing anything about nothing.... mrscott

How do you do that? It is a stereo output, unless I am mistaken. I looked at my M-Audio control panel, and see no mono out function.

If you use the line inputs of channels 1-8 (5/6 & 7/8 would actually be 2 channels usin the line/left/mono only) then pan straight up, a mono signal will yield in the final output.

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I can see how this would work to put in to channel 5 and 7 of the mixer. I am not so clear if I don't want to use those channels.

I know I will use channels 1-4 (with the compression I bought the mixer for in the first place) for mics. I usually have a 5th mic for me at the desk.  I then have a white/red output from my M-Audio card (or my laptop) that normally goes into the channels 11/12. So can I instead put left into channel 9, right into 11, wich are the left side of a stereo-only channel? Then I take it off of L, without panning hard left on the mics?

No those are stereo channel only.  If you are using your laptop, can't you set up the audio output properties to run mono out - I know in some cards you have that option?  Another possibility.  
Then you could always as a last resort just use a Y adapter & take both channels of the computer into 1 1/4" mono plug & run into the channel 7 mono.

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Is a wire a very good summing network?

I thought of using a small mixer to sum the channels to mono.

Like said, last resort.  It does work, but there are better ways.



That would work too.

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That got me investigating this again.  Active mixers are fairly expensive.

Passive with resistors can be made for a few dollars. Here are some good schematics
link

With passive there is no gain control..

Also I was looking at this


It wouldnt be hard to modify this for our purpose.

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Mostly in power and space -- I have the mixer, it is just having to tote it and connect it.

I don't think I am up for making my own box anymore, but it wouldn't be hard:

 http://www.rane.com/note109.html

I have that RS mixer, and I would think I might modify that box, actually. I don't really want the RCA jacks, but can use the 4 1/4" ones.

I think I may just cut one mic from my setup, after all. I run two wired, two wireless, and a wired one for me. I think I will cut one wireless and use the second wireless for me.  This will allow me to use 5/7 and not have to deal with the summing.

Thanks everyone -- now I know my options.

Just an update. I received the mixer, and I like it very much except for the maddening lack of a mono summing function.

For a while, I had the idea that group 1-2 would help me somewhat, until I discovered that group 1-2 just means L->1 , R->2 on the stereo channels.

For a while, I think I will just use my Behringer PMH3000 as the monitor amplifier, and use it's mono out for summing. Long term, I want to get rid of that and be in all one rack, so I will find some sort of thing that will work. If I had bought the MG124CX, I would give the mixer to my service club to replace the Alesis MultiMix8. But we would need an external effects processor.

I discovered that using the L output works fine with the stereo channels as well. I just hook 9 and 11 to the L and R output of my M-Audio card, and it works just as well as using 5-7.

So now I can run mono by just using the mono channels for mics, and using the L side of the two stereo channels for the music. The effects can be fed back in either via the Aux return or channel 7, and I still have channel 5 for my fifth mic.

I am happy -- now I can relegate my trusty Behringer PMH3000 to fixed duty at the state park for bluegrass music and impromptu karaoke. And I can use my new Yamaha mixer for my normal karaoke gigs, and have four channels of built-in compression. The rack space I save for the compressor can be used for another eq to process the effects send and the monitor channel, while still having two channels of EQ available for the main when I decide to use stereo.

If all your input are mono, then your out put will be mono too regardless of what the mixer out label says. (provided all channel are panned mid). I would use both L and R out put of the mixer and still sound mono.
Or do I missed something here?

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I can neither confirm nor deny ever having or knowing anything about nothing.... mrscott

All my inputs are not mono -- the sound-card out is stereo. So I take the left channel and feed it to channel 9/L, and the right and feed it to 11/L. That means I must use the left output.