528E Quick Start.indd
Contents
1. 10k Ohms so it would be expecting a level of 0 100 volts RMS Knowing this one can build an L pad attenuator with a 3600 Ohm series resistor followed by an 820 Ohm resistor to ground This will give approximately 15 58 dB of attenuation thus providing a suitable level to the HAM radio transceiver input I O Impedances The 528E is designed to interface into almost any recording studio or sound reinforcement application This includes e 600 Ohm systems where input and output impedances are matched e Unbalanced semi professional equipment applications e Modern bridging systems where inputs bridge and outputs are low source impedances voltage transmission systems The 528E s microphone input is intended to bridge a 150 Ohm balanced source The actual input impedance is approximately 8k Ohms 48V phantom powering for condenser microphones is present if the PHANTOM POWER switch has been depressed The 528E s line input impedance is 10k Ohms balanced and 10k Ohms unbalanced The inputs may be driven from any source balanced or unbalanced capable of delivering at least 10 dBu into the aforementioned impedances The 528E s output impedance is 200 Ohms balanced 100 Ohms unbalanced The output line driver delivers 18 dBm into a 600 Ohm balanced load or 18 dBm into 600 Ohm unbalanced loads I O Impedances The 528E uses the international standard polarity convention of pin 2 hot Therefore XLR ___ Tip Ring Sleeve Signal 1 Sleeve2. 528E Be sure to set the Mic Line switch to the appropriate position and be sure to turn on phantom power if using a microphone that requires it Next connect the appropriate output of the 528E to your monitoring system or mixing console Finally connect the 528E to an AC source of the proper voltage and frequency as marked on the rear of the unit Settings Set the controls and switches on the front of the 528E per the following table Front Panel Control MIC LINE 15 PAD MIC GAIN DE ESS FREQUENCY DE ESS THRESHOLD DE ESS IN OUT DOWNWARD EXPANDER EXP THRES COMPRESSOR COMP THRES COMPRESSOR COMP RATIO EXP COMP IN OUT VOICE SYMMETRY IN OUT Setting As required Out 12 o clock 3K 12 o clock 0 Full CW Out BYPASS Full CCW 20 Full CW 2 12 o clock Out Out Front Panel Control LOW EQ FREQUENCY LOW EQ BANDWIDTH LOW EQ CUT BOOST MID EQ FREQUENCY MID EQ BANDWIDTH MID EQ CUT BOOST HIGH EQ FREQUENCY HIGH EQ BANDWIDTH HIGH EQ CUT BOOST EQ IN OUT GAIN Setting 160 Hz 12 o clock 1 5 octaves 12 o clock 0 12 o clock 2 5K 12 o clock 1 5 octaves 12 o clock 0 12 o clock 6 8K 12 o clock 1 5 octaves 12 o clock 0 12 o clock Out 0 12 o clock You can now power on the 528E and it should pass signal The OUTPUT LEVEL LED display should show some activity and the POWER LED should be illuminated We can now move on to fine tuning your settings Symetrix Quick Start Gu
3. AL i 7 J As A Channel Insert Device In this situation you are using the 528E as a line signal processor utilizing the 528E s de esser expander compressor and equalizer while using your console s input and output stages MANUFACTURED IN THE USA BY BALANCED OUTPUT A gt TEEKI IIS UNIT CONTAINS NO OUTPUT STAGE EQUALIZER EXPANDER COMPRESSOR DE ESS UNBALANCED USER SERVICEABLE PARTS OUTPUT INPUT INPUT OUTPUT SIDECHAIN INPUT OUTPUT INPUT oe A A L A al FN D N A ZJ Q Q WZ Ww Q O g WY G Z res aav POWER bre Booms FRONTPANEL INPUT SELECT SWITCH IN LINE OUT POSITION ss L p s eh a Se lt TO CHANNEL PATCH ae a Pa FROM CHANNEL RETURN INPUT Doos PATCH SEND OUTPUT Symetrix To download the full 528E User Guide go to the Quick Start Guide 528E Voice Processor 528E product page on www symetrixaudio com Using The Patch Points 8 Inserting Additional Processing i UN This illustration shows an external processor inserted between ourpurstace EQUALIZER EXPANDER COMPRESSOR DEESS ae 7 the 528E s equalizer and its output stage To insert additional J os A pad A oy gt ae a external processing into the 528E s signal path j J X Zs Or Q 2 gt 1 Dec
4. Ground 2 Tip High 3 Ring Low If your system uses balanced inputs and outputs and uses the 528E this way then the polarity convention is unimportant If your system is both balanced and unbalanced then you must pay attention to this especially when going in and coming out through different connector types like input on an XLR output on a phone jack Further Information Much more information including an online tutorial customer submitted settings frequently asked questions and trouble shoot ing information as well as the complete user s guide can be found on the Symetrix web site at http www symetrixaudio com Symetrix Quick Start Guide To download the full 528E User Guide go to the 528E Voice Processor 528E product page on www symetrixaudio com Output Level Switch 10 WARNING Lethal voltages are present inside the chassis Perform all service work with the unit disconnected from all AC power CAUTION These servicing instructions are for use by qualified personnel only To avoid electric shock do not perform any servicing other than that contained in the operating instructions portion of this manual unless you are qualified to do so Refer all servicing to qualified service personnel Tools Required 1 2 Phillips head screwdriver Top Cover Removal 1 Ensure that the 528E is disconnected from the AC power source 2 Remove two 6 32 x 1 2 inch screws from the top panel and two 6 32 x 1 2 inch screws from each side o
5. Symetrix product is designed and manufactured for use in professional and studio audio systems and is not intended for other usage With respect to products purchased by consumers for personal family or household use Symetrix expressly disclaims all implied warranties including but not limited to warranties of merchantability and fitness for a par ticular purpose This limited warranty with all terms conditions and disclaimers set forth herein shall extend to the original purchaser and anyone who purchases the product within the specified warranty period Symetrix does not authorize any third party including any dealer or sales representative to assume any liability or make any additional warranties or representation regarding this product information on behalf of Symetrix This limited warranty gives the buyer certain rights You may have additional rights provided by applicable law NOTE Some Symetrix products contain embedded software and may also be accompanied by control software intended to be run on a personal computer Said software is specifically excluded from this warranty Limitation of Liability The total liability of Symetrix on any claim whether in contract tort including negligence or otherwise arising out of connected with or resulting from the manufacture sale delivery resale repair replacement or use of any product will not exceed the price allocatable to the product or any part thereof which gives rise to t
6. s output over a 15 dB range NOTE The actual adjustment point is in the expander compressor s VCA which is pre EQ VOICE Inserts speech waveform asymmetry correction into the signal path SYMMETRY OUTPUT LED Indicates the peak output level of the 528E relative to the balanced output The 0 VU LED on the display corresponds to 4 dBu at the balanced output For unbalanced applications the actual output level is 6 dB lower than that shown by the display NOTE If the internal mic level output switch has been depressed the output level is 40 dBu when the display indicates 0 VU POWER LED Indicates the presence of AC power Rear Panel r Powe r p MAXIMUM MANUFACT RED N THE USA BY BALANCED OUTPUT AC INPUT IEC power connector Connect S SE only to appropriate AC power t Jo BREUS OUTPUT STAGE EQUALIZER UNBALANCED OUTPUT INPUT 20 OUTPUT INPUT source Refer to rear panel m C rower O O marking for correct AC source et A meen voltage POWERTunrns the 528E on and off SWITCH SERIAL Please note the serial number NUMBER for future reference Should your 528E ever require service Symetrix Customer Service will need this information in order to process your repair request Symetrix Quick Start Guide To download the full 528E User Guide go to the 528E Voice Processor 528E product page on www symetrixaudio com Rear Panel cont 4 Output Stage I O L
7. warranty will be limited to repair ing or replacing at Symetrix s option the part or parts of the product which prove defective in material or workmanship within eighteen 18 months from the date the product is shipped from the factory provided that the Buyer gives Symetrix prompt notice of any defect or failure and satisfactory proof thereof Products may be returned by Buyer only after a Return Authorization number RA has been obtained from Symetrix Buyer will prepay all freight charges to return the product to the Symetrix factory Symetrix reserves the right to inspect any products which may be the subject of any warranty claim before repair or replacement is carried out Symetrix may at its option require proof of the original date of purchase dated copy of original retail dealer s invoice Final determination of warranty coverage lies solely with Symetrix Products repaired under warranty will be returned freight prepaid via United Parcel Service by Symetrix to any location within the Continental United States Outside the Continen tal United States products will be returned freight collect The foregoing warranties are in lieu of all other warranties whether oral written express implied or statutory Symetrix Inc expressly disclaims any IMPLIED warranties including fitness for a particular purpose or mer chantability Symetrix s warranty obligation and buyer s remedies hereunder are SOLELY and exclusively as stated herein This
8. INE INPUT A oe BALANCED XLR male connector Balanced line level output This output may EXPANDER COMPRESSOR DEES pie AM S OUTPUT be converted to a mic level output See Output Level Switch a a a i on page 10 Q NS UNBALANCED TRS phone jack wired for unbalanced operation Provides a line OUTPUT level unbalanced output This jack is unaffected by the Mic Level Output Configuration switch mentioned above OUTPUT TRS phone jack wired for unbalanced operation This is the STAGE INPUT input to the output stage Inserting a connector into this jack will interrupt any signal coming from previous upstream modules of the 528E Equalizer I O nace N OUTPUT TRS phone jack wired unbalanced This is the output of the equalizer Inserting a OLN connector into this jack does not interrupt signal flow to the 528E s output stage INPUT TRS phone jack wired unbalanced This is the input to the equalizer Inserting a connector into this jack interrupts signal flow from the Expander Compressor Expander Compressor I O OUTPUT TRS phone jack wired unbalanced This is the output of the expander compressor Inserting a connector into this jack does not interrupt signal flow to the equalizer SIDECHAIN TRS phone jack wired as an insert jack Tip return Ring Send Use this jack trigger or key the compressor expander from an external source INPUT TRS phone jack wired unbalanced This is the input to the expa
9. L WIRING NEEDED INPUT TO RING o TOTIP Symetrix Quick Start Guide To download the full 528E User Guide go to the 528E Voice Processor 528E product page on www symetrixaudio com Other Notes Of Interest 9 Signal Levels The 528E is designed around studio professional line levels 4 dBu or 1 23 volts The unit is quiet enough to operate at lower signal levels such as those found in semi pro or musical instrument MI equipment 10 dBu or 300 millivolts The microphone input is designed to accept low impedance microphones Switchable 48V phantom powering is provided for suitable condenser microphones The microphone input accepts signal levels from 60 to 5 dBV 10 dBV with the 15 dB pad The line input is designed to accept nominal line level 4 dBu The output line driver delivers 4 dBm into 600 Ohm or higher balanced loads An internal switch converts the line level output to microphone level or 36 dBu An unbalanced output is also available via a 1 4 TRS phone jack This jack is always line level and is unaffected by the internal switch When using the 528E with HAM radio equipment it may be necessary to build an L pad attenuator in order to level match the 528E s unbalanced 1 4 TRS output to a HAM radio transceiver s unbalanced input The 528E has a level of 2 dBu 10 dBV at its unbalanced output which translates to 0 615 volts RMS The typical HAM radio transceiver has an input impedance of
10. Quick Start Guide 528E Voice Processor Before You Begin 1 What Ships in the Box M The 528E hardware unit M An IEC power cable M This Quick Start Guide Getting Help You can download the complete 528E User s Guide from www symetrixaudio com If you have questions beyond the scope of the help guide contact Symetrix Customer Service in one of the following ways Phone 425 778 7728 8 00 am to 4 30 pm Monday through Friday Pacific Time Email tech symetrixaudio com Web www symetrixaudio com Notational Conventions in this Quick Start Guide NOTE Identifies information that needs extra emphasis Generally supplies extra information to help you to better use the 528E CAUTION Identifies information that if ignored may cause damage to the 528E unit or other equipment in your system WARNING ldentifies information that if ignored may be hazardous to your health or that of others CAPS Controls switches or other markings on the chassis of the 528E CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN A TO REDUCE THE RISK OF FIRE OR WARNING etectric sHock Do NoT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE A RISQUE DE CHOC ELECTRIQUE AVI NE PAS OUVRIR SEE OWNERS MANUAL VOIR CAHIER D INSTRUCTIONS No user serviceable parts inside Refer servicing to qualified service personnel Il ne se trouve a l interieur aucune piece pourvant entre repar e l usager S adresser a un reparateu
11. ce 48V nominal 22 to 60 dB pad out 7 to 45 dB pad in Microphone Input Maximum Input Level 3 dBu pad out 126 dBV 150 0 Ohm source 20 Hz to 20 kHz 0 05 2 kHz 50 dB gain 17 dBu output gt 60 dB 40 dB gain 20 Hz to 20 kHz 10k Ohm Transformerless Balanced Bridging 24 dBu Line Input Nominal Input Level 4 dBu Line Input CMRR gt 50 dB 0 dBu 20 Hz to 20 kHz Microphone Input Type Phantom Power DIN 45 596 Microphone Preamp Gain Equivalent Input Noise EIN THD Noise Preamp only Mic Preamp CMRR Line Input Type and Impedance Line Input Maximum Input Level Parametric Equalizer Type Bands Three band Parametric Equalizer Low 16 to 500 Hz Mid 160 to 6300 Hz High 680 Hz to 22 kHz 0 3 to 4 octaves measured at maximum boost 15 dB Peak Dip Bandwidth Maximum Boost Cut Metering Type Output Level Multi segment LED bar graph 20 to 3 VU 0 VU 4 dBu VU calibrated peak responding Separate displays for de esser downward expander and compressor 0 to 20 dB per display Gain Reduction Symetrix To download the full 528E User Guide go to the 528E product page on www symetrixaudio com 11 Overall Performance Data Frequency Response 20 Hz to 20 kHz 0 0 5 dB EQ cut compressor out downward expander out de esser out 0 05 20 Hz to 20 kHz 4 dBm output Better than 89 dBu 20 Hz to 20 kHz THD Noise Noise Floor Dynamic Ra
12. f the chassis 3 Lift the top cover free of the chassis Changing The XLR Output Level The 528E ships from Symetrix with the XLR output configured for a line level output If you must have a microphone level output the following steps lead you through the process of switching the XLR line level output to microphone level or back to line level 1 Remove the top cover according to the steps outlined above 2 As you look at the unit with the front panel facing you locate the OUTPUT LEVEL switch SW7 in the upper right side of the unit just below the XLR output connector SW7 is in red in the diagram below 3 Push the switch in to select MIC level output or out to select LINE level output 4 Replace the top cover 5 Reinstall the 528E into your setup o GND m st 713 TP10 BALANCED MIC LINE OUT J12 CHGND MHQ Oo 8 amp s0 Me OUTPUT STAGE UNBALANCED il g INPUT LINE OUT SW7 RSesele Z Se8ss2 u21 e a lt a a a a a a a a a bioi iii al oO 8 MP1 C193 ET S C94 g C a ci 5 c95 ily au a AGND F MIC m i C l LINE CABLE ASSY TO J201 ON DAUCHTERBOARD 4101 Thm oth cmo A 1 C112 R191 R192 Quick Start Guide 528E Voice Processor Specifications Inputs Controls and Switches Mic Gain Phantom Power Mic Line XLR female 2 Lights at 17 dBu output level from mic preamp or line input amplifier Mic and Line Input Connectors Clip LED Balanced Transformerless Low Impedan
13. he claim In no event will Symetrix be liable for any incidental or consequential damages including but not limited to damage for loss of revenue cost of capital claims of customers for service interruptions or failure to supply and costs and expenses incurred in connection with labor overhead transportation installation or removal of products substitute facilities or supply houses Servicing the 528E If you have determined that your 528E requires repair services and you live outside of the United States please contact your local Symetrix dealer or distributor for instructions on how to obtain service If you reside in the U S then proceed as follows Return authorization At the Symetrix factory Symetrix will perform in warranty or out of warranty service on any product it has manufactured for a period of three years from date of manufacture Before sending anything to Symetrix please contact our Customer Service Department for a return authorization RA number The telephone number is 425 778 7728 Additionally support is available via E mail through tech symetrixaudio com or via the web site http www symetrixaudio com Symetrix Quick Start Guide To download the full 528E User Guide go to the 528E Voice Processor 528E product page on www symetrixaudio com Warranty amp Service cont 13 In warranty repairs To get your 528E repaired under the terms of the warranty 1 Call us for an RA number 2 Pack the unit in i
14. ide To download the full 528E User Guide go to the 528E Voice Processor 528E product page on www symetrixaudio com Refining Your Settings 6 Mic Preamp Gain Settings Set the MIC GAIN control so that the OUTPUT LEVEL LED display indicates a signal between 10 and 0 VU The CLIP LED should almost never light If it does decrease the MIC GAIN control until it does not Any loss in gain can be made up for later in the signal chain De Esser Settings The De Esser is used to reduce the level of objectionable sibilant sounds S and T sounds Engage the De Esser by pressing the DE ESS IN OUT button IN Set the THRESHOLD control so that the de esser gain reduction LED display shows about 12 dB of reduction Now tune the FREQUENCY control for the maximum sibilance reduction Finally reduce the setting of the THRESHOLD control until you reduce the sibilance to a tolerable level without harming the quality of the audio signal Downward Expander Settings Use the Expander to reduce room noise or other low level or background noise Set the THRESHOLD control to allow low level speech sounds to pass while still blocking out room sound or noise Compressor Settings Use the COMP THRES control to determine the level at which the compressor starts to work As the sound level increases above the set threshold you will see the gain reduction LED display start to work indicating the amount of gain reduction taking place Generally 3 to 6 dB is sufficien
15. ide where in the 528E s signal path you wish to insert the Hoa external processor 5 2 Patch the appropriate output jack on the 528E to the input jack of the qj EXTERNAL AUDIO PROCESSOR external processor Use either a TRS or TS patchcord 3 Patch the output jack of the external processor to the corresponding T Te 2 J input jack on the 528E Use either a TRS or TS patchcord j Changing The Sequence Of Processing i UN You may wish to change the sequence of processing within OUTPUT STAGE EQUALIZER EXPANDER COMPRESSOR DE ESS PREAMP the 528E to allow the signal processors to work on the input j ae a A Sean Nur outeur pa n signal in a particular way your way A good example of this Za Q T Q 2 Or rQ Y is the compressor should the equalizer precede or follow S Q QO o me the compressor Most studio engineers would have the equalizer follow the compressor like it normally does in the i 528E In broadcast many engineers prefer the opposite the compressor receives the output of the equalizer C T 3 i A XQ Using The Equalizer In The Sidechain TT For some applications you may want the 528E s equalizer in OUTPUT STAGE EQUALIZER EXPANDER COMPRESSOR DE ESS PRE AME 7 its sidechain rather than in the signal path Doing so makes youre SS ae ae S both the compression and downward expansion frequency O OF TIP RETURN ANG SEND its WW z conscious NOTE SPECIA
16. ignals above this threshold cause gain reduction in the compressor COMP RATIO Sets the compression ratio of the compressor EXP COMP Defeats the downward expander compressor This is not a hard wire bypass IN OUT COMPRESSOR Indicates the amount of compressor activity gain reduction at any given instant in time LED Display Parametric EQ Low FREQUENCY Varies the center frequency of the low frequency equalizer from 16 Hz to 500 Hz BANDWIDTH Varies the bandwidth of the low frequency equalizer from 0 3 to 4 inno octaves Q 0 27 to 4 8 CUT BOOST Set the degree of boost or cut 15 dB Symetrix Quick Start Guide To download the full 528E User Guide go to the 5 28 E Voice Processor 528E product page on www symetrixaudio com Front Panel cont 3 Parametric EQ Mid FREQUENCY Varies the center frequency of the low frequency equalizer from 160 Hz to 6 3k Hz BANDWIDTH Varies the bandwidth of the low frequency equalizer from 0 3 to 4 octaves Q 0 27 to 4 8 CUT BOOST Set the degree of boost or cut 15 dB Parametric EQ High FREQUENCY Varies the center frequency of the low frequency equalizer from 680 Hz to 22 kHz BANDWIDTH Varies the bandwidth of the low frequency equalizer from 0 3 to 4 octaves Q 0 27 to 4 8 CUT BOOST Set the degree of boost or cut 15 dB EQ IN OUT Hard wire bypasses the entire equalizer Output Section GAIN Sets the overall gain of the 528E
17. nder compressor Inserting a connector into this jack interrupts signal flow from the de esser De esser I O OUTPUT TRS phone jack wired unbalanced This is the output of the de esser Inserting a connector into this jack does not interrupt signal flow to the 528E s expander compressor INPUT TRS phone jack wired unbalanced This is the input to the expander compressor Inserting a connector into this jack interrupts signal flow from the mic line inputs Quick Start Guide 528E Voice Processor Rear Panel cont 5 Preamp Stage I O PREAMP STAGE TRS phone jack wired unbalanced This is the Symetrix To download the full 528E User Guide go to the 528E product page on www symetrixaudio com suitable for low impedance microphones 48V phantom powering is available at this connector OUTPUT output of the mic line preamp Inserting a connector into this jack will not interrupt signal flow to the 528E s de esser LINE INPUT XLR female connector providing a 10k Ohm balanced bridging line input intended for signals ranging from 10 dBu to 4 dBu MIC INPUT XLR female connector providing a balanced input PHANTOM POWER Now that you re familiar with the controls you can use this section to get signal running through the 528E quickly Connections Pushbutton switch enabling 48V phantom power on the MIC INPUT Connect a Mic or Line level source to the appropriate input connector on the rear of the
18. nge Processor Type Interactive Comp Limiter Downward Expander Comp Limiter Ratio 1 1 to 10 1 Downward Expansion Ratio max 1 1 8 De esser Type Program controlled high cut filter 12 dB octave 800 Hz to 8000 Hz 30 to 0 dBu Balanced Transformerless 24 dBm Balanced 18 dBm Unbalanced XLR male Lights 3 dB below clipping 200 Ohms Balanced 600 Ohms Balanced or Unbalanced Improves modulation symmetry of speech signals Frequency Range Threshold Output Section Type Maximum Output Level Connector Output Clip LED Output Source Impedance Minimum Load Impedance Voice Symmetry Switch Output Gain 15 dB Physical Size hwd 1 72 x 19 x 7 25 inches 4 37 x 48 26 x 18 415 centimeters Weight 7 6 lbs 3 5 kg net 10 Ibs 4 6 kg shipping Electrical 117V nominal 105 to 125V AC 50 to 60 Hz 15 watts maximum 230V nominal 205 to 253V AC 50 Hz 15 watts maximum Power Requirements Note The maximum operating ambient temperature is 25 degrees C Specifications subject to change without notice Symetrix Quick Start Guide To download the full 528E User Guide go to the 5 28 E Voice P rocessor 528E product page on www symetrixaudio com Warranty amp Service 12 The Symetrix Limited Warranty Symetrix Inc expressly warrants that the product will be free from defects in material and workmanship for eighteen 18 months from the date the product is shipped from the factory Symetrix s obligations under this
19. nsate for the gain reduction in the compressor section You should adjust the output GAIN control so that it provides enough signal level to your connections downstream yet still prevents the CLIP LED from illuminating The output CLIP LED monitors both the equalizer and the output stage Large amounts of EQ boost and or high signal levels can cause CLIP indications If this occurs lower the signal level via the GAIN control It is also possible for the output stage to clip if a processor inserted via the OUTPUT STAGE INPUT jack is contributing gain to the overall signal path In this case either lower the gain of the inserted processor or reduce the setting of the output GAIN control Symetrix Quick Start Guide To download the full 528E User Guide go to the 5 28 E Voice Processor 528E product page on www symetrixaudio com Typical Setups 7 Stand alone operation A vast majority of users use the 528E as a stand alone device Here the 528E replaces their usual microphone preamp and either feeds their tape machine or workstation directly in essence becoming a one input one output console EXPANDER COMPRESSOR DE ESS o AA THIS UNT CONTAINS NO a o fap USER SERVICEABLE PARTS OUTPUT SIDECHAIN INPUT OUTPUT J cy Vy O OHO J j X b O Q JT AW 2 TIP RETURN RING SEND POWER FRONTPANEL L W INPUT SELECT UT WY OS J SWITCHIN Q oL e 1 7 MIC POSITION S AS
20. r comp tent The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user of the pres ence 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 of the presence of important operating and maintenance servicing instructions in the literature accompanying the product i e this quick start guide CAUTION To prevent electric shock do not use the polarized plug supplied with the unit with any extension cord receptacle or other outlet unless the prongs can be fully inserted Important Safety Instructions Please read and keep these instruc tions Heed and follow all warnings and instructions Install in accordance with the manufacturer s instructions Power Source This product is intended to operate from a power source that does not apply more than 250V RMS between the power supply conduc tors or between either power supply con ductor and ground A protective ground connection by way of the grounding conductor in the power cord is essential for safe operation Grounding The chassis of this product is grounded through the ground ing conductor of the power cord To avoid electric shock plug the power cord into a properly wired receptacle before making any connections to the product A pro
21. reamp O MIC LINE Selects between the Mic input switch in and Line input switch out bas 15 PADInserts 15 dB pad for strong mic signals PROCESSOR f MIC GAIN dB Sets the gain of the mic preamp for best compromise between signal to noise ratio and O headroom CLIP Monitors inputs mic and line for clipping Illuminates 3 dB below the actual clip point PHANTOM llluminates when 48V phantom power is present at the microphone input connector The phantom power switch is located on the rear panel De Esser FREQUENCY Sets the rolloff cutoff frequency of the de esser THRESHOLD Sets the threshold level for the de esser Signals above this level cause de esser action signals below do not DE ESSHard wire bypasses the de esser The de esser is active when this switch o 40 ae a 420 EXPTHRES COMPTHRES COMPRATO 30 o IEQUENCY THRESHOLD n mout IN OUT is in LED Display Indicates the amount of de esser activity at any instant in time Downward Expander Compressor towa worn wed EXP THRES Sets the threshold level for the downward expander Signals below this threshold are downward expanded reduced in level K 3 4 FREQUENCY BANDWIDTH 160 63K 3 445 5 FREQUENCY BANDWIDTH CUT BOOST 16 50 3 445 15 FREQUENCY BANDWIDTH CUT BOOST EXPANDER Indicates the amount of de esser activity at any instant in LED Display time COMP THRES Sets the threshold level for the compressor S
22. t operate this equipment under any of the following conditions explosive atmospheres in wet locations in inclem ent weather improper or unknown AC mains voltage or if improperly fused Do not install near any heat source such as radiators heat registers stoves or other apparatus including amplifiers that pro duce heat Unplug this apparatus during lightning storms or when unused for long periods of time Stay Out of the Box To avoid personal injury or worse do not remove the product covers or panels Do not operate the product without the covers and panels properly installed Only use accessories specified by the manufac turer Clean only with a dry cloth User Serviceable Parts There are no user serviceable parts inside the 528E In case of failure customers inside the U S should refer all servic ing to the factory Customers outside the U S should contact their distributor Distributor contact information is avail able online at www symetrixaudio com Servicing is required when the 528E has been damaged in any way such as when a 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 Symetrix To download the full 528E User Guide go to the Quick Start Guide 528E Voice Processor 528E product page on www symetrixaudio com Front Panel 2 Mic P
23. t unless you are using a low compression ratio below 2 1 or you want a special effect Pick a ratio suited to the task at hand low ratios and low thresholds for unobtrusive level control medium ratios for overall level control and consistency high ratios greater than 8 1 for limiting or in your face sorts of sounds Equalizer Settings Equalization is entirely dependent upon many factors and should generally be used to correct or enhance the frequency content of the signal For example the default settings should be close for the male voice For female voices the LOW EQ range shifts up to 200 or 300 Hz and the MID EQ range shifts up to 3 5 kHz If you are using a microphone that exhibits proximity effect then you ll probably need to reduce cut the bass LOW EQ response somewhat 3 6 dB should be fine but you ll have to compromise between a big full sound and the overbearing low frequency content A bit of MID EQ will help make voices cut through and seem louder The HIGH EQ can add brightness and intimacy It will take some tuning and experimentation based on the signal source microphone used and personal taste Output Settings For many applications setting the output GAIN control to 0 dB works fine If you are adding a lot of EQ this will tend to cause an overall level increase Thus you may need to lower the output GAIN appropriately Likewise if you are using a fair amount of compression you may need to add some gain to compe
24. tective ground connection by way of the grounding conductor in the power cord is essential for safe operation Do not defeat the safety purpose of the grounding plug The grounding plug has two blades and a third grounding prong The third prong is provided for your safety When the provided plug does not fit your outlet consult an elec trician for replacement of the obsolete outlet Symetrix To download the full 528E User Guide go to the 528E product page on www symetrixaudio com Danger from Loss of Ground If the protective ground connection is lost all accessible conductive parts including knobs and controls that may appear to be insulated can render an electric shock Proper Power Cord Use only the power cord and connector speci fied for the product and your operating locale Use only a cord that is in good condition Protect the power cord from being walked on or pinched particularly at the plug convenience receptacle and the point where the cord exits from the apparatus Phantom Power To prevent hazard or damage ensure that only microphone cables and microphones designed to IEC 268 15A are connected Proper Fuse The user accessible fuse is a part of the IEC AC inlet connec tor The fuseholder accepts 5 x 20 mm diameter fuses For 117 VAC opera tion the correct value is 0 25 A 250 VAC standard For 230 VAC operation the correct value is 0 125A 250 VAC standard Operating Location Do no
25. ts original packaging materials 3 Include your name address daytime telephone number and a brief statement of the problem 4 Write the RA number on the outside of the box 5 Ship the unit to Symetrix freight prepaid We do not accept freight collect shipments Just do these five things and repairs made in warranty will cost you only one way freight charges We ll pay the return freight If you don t have the factory packaging materials we recommend using an oversize box Wrap the unit in a plastic bag surround it with bubble wrap and place it in the box surrounded by Styrofoam peanuts Be sure there is enough clearance in the box to protect the rack ears We won t return the unit in anything but Symetrix packaging for which we will have to charge you If the problem is due to operator misuse or error you will have to pay for both parts and labor In any event if there are charges for the repair you will pay for the return freight All charges will be COD unless you have made other arrangements prepaid Visa or Mastercard Out of warranty repairs If the warranty period has passed you ll be billed for all necessary parts labor packaging materials and freight charges Please remember you must call for an RA number before sending the unit to Symetrix 2002 Symetrix Inc All rights reserved Printed in the United States of America Symetrix Part Number 53528E1A00 The information in this guide is subject to change without notice S
26. ymetrix Inc shall not be liable for technical or editorial errors or omissions contained herein nor is it liable for incidental or consequential damages resulting from the furnishing performance or use of this material Mention of third party products is for informational purposes only and constitutes neither an endorsement nor a recommendation Symetrix assumes no responsibility with regard to the performance or use of these products Under copyright laws no part of this user guide may be reproduced or transmitted in any form or by any means electronic or mechanical with out permission in writing from Symetrix Inc If however your only means of access is electronic permission to print one copy is hereby granted Product names mentioned herein may be trademarks and or registered trademarks of their respective owners
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