An interface for my newly built theremin

Discussion in 'The Projects Forum' started by eswara1997, Apr 8, 2014.

  1. eswara1997

    Thread Starter Member

    Dec 14, 2013
    I just completed a small theremin project. I now have it built using prototype materials. It runs on 5v. When i first finished it, i was low on time and i used a mini amp to connect to for an audio signal which i then connected to an ipad sound visualizer. So i converted to sound to visual. This was a hassle, and it was weak. I now want to directly connect the electrical output to my computer. I'm considering purchasing an interface, possible this:

    This way i can take a guitar input cable and directly connect it. Then i can run that to my mac and use audacity to visualize my theremin sine waves. I'm skeptical about this method and i want to make sure it will work before i purchase my mixer. Another doubt i had was power. I don't want to connect my theremin to 15 volts of electricity. I don't know how these mixers work so any clarification to address my concern will be appreciated.
  2. Metalmann

    Active Member

    Dec 8, 2012
    Interfaces are going way down in price the last few years.
    I have owned several Behringer products over the years, even though some people put their products down, as being cheaply made.

    I just bought this Focusrite interface with mic pre-amps.:

    Almost bought this guy:

    The model you are looking at should do fine.

    This guy would be much better if you want to stick with Behringer:

    Look for the best pre-amps and the lowest latency.

    Here's a lower priced interface:

    Lots of options nowadays.:cool:
  3. #12


    Nov 30, 2010
    There is no concern about 15 volts getting into your Theremin. A capacitor can pass the audio signal and block any DC component with very little cost or effort. Your pre-amp probably already has one in it.