 Tear down this wall!  was the challenge issued by United States President Ronald Reagan to Soviet Union leader Mikhail Gorbachev to destroy the Berlin Wall, in a speech at the Brandenburg Gate near the Berlin Wall on June 12, 1987, commemorating the 750th anniversary of Berlin.n the 1963  Ich bin ein Berliner  speech, U.S. President John F. Kennedy stated the support of the United States for democratic West Germany shortly after the Soviet-supported Communist state of East Germany erected the Berlin Wall as a barrier to prevent movement from East to West.
Feedback happens when a microphone picks up sound from speakers and then pipes that same sound back through the speakers and picks it up again. The never-ending loop of ear-pain is frustrating to experience, but fairly easy to fix by adjusting the levels of the speakers and microphone.
Power up your mixer, your audio interface and your computer, and open up your recording software. Follow your manufacturer's instructions on the specific order in which you need to turn on each device. Connect your instruments to the mixer.If you're playing electronic instruments, run a cable from each device to a separate channel input on your mixer. If you're using microphones to record your music, connect your mic cables to your mixer inputs.Play your instruments and set your desired input and output levels for each channel on your mixer.nstructions. Following your manufacturer's instructions, connect your digital audio interface device between your computer and your mixer. This will be the USB or Firewire unit that converts the signal from analog to digital and sends it back and forth between the two devices.