Instruction/ maintenance manual of the product EQU Alto
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EQU Series User's Manual LTO R www .altoproaudio.com V ersion 1.0 April 2002 English 15/31 Band Graphic Equalizer - 0dB +18 - 0dB +18.
1 1 SAFETY RELA TED SYMBOLS CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN Protective Grounding Make sure to connect the protective grounding to prevent any electric shock before turning ON the apparatus. Never cut off the internal or external protective grounding wire or disconnect the wiring of protective grounding terminal.
2 Preface Dear Customer: Thanks for choosing L T O Graphic Equalizer and thanks for choosing one of the results of L TO AUDIO TEAM job and researches. For our L T O AUDIO TEAM, music and sound are more than a job...are first of all passion and let us say .
T ABLE OF CONTENT 1. INTRODUCTION ..........................................................................................................................4 2. FEA TURE LIST ............................................................................
4 EQU131 Front Panel EQU215 Front Panel EQU2215 Front Panel POWER 25 40 63 100 160 250 400 630 1K 1.6K 2.5K 4K 6.3K 10K 16K LEVEL 0 Channel One 25 40 63 100 160 250 400 630 1K 1.
5 5 EQU231TWIN 20 31.5 50 100 200 500 1.25K 2.5K 6.3K 12.5K 25 40 80 160 400 1K 2K 5K 10K 63 125 315 800 250 630 1.6K 4K 3.15K 8K 16K 20K LEVEL Channel One Channel T wo Dual 31 Band Graphic Equalizer 20 31.5 50 100 200 500 1.25K 2.5K 6.3K 12.5K 25 40 80 160 400 1K 2K 5K 10K 63 125 315 800 250 630 1.
6 1 1. VU meter This VU meter is used to indicate the output level. 12. High pass LED When the High pass filter(40Hz/12dB) is in active, this LED will light. 13. Low pass LED 14. Output level meter This output level meter is used to indicate the output level.
15. XLR input and output connector The XLR connector are actively balanced and are used to input/output the signal. 16. 1/4" TRS phone plug input and output connector The 1/4" TRS connector are actively balanced and are used to input/output the signal.
8 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.
9 Balanced Unbalanced TIP RING SLEEVE TIP RING SLEEVE TIP RING SLEEVE TIP SLEEVE TIP SLEEVE TIP RING SLEEVE TIP SLEEVE TIP RING SLEEVE SLEEVE RING TIP SLEEVE RING TIP SLEEVE TIP Tip Ring Sleeve Tip Ri.
CDEFGABCDEFGABCDEFGABCDEFGABCDEFGABCDEFGABCDEFGABCDEFGABCDEFGABC Hyman gearing range VOCAL 25 31 40 50 62 80 100 125 160 200 250 320 400 500 640 800 1K 1.
11 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.
12 Ty p e E QU131 EQU215 EQU2215 EQU131VU EQU231VU / 231LED 2 15 Band: 2/3 octave , ISO spacing (1H series) 2 15 Band: 2/3 octave , ISO spacing (2H series) 1 31 Band: 1/3 octave , ISO spacing (1H series) 2 31 Band: 1/3 octave , ISO spacing (2H series) 6.
13 7. W ARRANTY 1. W ARRANTY REGISTRA TION CARD T o obtain Warranty Service, the buyer should first fill out and return the enclosed W arranty Registration Card within 10 days of the Purchase Date.
An important point after buying a device Alto EQU (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Alto EQU yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Alto EQU - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Alto EQU you will learn all the available features of the product, as well as information on its operation. The information that you get Alto EQU will certainly help you make a decision on the purchase.
If you already are a holder of Alto EQU, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Alto EQU.
However, one of the most important roles played by the user manual is to help in solving problems with Alto EQU. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Alto EQU along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
