In the first post of this series, we talked about health and safety. Now that we know the necessary precautions we have to take, we can talk about the main devices we are dealing with: amplifiers and mixers.
Amplifiers are not unique to music. In fact, they can be found in most, if not all, electronic equipment. Their basic function is to increase the magnitude of a signal, which is itself defined as a current that varies through time. Microphones, electric instruments and digital devices feed signals to audio amplifiers and mixers, which then amplify (i.e. increase loudness)them to make them come out of speakers with the volume and characteristics that we want.
The main difference between an amplifier and a mixer is the number of signals that each of them can handle. The amplifier is designed for only one, while the mixer can process multiple signals at the same time. Due to this, amplifiers tend to have a built-in speaker, while mixers don't.
If you ask an unsuspecting person what preparing for a music gig entails, they are probably going to mention things like rehearsing the songs or making sure the instruments are in good condition. These are, of course, very important parts of the process, but they are not even remotely the only ones.
An independent gigging musician is frequently their own agent, manager, producer, technician and stylist. Things like figuring out transportation to and from the venue are as much our responsibility as knowing how to play the songs of our set list. After all, it doesn't matter how good you are as a musician if you never arrive to your performance and no one can hear you!
A good example of this happened last Wednesday, when I took part of the civic flag raising ceremony that the Association of Jamaican Nationals Birmingham put together to commemorate the anniversary of the independence of Jamaica. I needed to bring my PA system for the event, which meant I had to use my car. Now, if you'v...