Instruction/ maintenance manual of the product CLE8.0 Alto
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User's Manual LTO R www .altoproaudio.com V ersion 2.1 Dec. 2002 English CLE8.0 COMPRESSOR /LIMITER /GA TE.
1 SAFETY RELA TED SYMBOLS CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN Protective Ground T erminal AC mains (Alternating Current) Hazardous Live T erminal ON: Denotes the product is turned on. OFF: Denotes the product is turned off. W ARNING Describes precautions that should be observed to prevent the possibility of death or injury to the user .
PREF ACE Dear Customer: Thanks for choosing L T O CLE 8.0 Compressor/Limter/Gate 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 .
3 T ABLE OF CONTENTS 1. INTRODUCTION........................................................................................................................................4 2.1 Some technical stuff 2. THE CONCEPT BEHIND...............................
4 1. INTRODUCTION Y ou are now the Owner of an CLE 8.0 Compressor/Limiter/Gate. The CLE 8.0 is a very powerful dynamic processor . LT O We have included in it several innovative circuit designs that make the CLE 8.
5 2.1.2 Introducing Audio Dynamics Chart.1: The dynamic range capabilities of various devices Chart.2: The interactive relationship between the operating level and the headroom 2.
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 fre- quencies (hum) or at high frequencies (hiss) Such noise will inevitably interfere with the quality of your audio signal.
5. SC Filter switch Engaging this switch to insert a Low-cut filter in the sidechain path and thus limits the influence of low frequencies on the CLE 8.0's control processes. 6. Smart switch Engaging this button to switch the "Hard Knee" characteristics to SKC (Smart Knee Control).
3.3 Compressor Section 8 Pic.4: Compressor Section 11 13 14 12 15 16 17 150 6 1 70 15 30 0.1 0.05 0.3 3 5 1.5 0.5 -10 +20 -20 0 +10 COMPRESSOR(dB) RATIO(N:1) AUTO ATTACK(mSec) RELEASE(dB/Sec) OUTPUT GAIN(dB) -30 -40 +10 +20 1 2 10 4 1 1 1.
3.5 The Rear Panel 9 Pic.6: Pear Panel Of The CLE8.0 OUTPUT OUTPUT OUTPUT OUTPUT OUTPUT OUTPUT OUTPUT OPERATING LEVEL RETURN SEND 4dBu 10dBV INPUT OPERATING LEVEL RETURN SEND 4dBu 10dBV INPUT OPERATIN.
10 4. READY TO ROLL? 4.1 Expander/Gate Section Chart.3: Function of an expander Chart.4: SRC Curve characteristics of the Adaptive Expander 4.1.1 EXP/GA TE djustment A The EXP/GA TE control covers a very wide range and it is ef ficient with any working level.
11 Y ou need to be aware that higher ratio settings produce less natural sounds so if you wish a more minute effect on the dynamic range of a program you should use a Ratio of 4:1 or lower . 4.2.3 Attack control Output Hard Knee Threshold Gain 0 dB Rati o 2:1 Rati o 4:1 Limiter :1 SKC Curve Input Chart.
4.3 Peak Limiter Section 5. INSTALLATION AND CONNECTION 5.1 Mains Connection 5.2 Audio connection Chart.7: SGC characteristic of the limiter section 12 Chart.
13 a. Wiring Configuration Both types of connectors available on CLE 8.0 can be wired in balanced and unbalanced modes. Please see following drawing for details: b.
14 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 8.0 Compressor /Limiter /Gate fits into one standard 19" rack unit of space, and its height is 4H.
15 6. TECHNICAL SPECIFICA TIONS SYSTEM SPECIFICA TIONS EXP ANDER/GA TE SECTION INPUT T ype Active balanced XLR and 1/4"JACK Impedance Balanced >50KOhm, Unbalanced>25KOhm Operating level +4d.
16 SMART Enables the "Smart Knee Control" characteristics. SC FIL TER Allows for frequency dependent processing. AUTO Enable the automatic and program dependent setting of the Attack /Release times, disengaging the manual Attack /Release controls.
17 7. W ARRANTY 1. W ARRANTY REGISTRA TION CARD T o obtain W arranty Service, the buyer should first fill out and return the enclosed Warranty Registration Card within 10 days of the Purchase Date.
SEIKAKU TECHNICAL GROUP LIMITED No. 1, Lane 17, Sec. 2, Han Shi W . Road, T aichung, 401 T aiwan http://www .altomobile.com T el: 886-4-22313737 email: info@altomobile.
An important point after buying a device Alto CLE8.0 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Alto CLE8.0 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 Alto CLE8.0 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Alto CLE8.0 you will learn all the available features of the product, as well as information on its operation. The information that you get Alto CLE8.0 will certainly help you make a decision on the purchase.
If you already are a holder of Alto CLE8.0, 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 Alto CLE8.0.
However, one of the most important roles played by the user manual is to help in solving problems with Alto CLE8.0. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Alto CLE8.0 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
