Instruction/ maintenance manual of the product CLE4.0 Nilfisk-ALTO
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QUAD COMPRESSOR/LIMITER User's Manual LTO R www .altoproaudio.com V ersion 2.0 Dec. 2002 English CLE4.0.
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.
2 PREF ACE Dear Customer: 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 time in cooperation with some of the major brands in the world in the audio field.
T ABLE OF CONTENTS 1. INTRODUCTION......................................................................................................................................4 2.1 Some technical stuff 2. THE CONCEPT BEHIND...................................
1. INTRODUCTION Y ou are now the Owner of an CLE 4.0 Quad Compressor/Limiter . The CLE 4.0 is a very powerful dynamic LT O processor . We have included in it several innovative circuit designs that make the CLE 4.
5 Chart. 1 The dynamic range capabilities of various devices Chart. 2 The interactive relationship between the operating level and the headroom So the operating level must be as high as possible but not high enough to generate distortion. T ricky uh? There is a very easy way to obtain this.
6 3. CONTROL ELEMENTS Y our CLE 4.0 presents with four channels. Each channel is equipped with the same control elements: 3 push-button switches, 4 rotary controls and 17 LEDs. Y ou can operate in stereo mode via pressing the Couple switch. The details please refer to following content.
7 9. Threshold Control for Limiter The threshold Level for the Limiter will be adjusted by this control 10. Limiter LED When the Limiter is active, this LED will flash up. 12. V oltage Selector and Fuse holder Please make sure about the voltage available in your Country before connecting the unit to the AC socket.
8 4.1.2 Ratio ontrol C 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 1dB.
4.2 The 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.
10 b. In Line Connection Please see following drawing for details. 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 4.0 Quad Compressor/Limiter fits into one standard 19" rack unit of space.
11 AUDIO INPUT Active balanced XLR and 1/4"JACK Balanced: 50K Ohm Unbalanced: 25K Ohm alanced and nbalanced: B U +21 dBu +21 dBu AUDIO OUTPUT XLR and 1/4" JACK Balanced: 60Ohm Unbalanced: 30Ohm 20Hz to 20KHz at +0,-0.5dB 0.01% typ.1KHz ,@+4dBu 0.
11 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.
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.
An important point after buying a device Nilfisk-ALTO CLE4.0 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Nilfisk-ALTO CLE4.0 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 Nilfisk-ALTO CLE4.0 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Nilfisk-ALTO CLE4.0 you will learn all the available features of the product, as well as information on its operation. The information that you get Nilfisk-ALTO CLE4.0 will certainly help you make a decision on the purchase.
If you already are a holder of Nilfisk-ALTO CLE4.0, 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 Nilfisk-ALTO CLE4.0.
However, one of the most important roles played by the user manual is to help in solving problems with Nilfisk-ALTO CLE4.0. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Nilfisk-ALTO CLE4.0 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
