Alto CLE8.0, User Manual

Page 1: ...User s Manual LTO R www altoproaudio com Version 2 1 Dec 2002 English CLE8 0 COMPRESSOR LIMITER GATE ...

Page 2: ... to qualified service personnel only Do not perform any servicing other than those instructions contained within the User s Manual When required either blow off dust from the product or use a dry cloth Do not use any solvents such as Benzol or Alcohol For safety keep product clean and free from dust If the plug does not fit your AC outlet seek advice from a qualified electrician To avoid the risk ...

Page 3: ...and our dreams paying attention to your suggestions and your comments Following this idea we create our products and we will create the new ones From our side we guarantee you and we will guarantee you also in future the best quality the best fruits of our continuous researches and the best prices Our LTO CLE 8 0 is the result of many hours of listening and tests involving common people area exper...

Page 4: ... 1 Master Control Section 3 2 Expander Gate Section 3 3 Compressor Section 3 4 Peak Limiter Section 4 READY TO ROLL 10 4 1 Expander Gate Section 4 2 Compressor Section 4 3 Peak Limiter Section 6 TECHNICAL SPECIFICATIONS 15 7 WARRANTY 17 5 INSTALLATION AND CONNECTION 12 5 1 Mains Connection 5 2 Audio Connection 5 3 Rack Mounting 3 5 The Rear Panel ...

Page 5: ...It is not just Music Yes a piece of electronic will produce some noise When the current flows through a conductor this will generate a certain movement of the electrons and therefore noise And throughout the whole spectrum of audio Imagine what happens when this inherent noise will be amplified Yes today one can use low noise components but still such components will present a certain level of res...

Page 6: ...n hand you increase the volume during low passages and decrease the volume during loud passages Unfortunately even the Great Houdini would not be fast enough to monitor carefully the speed of the musical signal and it would be impossible to detect sig nal peaks and consequently levelling them out Manual control is therefore out of question The answer is AGC automatic gain control a device that wil...

Page 7: ...tinuously below the set threshold while the noise gate will simply dramatically cut off the audio signal completely 2 2 Voltage Controlled Amplifier VCA The VCA is the soul of the CLE 8 0 and it is one of the best components available today in his category thanks to its exce llent performances in terms of distortion linearity noise and temperature stability 2 3 Inputs 2 3 1 Take it easy Balanced I...

Page 8: ...ut Output Meter Switch 7 Link CH 1 switch Every channel contains the Link CH1 switch except the CH1 Activating this switch will link the corresponding channel to CH1 and the CH1 will take control of the corresponding channel 3 2 Expander Gate Section Pic 3 Expander Gate Section 10 8 9 8 1 5 1 2 7 2 5 0 EXP GATE dB 45 OFF 15 RATIO 1 N 9 Ratio Control This control determines the expansion ratio when...

Page 9: ...shold level this signal will be com pressed and the LED lights up 13 Ratio Control The ratio between the input and output level of audio signals exceeding the set threshold level is determined by this control This control is manually adjustable from 1 1 to 1 14 Attack Control This control determines how fast the compressor is to respond to audio signals that will exceed the set threshold It can be...

Page 10: ...f the Peak Limiter is adjusted by this control 19 Peak Limiter LED This Led will light up when the Limiter function is activated These connectors are used to input the signal source You can input the signal via the balanced 1 4 TRS phone jack or XLR connector 21 Audio In 20 AC Inlet and Fuse Holder This connector is used to connect the supplied power cord Please check the Voltage accepted by the u...

Page 11: ...evel 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 If you have a ratio equal to 1 1 you will get the same level of input and output signal So no level change As we told you previously in this Manual the downward expander will reduce automatically th...

Page 12: ...hese peaks are consequently carefully regulated by the compressor Sounds of other nature will get advantages if longer attack times are used Anyway our advice is always to begin the process with longer attack times Then you can start gradually to reduce the attack time In the CLE 8 0 the attack time can be set in a range of 1 to 150 milliseconds This control determines how much time the compressor...

Page 13: ... a wide range of frequencies and you have chosen a longer attack time But if are using your CLE 8 0 as a limiter the fast high frequencies will pass through untouched because the attack time is too slow and such transients could cause distortion when the unit is connected to broadcast devices or taper recorders The solution in CLE 8 0 is represe nted by our Smart Gain Control SGC limiter circuit T...

Page 14: ...balanced Sleeve Tip TRS Type Balanced Tip Ring Sleeve TRS Type Unbalanced Tip Ring Sleeve Tip Ring Sleeve Tip Ring Sleeve Tip Sleeve Tip Sleeve Tip Sleeve Cent e r Cent e r Centre Screen Screen Screen 1 2 3 Tip Ring Sleeve 1 2 3 1 2 3 TIP SLEEVE TIP SLEEVE TIP RING SLEEVE TIP RING SLEEVE 1 2 3 2 1 3 2 1 3 Tip Ring Sleeve Tip Ring Sleeve Tip Ring Sleeve 1 2 3 1 2 3 1 2 3 Tip Ring Sleeve 1 2 3 Tip S...

Page 15: ...se do not place the CLE 8 0 Compressor Limiter Gate on high temperature devices such as power amplifiers etc to avoid overheating c Insert Points Connection In case you are using the main inserts of your mixing console and you have a single jack for SEND and RETURN you can use an insert Y cable Please see following drawing Send Return Tip Ring Sleeve 1 4 TRS insert Insert Leads 2 1 3 1 2 3 TIP RIN...

Page 16: ... gain IMD 0 01 Typical SMPTE Crosstalk 100dB 22Hz to 22Khz Type Smart Ratio control Expander Threshold variable OFF to 15dB Ratio variable 1 1 2 to 1 8 COMPRESSOR SECTION Type Smart Knee control Compressor Threshold variable 40dB to 20dB Ratio variable 1 1 to 1 Threshold Characteristic variable Smart knee control Manual Attack Time variable 1ms to 150ms Manual Release Time variable from 0 05s to 5...

Page 17: ...EDUCTION 8 element LED display 1 3 6 10 15 20 25 30 dB INPUT OUTPUT LEVEL 8 element LED display 24 18 12 6 0 6 12 18 dB Expander Gate Threshold 2 LED for under and above Compressor Threshold 3 LEDs for under Interactive 0 and above Peak Limiter Threshold 1 LED for indication of limiter function Function switch LED indicator for each POWER SUPPLY Mains Voltages 200 240VAC 50 60Hz Fuse 100 120VAC 63...

Page 18: ...d LTO of 1 year from the purchase date if you have completed the Warranty Registration Card in time 3 3 During the warranty service may repair or replace this product at its own option at no charge to you for LTO parts or for labor in accordance with the right side of this limited warranty 3 4 This warranty does not apply to the damages to this product that occurred as the following conditions Nor...

Page 19: ...ll 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 manual is allowed without prior written permission Copyright 2004 Seikaku Technical Group Limited c NF00940 1 0 ...