Ashly CLX-52 User's Manual
Contents
1. ASFHLY CLX 52 Compressor Limiter Operating Manual Channel 1 Input Output Level dB E Channel 2 yut Output Level dB Clip CO 4 6 P 10 ssa FETU a e a 10 12 ss od T 5666090 oe 06060606 m x UEDRDEPEULUT CLX 52 i ut in 5 AG Oo 320 25 tad Oo on ERE py pq In oS Gain Threshold Ratio Attack Release Output Level In C Ashly Audio Inc 847 Holt Road Webster NY 14580 9103 Toll Free 800 828 8308 Telephone 585 872 0010 FAX 585 872 0739 www ashly com All Trademarks referred to herein are the property of their respective owners 042707 Rights Reserved Page 2 Operator Manual CLX 52 Compressor Limiter This page intentionally left blank Copyright 2006 Ashly Audio Inc Operator Manual CLX 52 Compressor Limiter Page 3 Important Safety Instructions Consignes de s curit lire attentivement CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated dangerous voltage within the product s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance instruc2. In Stereo Tie Goin Threshold Attack Release Output Level E TIP Detector Return Ducking In TIP Detector Return Ducking aie 100 240V 50 60Hz Eee z store Pott tes Ur en em ng Dentor end n ope he Sr a cloned Ring Detector SES CLX 52 Power 6 6 t NO Oo WAS ts WARNING arc Risk Of Hazardous Energy GE IN See Operating Manual m SS CAUTION or A 0 35A 30W L Input 1 Channel 2 Output Input 1 Channel 1 Output Copyright 2006 Ashly Audio Inc
3. to return to a Table Of Contents page Page 4 Operator Manual CLX 52 Compressor Limiter Introduction Congratulations on your purchase of the Ashly CLX 52 Peak Compressor Limiter The CLX 52 was designed to meet the need for universal peak sensitive automatic gain control AGC devices with exceptional audio performance and rugged durability The CLX 52 has the following key features Threshold control Input output meter with select switch Balanced XLR connectors A single TRS patch point detector loop Premium components throughout Quality construction through computerized automated assembly VVVVVV We are confident that you will be pleased with the high performance superb sound quality and reliability that Ashly is known for About Ashly Ashly Audio was founded in 1974 by a group of recording engineers sound professionals and electronics designers The first products were custom consoles for friends and associates but business quickly grew The philosophy established from the very beginning holds true today to offer only the highest quality audio tools at an affordable cost to the professional user ensuring reliability and long life More than thirty years later Ashly remains committed to these principles What Compressors And Limiters Do Limiting All musical programs have constant changes in loudness It is the job of a limiter to detect when the volume has exceeded a predetermined maximum safe level
4. and to then turn down the volume When the incoming signal returns to its original level the limiter should respond by restoring the gain to normal Thus when the level is within a specified safe range the limiter has no effect When an occasional peak occurs the limiter responds Compression A significant difference in dynamic range is achieved simply by changing the relationship between nominal signal level and threshold as a result of either increasing the GAIN and or decreasing the THRESHOLD control The most interesting effect to be noted however is seen by comparing the original input signal with the output signal The quietest portions of the original signal will be effectively increased in volume while the loudest portions of the original signal will be decreased In effect both ends of the dynamic spectrum will be pushed toward the middle More than anything else it is this double ended effect which distinguishes compression from limiting Copyright 2006 Ashly Audio Inc Operator Manual CLX 52 Compressor Limiter Page 5 CLX 52 Compressor Limiter A great deal of time was spent developing a wide bandwidth ultra low distortion low noise VCA voltage controlled amplifier The result is the CLX 52 a versatile and highly listenable compressor limiter suitable for use in professional sound reinforcement recording and broadcasting The CLX 52 has three different connector types gt 4 inch ster
5. cifications 10 Warranty 11 Page 6 Operator Manual CLX 52 Compressor Limiter Safety Instructions 3 2 Physical Description The CLX 52 is IRU and weighs 8 pounds CLX 52 Front Panel Introduction 4 CLX 52 5 Connectors amp Cables 5 Physical Description 6 Front Panel e EEE 3 TR S 58825550598 ASHLY wee Se AN Rear Pane e Installation 7 C jain Threshold Attock Release Output Level In Stereo Tie Goin Threshold Attack as Ge 2 D Typical Applications 8 TE TP m yp pp 1 Gain The Gain control adjusts incoming signal T In Out Switch This switch enables you to Troubleshooting 9 level to the VCA circuit It is always active so Switching out the limiter function has no effect on this control This control should normally be left at 0 to achieve accurate Threshold calibration 2 Threshold The Threshold control has a range of 40 to 22 dB allowing applications from low 8 level compression to high level limiting The Threshold control determines the audio level above which Gain Reduction occurs When the signal peaks exceed the selected threshold the LED comes on and gain reduction is occurring 3 Ratio This control determines the ratio of change in output level to changes in input level for signals above threshold The numbers 9 printed around the Ratio control are calibrated in db and indicate the increase in inpu
6. d washers when rack mounting the unit For mobile use the unit should be further secured as appropriate General Requirements The CLX 52 has specific physical electrical and signal requirements for proper operation These requirements will vary depending on your specific application setup and the settings on the unit When setting up and testing your system please take special care to double check all connections and settings Please refer to the specifications section of this manual for specific input output and other figures AC Power Your CLX 52 equalizer should be connected to a standard 3 wire grounded electrical outlet supplying 100 240 Volts 50 60 Hz To reduce the risk of ground loop hum connect all audio equipment to the same electrical power source Removal of the ground pin is both unlawful and dangerous as a potential shock hazard could result This unit will perform normally within the AC voltage range specified above Voltages less than this as found in brown out conditions may reduce performance In the event of a blown fuse replace only with same type fuse No user serviceable parts are inside the chassis Overall power consumption is less than 5 watts NOTE The power switch does NOT isolate the appliance from mains Make sure the mains power socket or an alternative disconnect device is near by and easily accessible When the product is connected to mains the line filter and the input of the fuse are ener
7. eo TRS jacks gt Three pin XLR type connectors gt Euroblocks These three connectors facilitate interfacing to most professional audio products Both inputs and outputs can be used balanced or unbalanced Connectors amp Cables Your CLX 52 Compressor Limiter is provided with three different connector types 1 1 4 inch stereo phone jacks TRS 2 Three pin XLR type connectors 3 Euroblock Connector When possible balanced connections are recommend between all components in your system as this eliminates ground loop induced hum and noise Tip Ring Tip Sleeve Ground Sleeve Ground gt Sal Balanced TRS Unbalanced TRS Positive Negative Ground D 0 Input Output Ground Negative Positive XLR Female CLX Connector Polarities Unbalanced Connections and Grounding If you must use unbalanced connectors the negative lead of the connector should be tied to the ground lead Using unbalanced connections could result in chassis ground loop noise Altering the signal chassis ground relationship in equipment connected to your CLX unit may eliminate the noise All Rights Reserved Safety Instructions 3 Introduction 4 CLX 52 5 Connectors amp Cables 5 Grounding Physical Description 6 Installation 7 Typical Applications 8 Troubleshooting 9 Dimensions 9 Spe
8. evel control A unique feature of Ashly Compressor Limiters is the incorporation of a double release time constant When a conventional compressor limiter is adjusted for slow release times transients such as mic pops may cause a severe reduction in gain followed by a slow fadeup making the action of the limiter very obvious With the double time constant release from gain reduction after a brief transient is always fast with a slower release after a sustained overdrive Copyright 2006 Ashly Audio Inc Operator Manual CLX 52 Compressor Limiter Page 7 CLX 52 Rear Panel ASHLY Detector Rourr Ducking Input fone 100 240V 50 60Hz ive on ag For domi ie Y Ring CLX 52 Power ue WARNING See Operating Manuel ce CAUTION f pela 006 of 0 35A 30W 1 Inputs and Outputs Your CLX 2 Detector Loop Ducking The CLX Compressor Limiter is provided with three Compressor Limiters have a TRS Insert different connector types 1 4 TRS tip ring DETECTOR PATCH point which can be used sleeve jacks XLR connectors and Euroblocks as a ducking input or in conjunction with an Inputs are 20KQ active balanced using 1 equalizer to produce frequency sensitive metal film resistors outputs are 132Q servo limiting Various uses of the detector patch are balanced discussed under Typical Applications 3 Power Switches the unit power on or off Installation Use four screws an
9. for long periods of time 15 Refer all servicing to qualified service personnel Servicing is required when the apparatus has been damaged in any way such as power supply cord or plug is damaged liquid has been spilled or objects have fallen into the apparatus the apparatus has been exposed to rain or moisture does not operate normally or has been dropped ds co hacc Dog Le symbole de la fl che dans un triangle quilateral symbolisant la foudre est pr vu pour sensibiliser l utilisateur la pr sence de tension de voltage non isol e l int rieur de l appareil Elle pourrait constituer un danger de risque de d charge lectrique pour les utilisateurs Le point d exclamation dans le triangle quilat rale alerte l utilisateur de la pr sence de consignes qu il doit d abord consulter avant d utiliser l appareil Lisez ces instructions Conservez ces instructions Observez les avertissements Suivez ces instructions Pour r duire le risque de feu ou la d charge lectrique ne pas exposer cet appareil pour pleuvoir ou l humidit Ne pas utiliser l appareil pr s de l eau Le nettoyer l aide d un tissus sec 8 Ne pas bloquer les ouvertures de ventilation installer selon les consignes du fabricant 9 Eloigner des sources de chaleur tel radiateurs fourneaux ou autres appareils qui produisent de la chaleur 10 Ne pas modifier ou amputer le syst me de la mise terre Une prise avec mise terre co
10. gized All Rights Reserved Page 8 Operator Manual CLX 52 Compressor Limiter Safety Instructions 3 Introduction 4 CLX 52 5 Connectors amp Cables 5 Physical Description 6 Installation 7 Typical Applications 8 Protective Device Recording De Essing Instrument Texture Ducking Stereo Operation Troubleshooting 9 Dimensions 9 Specifications 10 Warranty 11 Typical Applications The applications of the Ashly CLX 52 can be divided into two basic categories limiting and compressing When used as a protective device it is functioning as a Limiter It may also be used to reduce the dynamic range of a signal creating a fuller sounding signal without increasing the loudness peaks in which case it is functioning as a compressor The CLX 52 As A Protective Device The CLX 52 provides fast and accurate gain control for the prevention of sound system overload due to unexpected transients Sustained distortion caused by amplifiers running out of power or occasional one shot high level overload a microphone falling onto a hardwood floor can damage speakers and other system components The CLX 52 can be installed in several locations in a sound system to achieve specific goals CLX 52 Signal Path Location Effect After the mixer and before the Compression and Limiting acts on the entire signal preventing crossover and amplifier crossover and amplifier s overload and maximizing t
11. he dynamic performance of both After an active crossover and Compression and Limiting acts on each segment of the signal to which a CLX 25 before the amplifier s channel is connected coming from the crossover allowing for different settings in each segment After a parametric EQ and This setup is typically used to control feedback By using the parametric EQ as a multi before the amplifier s point notch filter on the feedback frequencies and the CLX 52 to limit those frequencies an accurate and automatic feedback control can be imposed on a system Recording The CLX 52 limiter can be used to prevent input overload clipping distortion in a live recording environment To prevent distortion while preserving dynamic range set the CLX 52 as follows Gain 0 Threshold 2 3 dB below recorder input max Ratio 10 Attack 2 mS Release 2 Sec Output 0 Every situation is different so experimentation before final recording is always a good idea De Essing A special type of saturation problem often encountered in recording is the sibilant Ssss sound of the human voice The solution is frequency dependent limiting which is easily accomplished with the CLX unit By inserting an equalizer into the Detector Patch point and boosting the equalizer at high frequencies in the vicinity of the sibilant the limiter s detector circuit becomes more sensitive to this particular range of frequencies and so will limit the bothersome sibilants mo
12. lutions are to Sections Of The Program either decrease noise at the program source or use less compression Note Unshielded cables improperly wired connections and cable with broken strands shorts etc are the most common problems Make sure you use good quality cable with connectors soldered firmly on the correct pin When in doubt get in touch with your Ashly dealer Dimensions In inches zn o ENS E BERR lernte ae 36466666655 000068 Je 84666856683 88883669585 N N SO ET ES COLES DEDRDEDRORODT MS OoOo UC dus va zi Oo can Threshold Ratio Output Level in Stereo Tie Goin Threshold Ahok Rolease Output Level in 99 All Rights Reserved Page 10 Operator Manual CLX 52 Compressor Limiter Specifications Gain 15dB Attack Time 200 uS 20 mS Output o to 18 dB Maximum Output Level 23 dBu Output Impedance 132Q servo balanced lt 01 THD OdBu 1KHz Distortion 0 1596 THD 15dBu 20Hz 20KHz Power Requirements 100 240 Volts 50 60 Hz 30 watts Dimensions 19 Lx1 75 Hx8 D Copyright 2006 Ashly Audio Inc Operator Manual CLX 52 Compressor Limiter Page 11 Limited Warranty Warranty service for this unit will be provided by ASHLY AUDIO INC in accordance with the following warrant statement ASHLY AUDIO INC warrants to the owner of this product that this product a
13. mprend deux lames dont une plus large ainsi qu une mise terre ne pas la couper ou la modifier Si la prise murale n accepte pas la fiche consulter un lectricien pour qu il remplace la prise d su te 11 Prot ger le cordon de secteur contre tous bris ou pincement qui pourraient l endommager soit la fiche murale ou l appareil 12 N employer que les accessoires recommand s par le fabricant 13 N utiliser qu avec les syst mes de fixation chariots tr pied ou autres approuv s par le fabricant ou vendus avec l appareil 14 D brancher l appareil lors des orages lectriques ou si inutilis pendant une longue p riode de temps 15 Un entretient effectu par un centre de service accr dit est exig si l appareil a t endommag de quelque fa on si il a t expos la pluie l humidit ou s il ne fonctionne pas normalement ou qu il a t chapp Or Oo plo All Rights Reserved Safety Instructions 3 Introduction 4 CLX 52 5 Connectors amp Cables 5 Physical Description 6 Installation 7 Typical Applications 8 Troubleshooting 9 Dimensions 9 Specifications 10 Warranty 11 This manual uses a Perpetual Table Of Contents Each page has a copy of the manual s contents in a gray box just like this one The section you are in will always be bold with the other sections grayed out The feature allows you to jump directly to another section without having
14. n on a stereo signal with no degradation of the stereo image When pressed in the Stereo Tie Switch combines each channel s internal detector outputs so that the channel with the loudest signal will determine the action applied to both channels Leave this Switch out for normal operation Threshold Gain Reduction Display As soon as the threshold level is reached the yellow LED illuminates Depending on how far the input level rises above threshold successive red LED s will illuminate indicating gain reduction Gain Reduction can best be described as the difference between input level and the resulting change to output level For signals above threshold output level will increase only to the extent that the ratio control allows Input Output Meter Select While the Gain Reduction display accurately represents the action of the limiter comparing input to output levels in real time is somewhat more intuitive and is made simple using the Input Output Meter Select switch The Input meter takes its signal just after the Gain control and will indicate input signal level regardless of CLX output levels or limiter settings The output meter display takes its signal from the actual output of the unit so every control that affects the output will also have an effect on output meters Used in conjunction with the gain reduction meters Input Output meters prove to be an extremely useful diagnostic tool when working with system dynamics and l
15. nd the components thereof will be free from defects in workmanship and materials for a period of FIVE years from the date of purchase ASHLY AUDIO INC ASHLY AUDIO will without charge repair or replace at its option defective product or component parts upon prepaid delivery to the factory service department or authorized service center accompanied by proof of purchase date in the form of a valid sales receipt This warranty gives you specific legal rights and you may also have other rights which vary from state to state EXCLUSIONS This warranty does not apply in the event of misuse neglect or as a result of unauthorized alterations or repairs This warranty is void if the serial number is altered defaced or removed ASHLY AUDIO reserves the right to make changes in design or make additions to or improvements upon this product without any obligation to install the same on products previously manufactured Any implied warranties which may arise under the operation of State law shall be effective only for FIVE years from the date of purchase of the product Ashly Audio shall be liable only to correct defects in the product itself and not for any damage or injury which may result from or be incidental to or a consequence of such defect Some states do not allow either limitations on how long an implied warranty lasts or the exclusion or limitation of incidental or consequential damages so the above limitations or exclusions may not apply to y
16. ou Obtaining Warranty Service in the United States For warranty service in the United States please follow this procedure Return the product to Ashly freight prepaid with a written statement describing the defect and application the product is used in Ashly Audio will examine the product and perform any necessary service including replacement of defective parts at no further cost to you Ship your product to Ashly Audio Inc Attn Service Department 847 Holt Road Webster NY 14580 9103 For units purchased outside The United States of America service will be provided by an authorized distributor of ASHLY AUDIO INC Obtaining Warranty Service Outside the United States For units purchased outside The United States of America service will be provided by an authorized distributor of ASHLY AUDIO INC All Rights Reserved Rens Reduction dB Channel 1 es Level dB Clip Gain Reduction dB Channel 2 Input Output Level dB Clip Co 2 4 6 8 10 12 M 16 10 20 5 329 6 3 0 43 16 49 420 2 6 8 10 12 M 16 18 20 129 6 0 0 6 9920 55669655556 50505559555 O 55669655555 0000000 OO 5 H A o m 3 a at d E Output ASHLY 1 d 52 E 10 Fo RD 10 Compressor Limiter Se 30 415 a 2m se 22 15 ne ep pesti OO a aa s ab ae in Pao des Oe 2 Power Goin Threshold Ratio Attack Output Level
17. re than other frequencies Altering Instrument Texture Compressoion can be used to help bring out a lead vocal or instrumental solo in a cluttered mix The compressor is also a great corrective tool when working with singers whose own dynamic control is less than perfect Experimentation is highly recommended Voice Over Compression Ducking The CLX 52 can be used to reduce music to a background level when an announcer is speaking The detector is connected to respond only to an announcer s voice Stereo Operation On the CLX 52 pressing the Stereo Tie switch combines the detector outputs so that the loudest channel controls the limiter action of the other channel This allows true stereo imaging to be preserved regardless of which channel is in gain reduction Copyright 2006 Ashly Audio Inc Operator Manual CLX 52 Compressor Limiter Page 9 Troubleshooting No Audio Output Check AC Power Is the power switch on Check input and output connections are they reversed Are you sure you have an input signal When Using Heavy Quiet program material is effectively made louder while loud peaks are made quieter When Compression the program source is thus raised in volume its noise floor is also raised in volume by a Background Noise Is proportionate amount This is not a defect in the Compressor Limiter but an unavoidable Noticeable During Quiet side effect of the gain altering process If the noise becomes a problem the so
18. t above threshold required to produce a 1db increase in output This can be expressed conveniently as a ratio If the output remains constant no matter how high the input level we have an infinite input output ratio It should be remembered that the Ratio control has no effect on signals which are below threshold 4 Attack Time The response of the Dimensions 9 Specifications 10 Warranty 11 compressor limiter to signal levels above 10 threshold is further defined by the Attack Time control Attack time is the amount of time that the unit takes to attenuate the output level after threshold has been reached This unit provides continuously variable attack times from 200 microseconds to 20 milliseconds 5 Release Time Release time is the time required to restore system gain to normal after the input signal has fallen below threshold level Proper release time will depend on the type of program material being processed and the way in which the limiter is being used 6 Output Level Output Level control is provided to fully cut or restore up to 18 dB of system gain For unity gain set the control to 0 quickly hear the CLX compressor limiter in or out of the audio chain When the switch is in the OUT position all limiting and compression controls and functions are bypassed with the exception of the Gain and Output controls which continue to function Stereo Tie Switch This switch allows for Gain Reductio
19. tions in the literature accompanying the device Read these instructions Keep these instructions Heed all warnings Follow all instructions To reduce the risk of fire or electric shock do not expose this apparatus to rain or moisture Do not use this apparatus near water Clean only with dry cloth 8 Do not block any ventilation openings Install in accordance with the manufacturer s instructions 9 Do notinstall near any heat sources such as radiators heat registers stoves or other apparatus including amplifiers that produce heat 10 Do not defeat the safety purpose of the polarized or grounding type plug A polarized plug has two blades with one wider than the other A grounding type plug has two blades and a third grounding prong The wide blade or the third prong are provided for your safety If the provided plug does not fit into your outlet consult an electrician for replacement of the obsolete outlet 11 Protect the power cord from being walked on or pinched particularly at plugs convenience receptacles and the point where they exit from the apparatus 12 Only use attachments accessories specified by the manufacturer 13 Use only with the cart stand tripod bracket or table specified by the manufacturer or sold with the apparatus When a cart is used use caution when moving the cart apparatus combination to avoid injury from tip over 14 Unplug this apparatus during lightning storms or when unused
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