Question about an AMP and Mixer

Discussion in 'Location Recording' started by kimbhoot, Oct 17, 2013.

  1. kimbhoot

    kimbhoot Active Member

    I'm completely clueless when it comes to professional audio setup. I've been tasked to manage a small live show that involves some acoustic performance. So I started calling local audio rental places, then I ran into someone who is selling some church old audio equipment.

    It includes a Mackie FR1400 AMP, and a Yamaha Mixing Console MG 10/2.

    We have some Peavey TLS2X speakers that we plan to connect with the amp and mixer. Trying to figure out if it will work as I'm expecting. I plan to connect 2 mic's and a guitar to the mixer and from that to the Amp.

    Please shed some light if you can. Your response would be much appreciated.

  2. Boswell

    Boswell Moderator Distinguished Member

    It's hard to know what your expectations are. If you wire those pieces of gear together you will certainly get a loud noise, but sound quality won't be in the top bracket.

    What type of microphones do you intend to use?
  3. dvdhawk

    dvdhawk Well-Known Member

    Additional questions I think you may want to consider:

    Do you have any need for this equipment beyond this one event? (is it a wise investment vs. rental)

    How many people do you hope to have in attendance at this "small live show"?

    Is this event indoors?, and in a small-ish venue? (if you could describe the size of the coffee house, bar, night club, church, auditorium, conference center, gym, arena, outside)

    Is this a casual type thing, or is there something riding on how well the show comes off?

    Are the musicians the focal point, or merely background music?

    Are the musicians going to be satisfied with an entry level system?

    Will you have stage monitors available for the musicians? (add another amp, speakers, cables, and hopefully EQ)

    Do you have sufficient mics, mic stands, speaker stands, mic cables, speaker cables, heavy-duty non-hideous extension cords for power, a snake (as in wiring harness)?

    Will there be someone there who can mix and make adjustments to the sound as needed?

    Are you going to need any lighting?

    What value would you place on the peace-of-mind you would get from hiring a professional, and not having this on your list of things to worry about on the day of the event?

    Food for thought....
  4. dvdhawk

    dvdhawk Well-Known Member

    I'm going to just bump this to give the (first time) Original Poster a better chance of finding it again, since it's now been moved to the proper forum.

    EDIT: Better yet, I see there's a forwarding link left in the Studio Construction/Acoustics forum pointing them here- never mind.
  5. kimbhoot

    kimbhoot Active Member

    Sorry for the late response. The event was successful other than the fact people on the back complained the vocal was very low. we ended up renting a mixer which had a build in AMP.
    I also ended up buying the Mackie FR 1400 and the Yamaha mixer. it was fairly low priced so I couldn't pass up. one interesting thing I noticed was, when I connect a guitar to the mixer and to the amp, I don't get any feedback from the speakers. now sure why!

  6. Boswell

    Boswell Moderator Distinguished Member

    This could be read two ways: either as a result of the concert usage you have learnt how to control feedback, which is great, or that you didn't check what you had typed and you meant "Not sure why". Or perhaps you meant you could not hear the guitar through the stage monitors. Or maybe something different.

    Either way, it's good that your event was successful.
  7. kimbhoot

    kimbhoot Active Member

    sorry for not being very clear. the guitar issue was with the Yamaha mixer and the Mackie Amp.
    I used the rental for the event which went well and yes, learnt a lot from this event.

    I will put the equipment together (Yamaha and Mackie) this week and start messing with it.
  8. pcrecord

    pcrecord Don't you want the best recording like I do ? Well-Known Member

    If you did'nt get to hear the guitar through the speakers (That's how I understand your use of the word feedback)
    it's probably because the signal wasn't routed properly. Most live acoustic guitar has preamps that need to be connected to a directbox than to the mixer.
    you should read the manual of the mixer to find out how to plug any source.

    Feedback is a term commonly use to refer to a signal going out of a speaker and re-entering the source (mic or guitar pickup) then going back to the speaker, creating a feedback.
    Although this could be wanted from an electric guitar player between his guitar and amp.. This is what any live sound tech want to avoid to go through the PA because it can damage your ears and the equipment.

    The best way to avoid feedback is to identify the frequencies the room will naturally emphasis and lower them with a 31band EQ. This could be easily done by using a spectrum analyser and a white noise or by provocating controled feedbacks with a mic in front of the speaker.

    If I was wrong about your use of the word feedback I apologize.
  9. dvdhawk

    dvdhawk Well-Known Member

    Have you all noticed how the complainers always hang out together in the back of the room?

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