R LTO User's Manual EQU MKII SERIES 15/31 BANDS GRAPHIC EQUALIZER www.altoproaudio.com Version 1.2 NOV.
IMPORTANT SAFETY INSTRUCTION CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN TO REDUCE THE RISK OF ELECTRIC SHOCK PLEASE DO NOT REMOVE THE COVER OR THE BACK PANEL OF THIS EQUIPMENT. THERE ARE NO PARTS NEEDED BY USER INSIDE THE EQUIPMENT. FOR SERVICE, PLEASE CONTACT QUALIFIED SERVICE CENTERS. WARNING To reduce the risk of electric shock and fire, do not expose this equipment to moisture or rain. Dispose of this product should not be placed in municipal waste and should be separate collection. 11.
IN THIS MANUAL: 1. 2. 3. 4. 5. 6. 7. INTRODUCTION.........................................................................1 FEATURES................................................................................1 CONTROL ELEMENTS................................................................2 APPLICATION............................................................................7 INSTALLATION & CONNECTION...................................................9 TECHNICAL SPECIFICATIONS........................
SP OT L IG 3. CONTROL ELEMENTS HT Front panel EQU131-MKII V2 8 6 2 12 5 10 7 INPUT LEVEL 31 Band Graphic Equalizer +12 +6 INPUT OUTPUT +12 SIG CLIP R 0 LTO 6 0dB -12 - 6 25 31.5 40 50 80 63 100 125 160 200 250 315 400 500 800 630 1.25K 1K 1.6K 2K 2.5K 3.15K 5K 4K 8K 6.3K 10K 12.
SP OT L IG 3. CONTROL ELEMENTS HT EQU231VU-MKII V2 7 8 3 6 5 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 INPUT LEVEL 20K 4 INPUT 0dB 0 -12 - 6 OUTPUT SIG CLIP SIG CLIP +12 +12 +6 OUTPUT 40Hz 16KHz 20 6 -12 3 10 6 50 100 VU HI-PASS LOW-PASS 0 3 5 ON 12 R LTO POWER OUTPUT R Channel One Channel Two Dual 31 Band Graphic Equalizer LTO 0dB -12 - 6 31.
SP OT L IG 3. CONTROL ELEMENTS HT 2 Level control This control sets the input signal level of the equalizer. The "0 dB" position is unity gain (no boost or attenuation). If the clip LED (5) lights continuously, turn down this control until it only blinks occasionally. 3 High-pass Filter This button electronically inserts a filter into the signal path, which cuts the low frequencies at 40 Hz (12 dB per octave).
SP OT L IG 3.
SP OT L IG 3.
4. APPLICATION 4.1 The Sound Frequency In recording studios as well as stage or radio plays, the equalizer will give you a perfect contour of your sound. But first of all, you should clarify the typical frequency of each instrument and voice, so that you can obtain nice results in terms of sound characterization. The following table will give you an idea of specific frequencies and their acoustic significance.
4. APPLICATION 4.2 Application on line instrument The EQU MKII 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 CH1 OUT CH2 OUT CH2 IN From line instrument outputs 20 25 31.5 40 50 63 80 100 125 160 200 250 315 To power amplifier inputs 400 500 630 800 1K 1.25K 1.6K 2K 2.5K 3.15K 4K 5K 6.3K 8K 10K 12.
5. INSTALLATION AND CONNECTION Ok, you have got to this point and you are now in the position to operate your equalizer successfully. However, we advise you to read carefully the following section to be real master of your own equalizer. Not paying attention enough to the input signal level, to the routing of the signal and the assignment of the signal will result in unwanted distortion, a corrupted signal or no sound at all. So you should follow this procedure for every single channel: 5.
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5. INSTALLATION AND CONNECTION 5.3 Line Connection For these applications the EQU MKII Series Graphic Equalizers provide 1/4" TRS connector, XLR connectors and RCA connectors to easily interface with most any professional audio device. Follow the configuration examples below for your particular connection.
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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 provide a more effective and efficient after-sales warranty service.
SEIKAKU TECHNICAL GROUP LIMITED NO. 1, Lane 17, Sec. 2, Han Shi West Road, Taichung 40151, Taiwan http://www.altoproaudio.com Tel: 886-4-22313737 email: alto@altoproaudio.com Fax: 886-4-22346757 All rights reserved to ALTO. All features and content might be changed without prior notice. Any photocopy, translation, or reproduction of part of this manual without written permission is forbidden. Copyright c 2007 Seikaku Group NF01783-1.
