Nilfisk-ALTO EQU Equalizer In Sound Reinforcement Systems, Line Instrument, Mixing Console

5.2 Equalizer In Sound Reinforcement Systems

The EQU Series Graphic Equalizers can be used in the sound reinforcement systems to :

Eliminate unwanted sounds, such as the 60Hz Hum noise.

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

Special effects like telephone sounds are done by cutting off the low end to 200Hz and the high end to 6KHz.

Allow you to modify the sound of the instrument if put EQU Series Equalizer in line with a musical instrument. you can brighten the sound, and body to a thin sounding instrument, or you can give the sound a totally different character.

Fix a track that does not sound quite right, put the EQU Series Equalizer in an effects send and return it to the mix bus.

The following connection is probably most common field of application:

-Line Instrument

The EQU Series Graphic Equalizer can be used on an entire mix "In-line" between a instrument outputs and a power amplifier, and this is the basic application in the PA system to offer precise Equalization control.

CH1 IN

CH2 IN

From line instrument outputs

CH1 OUT

CH2 OUT

To power amplifier inputs

20	25	31.5	40	50	63	80	100	125	160	200	250	315	400	500	630	800	1K	1.25K	1.6K	2K	2.5K	3.15K	4K	5K	6.3K	8K	10K	12.5K	16K	20K	LEVEL
																															+12 +6	+17
																															0	0dB	HI-PASS LOW-PASS		BY-PASS	RANGE
																															-12 - 6 -
LTO												Dual 31 Band Graphic Equalizer																Channel One					40Hz	16 KHz	CLIP	6	12
EQU231LED																												Channel Two
																															+12 +6	+17	HI-PASS LOW-PASS		BY-PASS	RANGE
																															0	0dB
																																					ON
																															-12 - 6 -						OFF
																																	40Hz	16 KHz	CLIP	6	12
20	25	31.5	40	50	63	80	100	125	160	200	250	315	400	500	630	800	1K	1.25K	1.6K	2K	2.5K	3.15K	4K	5K	6.3K	8K	10K	12.5K	16K	20K	LEVEL						POWER

-Mixing Console

The EQU Series Graphic Equalizer can also be used on a single instrument by connecting to a mixing console's main inserts, esp for those consoles without built-in equalization circuitry.

Main Inserts

MIXING CONSOLE

										CH1 IN												CH1 OUT
																						CH2 IN										CH2 OUT
20	25	31.5	40	50	63	80	100	125	160	200	250	315	400	500	630	800	1K	1.25K	1.6K	2K	2.5K	3.15K	4K	5K	6.3K	8K	10K	12.5K	16K	20K	LEVEL
																															+12 +6	+17
																															0	0dB	HI-PASS LOW-PASS		BY-PASS	RANGE
																															-12 - 6 -
LTO												Dual 31 Band Graphic Equalizer																Channel One					40Hz	16 KHz	CLIP	6	12
EQU231LED																												Channel Two
																															+12 +6	+17	HI-PASS LOW-PASS		BY-PASS	RANGE
																															0	0dB
																																					ON
																															-12 - 6	-					OFF
																																	40Hz	16 KHz	CLIP	6	12
20	25	31.5	40	50	63	80	100	125	160	200	250	315	400	500	630	800	1K	1.25K	1.6K	2K	2.5K	3.15K	4K	5K	6.3K	8K	10K	12.5K	16K	20K	LEVEL						POWER

NOTE: Mono/Stereo Application

a. For mono application, please use the EQU131, EQU131VU mono Graphic Equalizer.

b. For stereo application, please use the EQU215, EQU2215, EQU231LED, EQU231VU or EQU231TWIN stereo Graphic Equalizer, either of the two channels can be used as L/R input & output.

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