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L-629 Compressor

1. Page 5 PRODUCT SPECIFICATION Parameter Value System 500 Series Operating voltages 16 V Power supply current 50 mA Audio input symmetrical Input impedance 10 kQ Input level range FIXED IN mode 1 55 V or 3 1 V Input level range AUTO IN mode 200 mV to 10 V Audio output symmetrical Output impedance 75 kQ Output level when COMP OFF 3 1V Output level when COMP ON 1 1 V to 8 7 V Dynamic range 100 dB Maximum distortion 0 04 Attack Time range 0 02 ms to 160 ms Release Time range 40 ms to 2 5 sec Level meter range 18 dB to 12 dB Lipinski Sound Corporation Confidential Copyright 2010 8 Page 6 FRONT PANEL DESCRIPTION LIPINSKI L 629 1 2 FIXED IN AUTO IN 3 ATTACK TIME ms 4 LINK RELEASE TIME ms Lipinski Sound Corporation CO N OOA COMP OFF ON If pressed compressing unit is turned on Otherwise the device acts like a linear amplifier TAPE SIMULATION Compression ratio for high tones is increased by 3 dB what sounds like a magnetic tape FIXED IN AUTO IN Turning the pre compression unit on or off LINK Socket for linking two L 629 s when in stereo mode RELEASE TIME ATTACK TIME COMP RATIO COMP PEAK LEVEL Indicates peak levels before IN and after OUT compression OUT LEVEL Confidential Copyright 2010 9 Page 7 QUICK GUIDE TO USING THE L 629 COMPRESSOR
2. L 629 Compressor Lipinski Sound Corporation IPINSKI O U N D c J User Manual LPNSKI 1 629 R TAPE SIMULATION Sir FIXED IN S AUTO IN 500 series module Confidential Copyright 2010 1 Page CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER OR BACK NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED SERVICE PERSONNEL PRECAUTIONS AND SAFETY CONSIDERATIONS We designed our product with maximum care in accordance with international safety standards CAUTION Always follow the basic precautions listed below to avoid the possibility of physical injury to you or others or damage to the device or other property These precautions include but are not limited to the following Read setup instructions provided by us Follow these instructions Always insure that the compressor is properly grounded Only use accessories manufactured specified or recommended by Lipinski e Do not use un authorized main cables e All servicing must be performed by our qualified personnel e Do not expose this product to moisture rain or water or direct sunlight e Insure adequate air circulation around your compressor Power sources Connect this unit only to power sources specified in the Operating Instructions and as marked on the unit e To avoid damage to your speakers and other playback equipment turn off power to all r
3. Mounting The L 629 Compressor requires a 500 Series rack First turn off and unplug your rack frame Make sure the slot you intend to use is clean and free of debris Set two switches accessible through the hole in the chassis in desired positions see the Features section The 6dB position should be chosen when input signal amplitude measured between differential signal lines is 1 55 V When this amplitude is 3 1 V the opposite position should be set Choose the desired pre compression unit Release Time value between 120 sec and 300 sec Firmly and evenly push the L 629 Compressor into place until it is well situated in the card slot Mount the L 629 front panel with two screws to the 500 series rack Note The screws are tight fitting Make sure to not cross the thread Plug your 500 series rack back into the AC source Set up and usage Plug input and output cables then power on the rack If the FIXED IN mode is used set proper signal level at its source The input level is set properly when 3dB and 6dB LED diodes blink occasionally and 9dB diode does not blink at all If the AUTO IN mode is used the device does the set up which is done when 12dB diode stops blinking Choose desired compression ratio attack and release time When the ratio is 1 4 only loud sounds are compressed Setting greater ratios result also in gaining low sounds When COMP is off the output level is ke
4. NG Our product is carefully packed by us to maximize safety in transport We advise that you unpack it on a soft thick surface carpet fitted carpet blanket etc It helps to save all original packing materials and use them when you move the product Lipinski Sound Corporation Confidential Copyright 2010 4 Page 3 FEATURES Basic principle of operation and ballistics based on the famous Fairchild compressor Patented circuit completely eliminating distortion on low frequencies and on low release time all other compressors on short release time and on low frequencies changes amplification within single sine wave commonly a major source of distortion Extremely fundamental design based on patented Lipinski Square circuitry No capacitors in the signal path No Integrated Circuits IC s in the signal path Only 0 04 maximum distortion with the highest 18dB compression Extremely fast attack time 0 01ms 1 5th 20kKHz sine wave o gt gt Tape Simulation doesn t generate gimmicky even harmonic distortions This feature senses and triggers compression on high frequencies correction within control network Auto gain 5 sec attack time and 5 min release time Auto control has ballistics similar to VU meter it is based on photo resistor completely eliminates distortion with zero adjustment error quality on output signal totally independent of input level Dual peak meter pre and post compress
5. V measured between signal line and ground Caution When signal with long piano periods is applied the effect may be compromised Extremely low distortion 0 04 By using our patented compressing unit our device can reach unusually low distortion LINK Socket In stereo recordings identical compression ratios in both channels are necessary You can achieve this by linking two L 629 s together with LINK sockets Input and output peak level indicators To show the difference between signal levels at input and output two peak level indicators are used Lipinski Sound Corporation Confidential Copyright 2010 6 Page 4 DESCRIPTION Nowadays the Fairchild compressor is the most expensive classical professional audio device and its price reaches 30 000 Not only has the Lipinski Sound L 629 Compressor the same principle of operation but also has the slightest distortion and the best microdynamics compared to other available products L 629 Compressor s principle of operation is identical to the legendary Fairchild compressor In both compressors output signal is detected which results in loading the compressing capacitor In both devices the higher the voltage on the compressing capacitor is the lower the gain is However the Fairchild compressor assembled over 50 years ago has significant distortion and quite low dynamics To improve that the new method of gain adjusting has been devised and patented However i
6. elated components before making any connections Heat Do not use this unit near heat sources including heating vents stoves or other appliances that generate heat It should not be placed in temperatures less than 40 F or higher than 95 F Lipinski Sound Corporation Confidential Copyright 2010 2 Page CONTENTS 1 INTRODUCTION 2 UNPACKING 3 FEATURES 4 DESCRIPTION 5 PRODUCT SPECIFICATION 6 FRONT PANEL DESCRIPTION 7 QUICK GUIDE TO USING THE L 629 COMPRESSOR Lipinski Sound Corporation Confidential Copyright 2010 oO aoa N oa A Ff 10 3 Page LIPINS KT Welcome to the Lipinski family of electronics Our L 629 compressor packs a few very unique features Take time and familiarize yourself through this manual so you can get the most from Lipinski products Lukas A Lipinski Executive Director 1 INTRODUCTION You have selected Lipinski equipment which hails from thirty years of recording experience of Mr Andrew Lipinski and his devotion to state of the art sound This L 629 Compressor has unusual features such as Tape Simulation system Pre compression system Low frequency distortion elimination system Our L 629 Compressor is different from most devices you have had a chance to use It is based on the fabled Fairchild Compressor The signal path is free of capacitors and integrated circuits You can also use the LINK socket for joining two devices in stereo mode 2 UNPACKI
7. ion Hard wiring option for stereo operation Low frequency distortion elimination system In analogue compressors when short release time is set low frequency input signals are considerably distorted It occurs because the gain changes during a single period of the signal The Lipinski Patented circuit designed by our engineers eliminates this effect thoroughly Tape Simulation system In a typical audio signal low frequency components have greater level than high frequency components Standard compression mode treats equally all frequencies which makes the sound very sharp By turning Tape Simulation on compression for high frequency components is increased by 3 dB Lipinski Sound Corporation Confidential Copyright 2010 5 Page Pre compression unit Proper signal level should be applied to the input of the main compressing unit You can either set it at the source of the signal FIXED IN or let the device control it automatically AUTO IN When the signal level is set at its source its amplitude could be set to 0 775 V or 1 55 V chosen by a switch on the mainboard The device can also control the input signal level automatically To achieve this a pre compressing unit is used Its attack time is about 4 seconds and release time can be set between 120 and 300 sec This results in nearly constant signal level at the input of the main compressing unit So the signal level at the input of the device could be from 100 mV to 5
8. n the Lipinski L 629 compressor variable resistance of the semiconductor circuitry effecting gain changes This patented circuitry does not add any distortion to the signal The gain control unit is symmetrical in both of the devices although the nonlinearity of the variable transconductance vacuum tubes is far higher than in L 629 s patented circuitry Moreover in Fairchild compressor apart from significant distortion low dynamics and the nonlinearity there are 4 transformers and a few serial capacitors in the signal path As a result of this the Fairchild compressor adds 1 distortion with the dynamics of only 70 dB Compared to the Fairchild the L 629 has an 0 04 distortion when maximum compression ratio and input signal level at 10 dB is applied In addition its dynamics reach 100 dB noises are 30 dB lower than in the Fairchild Not only has the L 629 no IC s in the signal path but also its signal path contains no transformers and capacitors The L 629 is designed using pure A class components with minimum feedback making the microdynamics outstanding In addition the nonlinear distortion can reach 10 when low frequency signal is applied and short Release Time is set which is a problem for all compressors Innovative circuitry in the L 629 which eliminates such distortion thoroughly has been devised and patented No other analogue compressor has such a feature Lipinski Sound Corporation Confidential Copyright 2010 7
9. pt at 3 1 V and output level setting in inactive Turning COMP on enables output level setting Link two devices with the cable with 1 8 stereo jacks if you work in stereo mode It will eliminate the impression of moving sound sources Lipinski Sound Corporation Confidential Copyright 2010 10 Page LIPINSKI We wish you fantastic unforgettable moments of audio performance The Lipinski Team Lipinski Sound Corporation Confidential Copyright 2010 11 Page

L-629 Compressor

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