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Nilfisk-ALTO CLE2.0 - page 1
User's Manual LTO R www .altoproaudio.com V ersion 2.0 Dec. 2002 English COMPRESSOR /LIMITER /GA TE CLE2.0 ...
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Nilfisk-ALTO CLE2.0 - page 2
1 SAFETY RELA TED SYMBOLS CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN This symbol, wherever used, alerts you to the pre- sence of un-insulated and dangerous voltages with- in the product enclosure. These are voltages that may be sufficient to constitute the risk of electric shock or death. Protective Ground T erminal AC mains (Alternating Current) H ...
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Nilfisk-ALTO CLE2.0 - page 3
PREF ACE Dear Customer: Thanks for choosing L TO CLE 2.0 Compressor/Limter/Gate and thanks for choosing one of the results of L TO AUDIO TEAM job and researches. For our L TO AUDIO TEAM, music and sound are more then a job... are first of all passion and let us say ... our obsession! We have been designing professional audio products for a long tim ...
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Nilfisk-ALTO CLE2.0 - page 4
T ABLE OF CONTENTS 1. INTRODUCTION........................................................................................................................................4 2.1 Some technical stuff 2. THE CONCEPT BEHIND..........................................................................................................................4 2.2 V ol ...
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Nilfisk-ALTO CLE2.0 - page 5
1. INTRODUCTION Y ou are now the Owner of an CLE 2.0 Compressor/Limiter/Gate. The CLE 2.0 is a very powerful dynamic processor . LT O We have included in it several innovative circuit designs that make the CLE 2.0 a very versatile processor: smart and fast recognition of the program, adjustable Expander/Gate and very low distortion V oltage Control ...
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Nilfisk-ALTO CLE2.0 - page 6
5 2.1.2 Introducing Audio Dynamics The human ear can detect the noise generating by falling leaves as well as the roar generated by the taking off space shuttle. Unfortunately no analog, nor digital device can reproduce such wide spectrum. Please look at Chart.1 and you will see the difference if dynamic capacity of various devices when compare to ...
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Nilfisk-ALTO CLE2.0 - page 7
6 2.1.4 More about noise: Expanders and Noise-Gates A lot of instruments such as microphones, amplifiers, guitar pickups, etc generate some noise, either at low frequ- encies (hum) or at high frequencies (hiss) such noise will inevitably interfere with the quality of your audio signal. Now , if you scream into a microphone you will not hear the noi ...
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Nilfisk-ALTO CLE2.0 - page 8
3.2 Compressor Section 5. Threshold Control This control adjusts the threshold level for the Compressor section in the range of -40dBu to +20dBu. The SKC (Smart Knee Control) is applied to the audio signal, which is a maximum of 10dB above the set threshold. Above such level (10dB) a hard knee compression will be applied. 3. Ratio Control This cont ...
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Nilfisk-ALTO CLE2.0 - page 9
13. SC Monitor Switch Y ou can connect the sidechain control signal to the audio output by mean of this switch and at the same time you will also mute the audio input. In this way you can also monitor the sidechain signal being returned via external signal processors. 14. Sidechain Filter Switch A low-cut filter in the sidechain path is activated b ...
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Nilfisk-ALTO CLE2.0 - page 10
23. AC Inlet This connector is meant for the connection of the supplied main cord. Do not insert power cord into unit until voltage has been correctly set. Do not plug power cord into AC power until voltage has been correctly set. The fuse-holder above the AC connector on the rear of the chassis has 3 triangular markers(please refer to the above pi ...
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Nilfisk-ALTO CLE2.0 - page 11
10 27. Sidechain Send Through this 1/4" unbalanced jack the audio signal can be routed to an external processor . 28. Sidechain Return The return signal of an external processor will be processed through this 1/4" jack. 4. READY TO ROLL? 4.1 Expander/Gate Section Chart. 3 Function of an expander As we told you previously in this Manual th ...
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Nilfisk-ALTO CLE2.0 - page 12
11 4.2.2 Ratio control This control sets the change of input level to output level but only for the signals that exceed the threshold. The scale of the ratio control on the front panel (calibrated in dB) indicates how much input level is required to increase the output level by 1 dB. If you have a ratio equal to 1:1 you will get the same level of i ...
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Nilfisk-ALTO CLE2.0 - page 13
4.3 Peak Limiter Section How fast is the compressor to react to a signal which is above the threshold point? This is determined by the attack time. A longer attack time is advisable to process low frequencies while shorter attack time is preferable for high frequencies. IN this way you will avoid undesired dynamic distortion. But what about if you ...
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Nilfisk-ALTO CLE2.0 - page 14
13 a. Wiring Configuration Both types of connectors available on CLE 2.0 can be wired in balanced and unbalanced modes. Please see following drawing for details: For 1/4" Phone jack For XLR connector b. In Line Connection Please see following drawing for details. XLR T ype Unbalanced XLR T ype alanced B Tip Ring Sleeve Tip Ring Sleeve Tip Slee ...
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Nilfisk-ALTO CLE2.0 - page 15
Send Return Ti p Ring Sleeve 14 1/4" TRS insert Insert Leads 5.3 Rack ounting M The most secure mounting is on a universal rack shelf available from various rack manufactures or your music dealer . The CLE 2.0 Compressor /Limiter /Gate fits into one standard 19" rack unit of space. Please allow at least an additional 4" depth for the ...
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Nilfisk-ALTO CLE2.0 - page 16
15 AUDIO INPUT AUDIO OUTPUT SC INPUT SC OUTPUT EXP ANDER/GA TE SECTION Interactive Compressor 6. TECHNICAL SPECIFICA TIONS T ype Impedance Maximum input level T ype Impedance Maximum output level Bandwidth THD +N% IMD Noise Crosstalk T ype Impedance Maximum input level T ype Impedance Maximum output level T ype Threshold Ratio T ype Threshold Ratio ...
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Nilfisk-ALTO CLE2.0 - page 17
INDICA TORS POWER SUPPL Y DIMENSIONS WEIGHT POWER CONSUMPTION GAIN REDUCTION: 12 element LED INPUT / OUTPUT LEVEL: 8 element LED EXP ANDER/GA TE THRESHOLD: 2 element LED ( under"+" above"-") COMPRESSOR THRESHOLD: 3 element LED ( under"+" interactive"0" above"-" ) PEAK LIMITER THRESHOLD: 1 element LE ...
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Nilfisk-ALTO CLE2.0 - page 18
17 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. All the information presented in this W arranty Registration Card gives the manufacturer a better understanding of the sales status, so as to purport a ...
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Nilfisk-ALTO CLE2.0 - page 19
SEKAKU ELECTRON IND. CO., L TD NO.1, LANE 17, SEC. 2, HAN SHI WEST ROAD, T AICHUNG, 401 T AIWAN http://www .altoproaudio.com T el:886-4-22313737 email: alto@altoproaudio.com Fax:886-4-22346757 All rights reserved to AL TO. All features and content might be changed without prior notice. Any photocopy , translation, or reproduction of part of this ma ...
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