Nady Systems FS4N Musical Instrument User Manual
Contents
1. DO NOT REMOVE COVER OR BACK NO USER SERVICEABLE PARTS INSIDE REFER TO SERVICING TO QUALIFIED SERVICE PERSONNEL CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK IMPORTANT SAFETY INSTRUCTIONS WARNING When using electric products basic precautions should always be followed including the following 1 Read all the instructions before using the product 2 Do not use this product near water e g near a bathtub washbowl kitchen sink in a wet basement or near a swimming pool etc 3 This product should be used only with a cart or stand that will keep it level and stable and prevent wobbling 4 This product in combination with headphones or speakers may be capable of producing sound levels that could cause permanent hearing loss Do not operate for a long period of time at a high volume level or at a level that is uncomfortable If you experience any hearing loss or ringing in the ears you should consult aaudiologist The product should be located so that its location or position does not interfere with its proper ventilation The product should be located away from heat sources such as radiators heat vents or other devices including amplifiers that produce heat 7 The product should be connected to a power supply only of the type described in the operating instructions or as marked on the product Replace the fuse only with one of the specified type and size and with the correct rating 8 The power supply cor2. FS 4N FEEDBACK SUPPRESSOR NoTcHO i e i s BYPASS FREQ xx DEPTH FREQ Axl DEPTH FREQ Ex DEPTH FRI x1 DEPTH O o POWER FS 4N FEEDBACK SUPPRESSOR Congratulations You have purchased one of the finest professional feed Date of Purchase back suppressors on the market today This unit was developed using the expertise of professional sound engineers and working musicians You will find your new City NADY AUDIO FS 4N has superior performance and State greater flexibility than any other feedback suppressor in its price range Please read this manual carefully to get Zip the most out of your new unit Thanks for selecting NADY AUDIO as your choice in feedback suppressors Dealer s Name Model Serial Features O ffering the ultimate ease of operation the FS 4N is the straightforward solution to feedback and hum problems in live sound applications Single rack space 1U rugged metal housing for reliability Four extremely narrow 1 60 octave notch filters each independently adjustable from 60 to 6 000 Hz allow quick elimination of unwanted problem frequencies without affecting the integrity of the overall sound A control for adjusting the notch depth on each filter enables precise attenuation up to 20 dB at each selected frequency A push button bypass switches all four notches in and out simultaneously for fas
3. during use REAR PANEL 10 11 BALANCED SIGNAL INPUT JACK 1 4 TRS This 1 4 TRS Tip Ring Sleeve phone jack is wired for balanced input signals 0 775V 0dBm 15K O hms and signal polarity is Tip Cold Ring Hot and Sleeve Ground BALANCED SIGNAL OUTPUT JACK 1 4 TRS This 1 4 TRS jack provides a balanced signal output 600 O hms and is wired with the same signal polarity as the Input Jack above 24 VDC TERMINAL Use this screw terminal to operate the unit with external 24 VDC powering either from a power supply ora battery O bserve the correct polarity and when making connections as marked on the terminal The power requirement is 250 mA AC FUSE HOLDERS This fuse holder contains an AC primary fuse W hen this fuse blows replace it with the same type fuse size and power rating 120 VAC 0 315A 250V 230 VAC 0 2A 250V If it continuously blows stop replacing the fuse and refer servicing to qualified personnel CAUTION After checking the AC supply voltage be sure that the correct fuse is in the fuse holder POWER CONNECTOR The IEC cord connector is used to connect the AC power source to your power amplifier CAUTION DO NOT REMOVE THE CENTER GROUNDING PIN AC VOLTAGE SELECTOR SWITCH Before plugging in the power cord check to see that the unit is set for the proper voltage for your area 115V 60Hz or 230V 50Hz TYPICAL SETUP The FS 4N Feedback Suppressor is typically c
4. OTCH DEPTH POWER CONSUMPTION POWER SOURCE FUSE REQ UIREMENTS DIMEN SIONS WEIGHT One 1 4 TRS phone jack 0 775 0dBm 15 K ohm balanced One 1 4 TRS phone jack 0 775 0 dBm 600 OHM BALANCED 20Hz 20KHz lt 1 0 dB gt 68 dB lt 0 4 60 HZ 6 KHz continuously variable 0 20 dB 5 5 Watts AC 120V 230V 50 60 Hz DC 24V 120 VAC 0 315 A 250V 230 VAC 0 2A 250V 19 X 1 75 X 8 3 483 X 44 X 210mm 1U rack height 6 6 Ibs 3 0 Kg Note For improvement purposes specifications design and appearance are subject to change without prior notice INTERNATIONAL For service please contact the NADY AUDIO distributor in your country through the dealer from whom you purchased this product DO NOT ATTEMPT TO SERVICE THIS UNIT YOURSELF AS IT CAN BE DANGEROUS AND ALSO WILL VOID THE WARRANTY Ri 2 Eee A UIL K NADY SYSTEMS INC 6701 SHELLMOUND STREET EMERYVILLE CA 94608 Tel 510 652 2411 Fax 510 652 5075 www nadywireless com 2000 NADY SYSTEMS
5. d should 1 be undamaged 2 never share an outlet or extension cord with other devices so that the outlet s or extension cord s power rating is exceeded and 3 be left plugged into the outlet when left unused for a long period of time 9 Care should be taken so that objects do not fall into and liguids are not spilled through the enclosure s openings 10 The product should be serviced by qualified service personnel when A The power supply cord or the plug has been damaged or B Objects have fallen into or liquid has been spilled onto the product or C The product has been exposed to rain or D The product does not appear to operate normally or exhibits a marked change in performance or E The product has been dropped or the enclosure damaged 11 Do not attempt to service the product beyond what is described in the user maintenance instructions All other servicing should be referred to qualified service personnel Ou CONTROLS AND CONNECTIONS FRONT PANEL O 7 NOTCH I NOTCH i NOTCH i NOTCH 4 99 09 99 0 o Q O St ao O 1 STA O i s O 104 wm 2 GA QQ DG 2 1 POWER SWITCH To turn the unit ON or OFF press the upper or lower portion of this button 2 POWER LED INDICATOR This LED illuminates when the power is turned ON 3 AUDIO SPECTRUM ANALYZER DISPLAY This in line 8 band audio spectrum analyzer enables quick identification of the frequency ran
6. ge of any problem frequency and allows monitoring of the amount of reduction selected in any of the notches The display monitors both the input and output levels as selected by the Bypass switch 5 It monitors the output when the switch is IN down and the input when the switch is O UT up for bypass mode The audio spectrum display has a range of 25Hz to 16 KHz in 8 frequency bands with 6 LEDs in each tree indicating levels from 3 to 20dB 4 NOTCH FILTERS Use these notch filters to control up to four different feedback howling or screeching resonances frequencies independently a FREQUENCY SELECT CONTROL Adjust the desired suppression frequency for each notch independently with this control The filters are extremely narrow 1 60 octave so take care in properly tuning out the desired feedback b SCALE FREQUENCY MULTIPLIER SWITCH Use this switch to select either X1 up or X10 down multiplier of the frequency scale on the Frequency Select Control as needed to tune in on the desired suppression frequency c NOTCH DEPTH CONTROL Use this control for precise adjustment of the amount of attenuation up to 20dB necessary to suppress the selected feedback frequency For the least effect on your overall sound adjust the attenuation to just below the amount needed to suppress feedback 5 BYPASS IN OUT SWITCH Use this switch to select all 4 notches simultaneously either IN down or bypassed O UT up for fast monitoring of results
7. onnected between the mixer and other effects or processors and or the power amplifier in live sound applications The entire audio in a given setup should feed through the FS 4N so that you may control all hum noises and feedback appearing anywhere in the signal you are amplifying Since both monitor if used and FO H Front of House amplification may cause feedback it may be necessary to suppress frequencies in each loop Furthermore you may also be using a stereo FOH mix Since the FS 4N isa mono unit up to three units may be needed in stereo live sound setups for total control of the monitor and each side of the stereo FOH amplification STERED _ m HUINI Li AAKE F O H MIX MONITOR MIX STEREO AMP FRONT OF HOUSE MONOAMP C MONITOR STEREO AMP O MONO AMP VOL VOL VOL Ll F O H SPEAKERS STAGE MONITOR SPEAKERS NOTE Insert any processors EO s etc between the mixer and the FS 4N The Feedback Suppressor should be the last processor in line before connecting the audio to the amplifier SPECIFICATIONS INPUT CONNECTOR IN PUT SEN SITIVITY IN PUT IMPEDAN CE OUTPUT CONNECTOR OUTPUT LEVEL OUTPUT IMPEDANCE FREQUENCY RESPONSE SIGNAL TO N O ISE RATIO T H D NOTCH FILTER FREQUENCY RANGE N
8. t monitoring of results during use An in line 8 band audio spectrum analyzer LED display enables quick identification of the frequency range of any problem frequency facilitating immediate reaction and suppression by the operator 1 4 TRS balanced jacks for both SIGNALIN and OUT Internal shielded power supply with external fuse and 115V 60Hz 230V 50Hz AC select switch IEC power cord socket for AC operation and screw terminals for optional 24 VDC input powering CONTENTS FEATURES zosia ETORO EDER OS REE DEERE EA aandelen 2 WARNING seeren nt aarden lini aja aj K M K AI N V N N K aa my HAN tanend 4 CONTROLS AND CONNECTIONS veering 5 TYPICALSETUP uuu au y yaaa aaa yayawa picarniaaiouas senses deen snesnadinenitennitetarsuarnnaninn nanna viriai 7 SPECIFICATIONS sisssssidscatsndescdvnnisagendientuanadeatavarsacdnacvugatasecanastausudauneadawdavassneusunedsereauerasaancnstaaninaancinsdiaus 8 An equilateral triangle enclosing a lightening flash arrowhead symbol is intended to alert the user to the presence of uninsulated dangerous voltage within the product s enclosure which may be of sufficient magnitude to constitute a risk of electric shock CAUTION DO NOT OPEN ATTENTION RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR An equilateral triangle enclosing an exclamation point is intended to alert the user to the presence of important operating and service instructions in the literature enclosed with this unit
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