Nady Systems GEQ 215 Typical Set-Up, Sound Reinforcement Applications, Studio Applications

TYPICAL SET-UP

The GEQ-215 graphic equalizer may be used wherever modification of the frequency contour of a sound system is needed. A graphic equalizer is a solution to any number of sound problems or creative urges.

Sound Reinforcement Applications

By routing the signal from the mixer to the main power amplifiers (or crossover), the overall frequency of the mix may be altered to do a number of things.

A. Through the use of a real-time audio spectrum analyzer, a calibrated microphone, and a pink noise source, the audio system may be “TUNED” to make the overall audio spectrum response of the audio reinforcement system and the room environment flatter in its frequency response.

B. By turning up the audio reinforcement system to the feedback point, then attenuating the oscillating frequency (1/3 octave resolu- tion), then turning the system up to attenuate the 2nd oscillating frequency, and then the 3rd, and so on, you can enable the entire audio system to have much more gain before feedback.

C. Amplifiers and speakers may be protected by the use of the LOW CUT feature of the equalizer. Wind noise or the loud percussive sound of dropped microphones, etc., could potentially cause damage to the amps and/or speakers. By rolling off the extreme LOW frequencies with the LOW CUT filter, a measure of protection is added to the system without severely affecting the overall sound quality.

D. In noisy environments, the audio signal may be tailored for better intelligibility and penetration. This is especially useful for public address systems.

E. Creative use of the equalizer allows shaping of the signal for a more pleasing sound or for special effects. The only limits are those of taste and imagination.

Musical Instrument Applications

A. Putting an equalizer in line with a musical instrument allows you to modify the sound of the instrument. You can brighten the sound, or add body to a thin sounding instrument, or even give the sound a totally different character.

B. An equalizer will allow you to eliminate unwanted sounds, like a 60-cycle HUM from a badly grounded amplifier.

Studio Applications

A graphic equalizer is one of the most useful tools in the sound engineer’s bag. NADY AUDIO equalizers offer the features and flex- ibility to perform where it counts in the studio.

A. Fix a track that doesn’t sound quite right. Put the equalizer in an effects send and return it to the MIX bus.

B. Create an artificial stereo by splitting a monaural signal and equalizing the split signals differently, then panning one equalized signal to the right and the other signal to the left.

C. Shape the sound by changing the frequency response of the track.

D. Special effects, like a telephone sound, can be created by cutting off the LOW end to 200Hz and the HIGH end to 6KHz.

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