User's Manual EQU Series 15/31 Band Graphic Equalizer +18 +18 0dB 0dB - - R LTO www.altoproaudio.com Version 1.
SAFETY RELATED SYMBOLS wire or disconnect the wiring of protective grounding terminal. CAUTION Operating Conditions This apparatus shall not be exposed to dripping or splashing and that no objects filled with liquids, such as vases, shall be placed on this apparatus. To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture. Do not use this apparatus near water. Install in accordance with the manufacturer's instructions.
Preface Dear Customer: Thanks for choosing LTO Graphic Equalizer and thanks for choosing one of the results of TEAM job and researches. LTO AUDIO For our LTO AUDIO TEAM, music and sound are more than a job...are first of all passion and let us say...our obsession! We have been designing professional audio products for a long time in cooperation with some of the major brands in the world in the audio field.
TABLE OF CONTENT 1. INTRODUCTION ..........................................................................................................................4 2. FEATURE LIST ............................................................................................................................4 3. CONTROL ELEMENTS ................. .............................................................. ..................................4 3.1 The Front Panel 3.2 The Rear Panel 4. INSTALLATION & CONNECTION ........
1. INTRODUCTION Thank you very much for expressing your confidence in LTO products by purchasing our EQU Series Graphic Equalizers. With the EQU Series you have acquired an extremely musical and flexible Graphic Equalizer. The high-end EQU Series are based on many years of experience and are designed to provide a permanent precise equalization to the musician, performer, studio engineer and sound contractor.
EQU131VU Front Panel 11 31 Band Graphic Equalizer +12 +6 +17 +13 LTO R POWER OUTPUT +9 LTO R 0dB 0 EQU131VU -9 HI-PASS LOW-PASS BY-PASS RANGE -13 ON - -12 - 6 OFF 40Hz 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 16 KHz 2 1 25 31.5 40 50 63 80 100 125 3 124 13 5 7 98 3 160 200 250 315 400 500 630 800 1K 1.25K 1.6K 2K 2.5K 3.15K 4K 5K 6.3K 8K 10K 12.
2. Level control This control sets the input signal level to the equalizer. Its "0dB" position is unity gain (no boost or attenuation). If the clip LED(5) is light continuously, turndown this control until it only flickers occasionally. 3. High pass filter This button electronically inserts a filter into the signal path, which cuts the low frequencies at 40Hz (12dB per octave). The LED (12) indicator lights when the button is pressed and this filter is serving in the circuit. 4.
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NOTE : While you can use any input connector with any output connector, only one set of these connectors is to be used at one time, detail wiring and connection, please refer to 4.2 audio connection. 18. Ground lift switch This switch is used to disconnect the signal ground from the mains and chassis earth. If it is determined that the equalizer is the cause of hum or buzz in your system due to a ground loop, move this switch to the "lift" position. 19.
- In Line Connection For these applications the EQU Series Graphic Equalizer provides 1/4" TRS connectors, XLR connectors and RCA connectors to easily interface with most any professional audio device. Follow the configuration examples below for your particular connection.
5. APPLICATION 5.1 The Sound Frequency In recording studios as well as stage or radio plays, the EQU Series Graphic Equalizer will be your valuable sound tool to modify the frequency "contour " of a sound .but first of all , you should clearify the typical frequency of each instrument and voice, so that can you obtain nice results in terms of sound characterization. The tables on the following pages give you an idea of specific frequencies and their acoustic significance.
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.
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7. WARRANTY 1. WARRANTY REGISTRATION CARD To obtain Warranty Service, the buyer should first fill out and return the enclosed Warranty Registration Card within 10 days of the Purchase Date. All the information presented in this Warranty Registration Card gives the manufacturer a better understanding of the sales status, so as to purport a more effective and efficient after-sales warranty service.
