User`s Manual
Contents
1. User s Manual Compactor Zener compressor limiter up OUTPUT 2 CHAIN RELEASE pM 7 Gem Audio Labs Tel 00 48 508 377 982 office gemaudiolabs com www gemaudiolabs com Rev 2 Date 03 07 2012 Page 1 14 C 3 CE Conformity We declare with sole responsibility that this product complies with the following norms and directives 2006 95 EC LVD Low Voltage Directive 2004 108 EC EMC Electromagnetic Compatibility e DIN EN 55103 1 EMC of audio equipment Emission e DIN EN 551032 EMC of audio equipment Immunity This declaration becomes invalid by any unapproved modification of the device Wroclaw 02 06 2011 B Radziszewski SPLASH BARTOSZ RADZISZEWSKI Wietrzna 36 1 53 024 Wroclaw POLAND VAT Reg Nr PL8862784446 Rev 2 Date 03 07 2012 Page 2 14 TABLE OF CONTENTS INTRODUCTION ioc tq NE 4 SAFE OPERATION scscpssicceiedtenenssestesetavadesiessecstancadedsevssevsanwasnad shvedvwadauiedcevavsdsutsnwsascnasnedsesGustedassoce 4 AITO 5 CORRECT OPERATION 6 BI He CE 6 THE FRONT PANEL CONTROLS AND THEIR 5 7 ME REAR PANE eR 10 BEOCK DIAGRAM mc Em 11 TECHNICAL DATA cn m 12 ENVIRONMENTAL PROTECTION 13 LIMITED WARRANTY dU nba Deva atn 14 Rev 2 Date 03 07 2012 Page 3 14 INTRODUCTIO2. the PRODUCER hereafter selling products under Gem Audio Labs trade mark will only give warranty on products purchased through authorized dealers or directly from the producer PLEASE RETAIN YOUR SALES RECEIPT IT I5 YOUR PROOF OF PURCHASE COVERING YOUR LIMITED WARRANTY THIS LIMITED WARRANTY IS VOID WITHOUT SUCH PROOF OF PURCHASE e This limited warranty does not cover the product if it has been electronically or mechanically modified in any way e This limited warranty is invalid if the factory applied serial number has been altered or removed from the product e Natural wear is not covered by this warranty e Damage defects caused by the following conditions are not covered by this limited warranty improper handling neglect or failure to operate the unit in compliance with the instructions given by the PRODUCER s user manual connection or operation of the unit in any way that does not comply with the technical or safety regulations applicable in the country where the product is used damage defects caused by acts of God Nature accident fire flood etc or any other condition that is beyond the control of the PRODUCER e Warranty will not apply because of incorrect storage dropping excessive shocks corrosions dirt water or sand damages e confirm your warranty please register your Gem Audio Labs product shortly after purchase Please fill out your user registration card included in the original packaging and send it via e ma
3. N First of all we would like to thank You sincerely for choosing this GEM AUDIO LABS Compactor which combines ease of operation with support for multiple usage environments As a company and first of all as fans of pro audio devices we do our best in our daily work to satisfy your most sophisticated sound expectations We put in your hands the highest quality product precisely designed and hand manufactured by our qualified staff without any compromise To build our devices we use only the best hand selected electronic components we take care about all parameters repeatability and high quality of all our products Please take a little time to read this manual thoroughly as it will help You to entirely understand how the works and what is important to use it safely Gem Audio Labs team CAUTION CAUTION WARNING PREVENT ELECTRIC SHOCK RISK OF ELECTRIC SHOCK A TO REDUCE THE RISK OF FIRE OR DO NOT REMOVE TOP COVER NO USER DO NOT OPEN ELECTRIC SHOCK DO NOT EXPOSE SERVICABLE PARTS INSIDE REFER THIS EQUIPMENT TO RAIN OR SERVICING TO QUALIFIED SERVICE AVIS RISQUE DE CHOC ELECTRIQUE MOISTURE PERSONEL NE PAS OUVRIR DANGEROUS VOLTAGE IT IS NECESSARY FOR THE USER TO REFER TO THE INSTRUCTION MANUAL VOLTAJE PELIGROSO A ES NECESARIO QUE EL USUARIO SE REFIERA AL MANUAL DE INSTRUCCIONES DANGER HAUTE TENSION REFERREZ VOUS AU MANUAL D UTILISATION INSTALLATION e Before You connect the power cord to t
4. anel The device is connected to the line by a standard 3 core cord with an IEC plug There are two safety fuses located in the mains input socket on the rear panel 500mA slo blo 5x20mm for 230V 50 Hz e slo blo 5x20mm for 115V 60 Hz On the primary side of the transformer a special EMI filter is installed It filters out any interferences that may enter the device from the electric network We have designed a special filtering stage with high capacity capacitors and special active filters based on discrete elements eliminating noise and ripple Power of all stages is symmetrical and every section has its own stabilization which keeps the voltage range of 0 01V the voltage stabilizers are mounted to a common heat sink which cools them evenly Furthermore the heat sink acts as an additional shield Operational voltages First gain stage 20V Sidechain 20V Blender 18V Make up gain stage 28V Lights and relays 12V ROTARY AND TOGGLE SWITCHES Compactor has only rotary and toggle switches installed to achieve the best repeatability of all settings Thus you can easily return to your favorite settings By using 1 low noise metalized resistors and gold contact rotary switches we succeeded to achieve in the link mode the difference between levels and characteristics of two channels in a range of 0 1 dB SIGNAL PATH AND SIDECHAIN SECTION Compactor has its inputs and outputs ele
5. ctronically balanced elements in the signal path and the sidechain section are built from the high quality components low noise transistors ultra low impedance electrolytic capacitors precision film capacitors precision silver mica capacitors 176 low noise metalized resistors etc The gain reduction is made by a discrete VCA based on bipolar transistors and Zener diodes There are 16 Zener diodes of course manually selected and matched Rev 2 Date 03 07 2012 Page 7 14 THE FRONT PANEL CONTROLS AND USE n POWER Common POWER on off switch The amber light and panel meters will glow when the unit is powered on Please turn down the volume of your studio monitors before turning on or turning off the Compactor BYPASS IN The bypass is a hard relay bypass If the unit loses power it will default to this hard relay bypass BYPASS hard bypass is activated panel meter is highlighted in orange IN the signal is going through the unit panel meter is highlighted in yellow INPUT 11 position gold contact audio taper switch set for 5dB 10dB of input gain control in 5 4 3 2 1 0 2 4 6 8 10dB steps It determines the level of the signal entering the channel as well as the threshold D OUTPUT 11 position gold contact switch set for 10dB 10dB of gain control in 2dB steps Once the desired amount of limiting or compression is achieved with the use of the INPUT control the OUTPUT control can be
6. he Compactor act as a single stereo compressor with equal gain reduction on both sides even when there is transient activity only on one channel You only need to set all the functions on the left and right channel in the same position It is not a problem having only rotary and toggle switches installed in the unit In the down DUAL position the Compactor operates as two separate compressors with the two channels operating completely independently of one another It is recommended to use the device in the LINK mode in the case of processing stereo signals Rev 2 Date 03 07 2012 Page 9 14 THE REAR PANEL Im VOLTAGE SWITCH Make sure that the voltage switch setting reflects the correct local power line voltage For line voltages from 100V to 120V set the switch to 115V The 230V position is good for all line voltages from 200 240Volts bi MAINS INPUT AC FUSES HOLDER The mains AC connector is a standard IEC type 3 pin connector with a AC fuses 2 pieces holder The ground of this AC connector is permanently internally connected to the chassis of the Compactor for safety It is important to change the fuse before changing the supply voltage e 500mA slo blo 5x20mm for 230V 50 Hz e slo blo 5x20mm for 115V 60 Hz INPUT Balanced input XLR wired according to the AES standard Pin 1 shield Pin 2 hot Pin 3 cold In order to avoid hum it is recommended to use the device on
7. he device please check fuses value and make sure that the voltage switch setting reflects the correct local power line voltage For line voltages from 100V to 120V set the switch to 115V and use 1A fuses slo blo 5x20mm The 230V position is good for all line voltages from 200 240Volts fuses 500mA slo blo 5x20mm e This unit is equipped with a three pronged AC power cord To reduce the risk of electrical shock never remove or otherwise attempt to defeat the ground pin of the power cord Do not allow water to enter this unit or allow the unit to become wet Fire or electrical shock may result e Do not place a container with liquid or small metal objects on top of this unit Liquid or metal objects inside this unit are a fire and electrical shock hazard e Do not place heavy objects including this unit on top of the power cord A damaged power cord is a fire and electrical shock hazard Rev 2 Date 03 07 2012 Page 4 14 OPERATION Do not scratch bend twist pull or heat the power cord A damaged power cord is a fire and electrical shock hazard Do not remove the unit s cover You could receive an electrical shock If you think internal inspection maintenance or repair is necessary contact your dealer or producer Do not modify the unit Doing so is a fire and electrical shock hazard If lightning begins to occur turn off the power switch of the unit as soon as possible and unplug the power plug from the electrical
8. il to office gemaudiolabs com or via mail to SPLASH BARTOSZ RADZISZEWSKI Wietrzna 36 1 53 024 Poland e returns must be in the original packaging accompanied by the return authorization Please fill out your return authorization form included in the original packaging and send it to your local distributor from whom You purchased the unit If the unit has been purchased directly from producer please send the return authorization form via e mail to office gemaudiolabs com or via mail to SPLASH BARTOSZ RADZISZEWSKI Wietrzna 36 1 53 024 Poland e All returns must be shipped via insured freight at the customer s own expense e Incase when a product must be returned to the factory from a country outside Poland the customer shall adhere to specific shipping customs and commercial invoicing Instructions given with the return authorization as the PRODUCER will not be responsible for transportation costs or customs fees related to any importation or re exportation charges whatsoever e After repair a product will be returned to the customer via prepaid insured freight method and carrier to be determined by the PRODUCER e All damages caused by transport are not covered by this warranty Contact data For the warranty confirmation technical support and return authorizations please contact SPLASH BARTOSZ RADZISZEWSKI Wietrzna 36 1 53 024 Wroclaw Poland office gemaudiolabs com Rev 2 Date 03 07 2012 Page 14 14
9. ly in balanced connections f Balanced output XLR wired according to the AES standard Pin 1 shield Pin 2 hot Pin 3 cold In order to avoid hum it is recommended to use the device only in balanced connections Rev 2 Date 03 07 2012 Page 10 14 BLOCK DIAGRAM LEFT CHANNEL INPUT INPUT OUTPUT OUTPUT lt XLR LEVEL LEVEL XLR BYPASS n BALL e HARD SOFT ki HPF COMP LIMIT DUAL 24 e STEREO LINK SWITCH RIGHT CHANNEL INPUT INPUT OUTPUT OUTPUT XLR LEVEL LEVEL XLR BYPASS me ADJ BALL nd 4 SOFT 2 n m Date 03 07 2012 Page 11 14 TECHNICAL DATA e Inputs Electronically balanced XLR e Outputs Electronically balanced XLR Bypass hard relay bypass Input impedance 48kQ e Output impedance lt 500 e Frequency response 20 22 000Hz e Maximum input level 21 dBu sensitivity 4 dBu e Maximum output level 23 dBu e S N ratio A weighted better than 85dBu e Meter 0 to 20dB gain reduction e Signal path Class A discrete bipolar transistors biased by Zener diodes e Dynamic modes limiter compressor e Action modes hard soft e Attack 0 5ms 118 2ms 3ms 5ms 8ms 12ms 30ms e Release 50ms 70ms 100ms 150
10. ms 250ms 500ms 1sec 2 e Sidechain filtering HPF OFF 80 Hz 200 Hz 320 Hz e PSU internal e Fuses type 230V 500mA slo blo 5x20mm 115V 1A slo blo 5x20mm Power consumption 60W e Dimensions WxHxD 483x88mm 2U x 245mm Weight 48kg Subject to change without notice Rev 2 Date 03 07 2012 Page 12 14 ENVIRONMENTAL PROTECTION At the end of its operating life this product must not be disposed of with regular household waste but must be returned to a collection point for the recycling of electrical and electronic equipment The wheelie bin symbol on the product and user s manual indicates that The materials can be re used in accordance with their markings Through re use recycling of raw materials or other forms of recycling of old products you are making an important contribution to the protection of our environment Your local administrative office can advise you of the responsible waste disposal point x Our devices are packaged in environmentally friendly packaging that can be reprocessed Remember about waste segregation Rev 2 Date 03 07 2012 Page 13 14 LIMITED WARRANTY Should you need to use our warranty service on this product we refer you to the terms and conditions stipulated below e This warranty is valid for one year from the date of purchase by the consumer and is not transferable SPLASH BARTOSZ RADZISZEWSKI Wietrzna 36 1 53 024 Wroclaw POLAND called
11. or dust accumulation Hold the power plug when disconnecting it from an AC outlet Never pull the cord A damaged power cord is a potential fire and electrical shock hazard Do not touch the power plug with wet hands Doing so is a potential electrical shock hazard Rev 2 Date 03 07 2012 Page 5 14 e To relocate unit turn power switch off remove power plug from AC outlet and remove all connecting cables Damaged cables may cause fire or electrical shock OPERATION Do not cover this unit and use it only in a well ventilated environment e If you know you will not use this unit for a log period of time such as when going on vacation remove the power plug from the AC outlet Leaving it connected is a potential fire hazard FOR CORRECT OPERATION CONNECTOR PIN ASSIGNMENTS XLR connectors INPUT OUTPUT are wired according to the AES standard Pin 1 shield Pin 2 hot Pin 3 cold INFLUENCE ON CELL PHONE USAGE Using a cell phone mobile telephone near this unit may induce noise If noise occurs use the telephone away from the unit REPLACING ABRASIVE PARTS AND CLEANING THE UNIT The performance of components with moving contacts such as toggle switches rotary switches and connectors deteriorates over time The rate of deterioration depends on the operating environment and is unavoidable Consult your dealer or producer about replacing defective components Clean this unit only wi
12. outlet If there is a possibility of lightning do not touch the power plug if it is still connected Doing so may be an electrical shock hazard Use only the included AC power cord for this unit Using other types may be a fire and electrical shock hazard IN CASE AN ABNORMALITY OCCURS DURING OPERATION If the power cord is damaged i e cut or a bare wire is exposed ask your dealer or producer for a replacement Using the unit with a damaged power cord is a fire and electrical shock hazard Should this unit and AC cord be dropped or the cabinet be damaged turn the power switch off remove the power plug from the AC outlet and contact your dealer or producer If you continue using the unit without heeding this instruction fire or electrical shock may result If you notice any abnormality such as smoke odor or noise or if a foreign object or liquid gets inside the unit turn it off immediately Remove the power plug from the AC outlet Consult your dealer or producer for repair Using the unit in this condition is a fire and electrical shock hazard CAUTION INSTALLATION Keep this unit away from the following locations Locations exposed to oil splashes or steam such as near cooking stoves humidifiers etc Unstable surfaces such as a wobbly table or slope Locations exposed to excessive heat such as inside a car with all the windows closed or places that receive direct sunlight Locations subject to excessive humidity
13. th lint free damp cloth and do not use cleaning agents DESIGN The GEM AUDIO LABS Compactor is a two channel stereo dual mono pure analog Class A discrete dynamic processor in which the gain reduction is made by a discrete VCA based on bipolar transistors and Zener diodes ENCLOSURE Compactor s enclosure is a solid 2U high and compact construction based on aluminum and steel It has been designed according to EIA 19 standard For enclosure painting the best coating powders have been used scratches and cracks resistant POWER SUPPLY SECTION Special care has gone into the design of the power supply of the Compactor because the power supply is the heart of any electronic system and the better it is the better the whole system works In an audio system this translates into a better sound quality lower noise and unwanted distortion elimination Compactorsr s power supply is based on a 60VA toroidal transformer which is made on our special order from properly selected cores It is Rev 2 Date 03 07 2012 Page 6 14 characterized by highest quality good supply of power silent operation and excellent electrical parameters It has the core and windings impregnation electrical shielding between windings and magnetic external screen its center is flooded with resin The transformer has an anti vibration mount Primary voltage can be switched between 230V 50 Hz and 115V 60 Hz via the switch located on the rear p
14. used to make up any gain lost due to gain reduction 5 This switch allows You to choose between two unique modes Each of them provides different combination of threshold and compression knee SOFT is less pumping mode and it is useful when a complex material is processed for example during mastering tasks HARD mode allows for more pumping and it is ideal for tracking when sometimes aggressive compression is needed Your mode choice will depend on the processed signal and the aural effect you want to achieve Rev 2 Date 03 07 2012 Page 8 14 In the COMP position operates as a compressor with 2 1 compression ratio In the limit mode its behavior can be compared to the famous Fairchild 660 limiter S CHAIN HPF With this control 4 position gold contact switch you can remove low frequency information in the sidechain circuit from 80Hz 200Hz 320Hz It can be also turned off by setting OFF position ATTACK The ATTACK control 8 position gold contact switch determines how fast the compressor reacts It can set for 0 5ms 1ms 2ms 3ms 5ms 8ms 12ms 30ms I RELEASE The RELEASE control 8 position gold contact switch determines the time the compressor needs to get back to the initial value after a level reduction It can be set for 50ms 70ms 100ms 150ms 250ms 500ms 1sec 2sec LINK DUAL MONO When set to the up LINK position the two channels of t
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