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User's Manual
ALTO Q 5-BAND PARAMETRIC EQUALIZER
R
LTO
www.altoproaudio.com
Version 2.1 Dec. 2002
English
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the recommended fuse type as indicated in this manual. SAFETY RELATED SYMBOLS Do not short-circuit the fuse holder. Before replacing the fuse, make sure that the product is OFF and disconnected CAUTION from the AC outlet. RISK OF ELECTRIC SHOCK DO NOT OPEN Protective Ground This symbol, wherever used, alerts you to the pre- Before turning the product ON, make sure that it is sence of un-insulated and dangerous voltages with- connected to Ground. This is to prevent the risk of in the product encl
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PREFACE Dear Customer: Thanks for choosing LTO-Q 5-Band Parametric Equalizer and thanks for choosing one of the results of LTO AUDIO TEAM job and researches. 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. The LTO line presents unparalleled analogue and digital products made by Music
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TABLE OF CONTENT 1. INTRODUCTION ....................................................................................................................................4 2. FEATURES ............................................................................................................................................4 3. ELEMENT CONTROLS..........................................................................................................................4 3.1 The Front Panel 3.2 The Rear Pan
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1. INTRODUCTION With LTO-Q you have acquired an indispensable toll to add clarity and flexibility to your music. The LTO-Q 5 bands parametric equaliser will provide precise audio signal control to fixed sound installation, live performance and studio applications. Thanks to the use of selected and expensive components the performances of LTO-Q are worth much more than its price: Variable Q controls allow you to notch out unwanted frequencies while sweepable frequency control add maximum flexibil
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5.The INPUT control You can control the amount of the audio signal fed into your LTO-Q via this control. The range goes from -15dB to +15dB. 6.The HIGH CUT control This control, when activated will cut the high frequencies with a slope of 12dB per octave in a range of 2.5 kHz to 30 kHz. So if you set this control at the maximum position of 30 kHz, the audio signal will pass through without alteration. 7.The LOW CUT control This control, when activated will cut the low frequencies with a slope of
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13.AC Inlet After the correct voltage has been set you can connect the AC plug to the unit and in the AC power socket. 14.Input Connectors Both XLR and 1/4" TRS jack input connectors are supplied in your LTO-Q for maximum flexibility. 15.Output Connector Both XLR and 1/4" TRS jack output connectors are supplied in your LTO-Q for maximum flexibility. 4. INSTALLATION & CONNECTION 4.1 Mains Connection A Main AC cable that meets all the international safety regulations is supplied with your LTO-Q. P
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21 3 1 2 1 2 1 2 1 2 1 2 3 3 3 3 3 1 2 3 Balanced Tip Tip Ring Ring SLEEVE RING TIP TIP RING SLEEVE Sleeve Sleeve 1 1 2 2 3 3 Tip 1 Ring 2 TIP RING SLEEVE Sleeve 3 Unbalanced Tip 1 Ring 2 TIP RING SLEEVE Sleeve 3 Tip 1 2 Sleeve 3 TIP SLEEVE 1 Centre 2 3 Screen Tip Tip TIP SLEEVE SLEEVE TIP Sleeve Sleeve Tip Tip Ring Ring TIP RING SLEEVE SLEEVE RING TIP Sleeve Sleeve Tip Centre Sleeve Screen TIP SLEEVE Tip Centre Ring Sleeve Screen TIP RING SLEEVE 1 1 2 2 3 3 - Insert Points Connection If you are
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5. APPLICATION 5.1 The Frequency Range of music Instruments Please look at the following table. It gives you an idea of the frequency coverage of the main musical instru- ments and the human voice. Select a specific instrument and start to "play" with your LTO-Q applying the five bands available on the covered frequencies. Adjust GAIN first and then FREQUENCY and finally Q. See how much control your LTO-Q will give you allowing a perfect contour of your sound. Mid C CDEFGABCDEFGABCDEFGABCDEFGABC
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5.2 Using your LTO-Q in a sound reinforcement system You can successfully use your LTO-Q in a sound reinforcement system in order to: Cut out undesirable frequencies such as tape hiss and/or floor rumble. Create sounds effects enlarging the stereo image. Eliminate feedback using very sharp Q control on selected frequencies. Overboost or overattenuate selected frequencies thanks to the overlapping frequency range of the five bands available. 5.3 Application on single instrument If you wish to use
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6. TECHNICAL SPECIFICATIONS AUDIO INPUT Type Active balanced XLR and 1/4" JACK Impedance Balanced: 50kOhm Unbalanced: 25kOhm Operating level +4dBu/ 10dBV Maximum input level Balanced and Unbalanced: +18dBV >55dB @1kHz CMRR AUDIO OUTPUT Type XLR and 1/4" JACK Impedance Balanced: 60Ohm Unbalanced: 30Ohm Maximum output level +18dBV SYSTEM SPECIFICATIONS Bandwidth 18Hz to 30kHz at 3dBV 0.02% typ. 1kHz, @+4dBu THD+N% 0.04% typ. 1kHz, @ 10dBu 0.01% typ IMD >-92dBr unweighted 22Hz to 22kHz Noise Freque
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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. Please fill out all the information carefully and genuinely, miswriting or absence of this card will
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SEIKAKU TECHNICAL GROUP LIMITED No. 1, Lane 17, Sec. 2, Han Shi W. Road, Taichung, 401 Taiwan http://www.altomobile.com Tel: 886-4-22313737 email: info@altomobile.com Fax: 886-4-22346757 All rights reserved to ALTO Mobile. Due to continued development in response to customer feedback, product features, specifications and/or internal/external design may be changed without prior notice. No photocopying, translation or reproduction of any part of this user c manual is allowed without prior written
