Crossovers

Crossover:

You will find a Crossover is a part of most live events and is usually found on a rack-mounted box with the amplifiers. Signals are sent from the mixing desk into the crossover which splits signals into two or more frequency bands e.g. Hi’s and Lows. Depending on the crossover for example if you had two inputs and four outputs you could then send the two hi outputs into the treble amp and two low inputs into the bass amp.

You can get crossovers in many different ways such as 2-way, 3-way stereo or 4-way mono.

The crossover also has mute switches for the Hi’s and Low’s on each Input so you can check individual (Bass Bins / Mid Tops) to make sure they are all working. You can also cut or boost the Low Frequencies, Mid / Hi Frequencies and sweep through the range of frequencies on each input.

Low Frequencies; 20hz – 180hz

Mid – Hi Frequencies; 180hz – 20khz

The crossover splits them twice so you will get a Low Frequency and Mid – Hi Frequency from each input. The crossover has been created to split these frequencies to prevent damage to the speakers and monitors that may not be able to support the frequencies provided by the signal. 

Introduction

The live project that is intended is a vocal act with a straightforward backline set-up. During this I intend to use a Bi-Amplified PA system, containing (1 Microphone [SM58] , 2 Mid Top speakers, 2 Bass Bin’s, 2 wedge monitors and a mixing desk, however there is no specific mixing desk in mind at this current stage. [Possibly the Yamaha LS9, due to this desk being digital based and its wide range of E.Q and FX settings limiting the amount of equipment used--or the Allen and Heath GL2400 because of its wider range of channels, and the larger capacity Front of House based effects and equalizers] Though, I will judge this at a later stage.) This live sound set up is going to be basic to demonstrate my ability at mixing and operation during a live mix. 

The mix is going to be conducted using multi-track recorded from pub band Rough Justice, performing Pink Floyd's - Time. 

The mix contained:-

Kick
Snare
Tom 1

Tom 2

Bass

Guitar
Guitar L

Guitar R 

Synth
Vocal - Matt
Vocal - Tom

There will be a Multi-Band EQ, a reverb unit, a Gate, and a Compressor unit, all of these products will be used simultaneously during the live mix. 

The mix contained full use of panning, EQ, and a full array of available equipment.