Nady Systems Stereo Equalizer GEQ 215 User's Manual
Contents
1. In bypass mode the audio signal will flow through at unity gain e Use the range selection switch to select between a 6dB or 12dB level adjust range The dual color range LED will indicate green for 6dB and red for 12dB e The level control allows adjustment between OFF center detent and 6dB Note The unit is equipped with a red overload LED which illuminates when the signal reaches 5dB prior to clipping It is normal for the overload LED to flash occasionally but if the overload LED is on steady you must readjust the level control FRONT PANEL CONTROLS amp CONNECTIONS NADY CHO rower O 10 D 3 12 ened RANGE GEQ 215 o oo ou ZQUALZER CAUTION Always turn on your equalizer BEFORE your power amplifiers are turned on and always turn off your equalizer AFTER your power amplifiers have been turned off O cup aveass s6 12 1 Power Switch To turn the equalizer ON or OFF press the upper or lower portion of this button 2 Level Control This controls the level of signal to the equalizer It is capable of 6dB of gain This control is used to adjust for variation in input level to the equalizer channel or to compensate for the equalization applied to the input signal 3 Filter Range Switch amp Indicators The gain range of the filter sliders is switchable as a group from 6dB to 12dB for maximum boost cut capability At 6dB the green LED will illuminate and at 122. dB the red LED will illuminate 4 In Out Bypass Switch amp Indicator This switch inserts or removes the equalizer channel from the signal path The amber LED lights when the switch is depressed to indicate that the unit or channel is in the equalizing mode In the bypass mode the signal is routed from the input directly to the output The bypass function is FET switched to prevent switching transients when inserting the equalizer into the circuit path Use this switch to compare equalized and unequalized material When there is no power to the unit the equalizer automatically reverts to bypass 5 Peak Clip Indicator This red LED illuminates if any section of the equalizer is within 5dB of clipping Occasional blinking of this LED is acceptable but if it remains on more than intermittently you should turn down either the equalizer s level controls or reduce the output level of the preceding component to avoid audible distortion 6 Filter Level Slider Controls Each one of these linear potentiometers will boost or cut its noted frequency by either 6dB or 12dB depending on the filter range selected When all of the sliders are in center detented position the output of the equalizer is flat Each slider is marked with the center frequency of its band pass filter REAR PANEL CONTROLS amp CONNECTIONS 7 7 IEC Power Cord Receptacle This is used to connect the AC power source to your equalizer Power requi
3. O QUALIFIED SERVICE PERSONNEL the user to the presence of important operating and service instructions in the literature enclosed with this unit IMPORTANT SAFETY INSTRUCTIONS When using this electronic device basic precautions should always be taken including the following 1 2 11 Read all instructions before using the product 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 This product should be used only with a cart or stand that will keep it level and stable and prevent wobbling 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 an audiologist The product should be positioned so that proper ventilation is maintained The product should be located away from heat sources such as radiators heat vents or other devices including amplifiers that produce heat 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 size and correct rating The power supply cord should 1 be undamaged 2 never share an outlet or extension cord with other devices
4. a Ne ee ee a Get OWNERS MANUAL ji D I e O a gt GEQ 215 NADE ee ee eo eco GRAPHIC EQUALIZER cop ovmass a6 at cup avpss a6 att LEVEL LEVEL GEQ 219 GEQ 215 Congratulations on your choice of the GEQ 215 graphic equalizer you have purchased one of the finest graphic equalizers on the market today This unit was developed using the expertise of professional sound engineers and working musicians You will find that your new NADY AUDIO Equalizers has superior performance and greater flexibility than any other equalizers in its price range Please read this manual carefully to get the most out of your new unit Thanks for selecting NADY AUDIO as your choice in graphic equalizers FEATURES Compact and durable all steel chassis design the GEQ 215 provides optimum audio control for all live and recording applications plus ultimate operating convenience and maximum reliability 2 Channel Single Rack Space 15 2 3rd Octave Bands Each Center detents on faders Channel e Active balanced XLR and 1 4 TRS and unbalanced RCA input output connectors e Variable level control e Power off automatic bypass function Equali e Constant Q bandwidth from each filter with 3 center frequency gualize OMOE bypass SWIN accuracy e Peak overload threshold LED Parallel filter design for minimal phase distortion Shielded internal power s
5. anced Unbalanced Connectors 3 Pin XLR 1 4 TRS Balanced RCA Unbalanced Impedance 20K Ohms Balanced 15K Ohms Unbalanced Maximum Level 18dBV OUTPUTS Type Active Balanced Unbalanced Connectors 3 Pin XLR 1 4 TRS Balanced Impedance Typically lt 600 Ohms Maximum Level 16dBV Clip LED Threshold 5dB Below Clipping Low Cut Filter 40Hz 12dB octave Frequency Response 20Hz 20KHz 1dB THD Noise lt 0 002 1KHz all faders at mid position Signal to Noise Ratio 93dB 1KHz Channel Separation 60dB 1KHz 10 Line Voltage 100 130V AC 50 60Hz 200 240V AC 50Hz Power Consumption Maximum 15 watts SIZE 19 W X 1 75 H X 8 66 D 1U 48 2cm X 4 4cm X 12 7cm WEIGHT 6 16lbs 2 8Kg The specifications above are correct at the time of printing of this manual For improvement purposes all specifications for this unit including design and appearance are subject to change without prior notice ONE YEAR LIMITED WARRANTY Nady Systems Inc warrants to the original consumer purchaser that the unit is free from any defects in material or workmanship for a period of one year from the date of original retail purchase If any such defect is discovered within the warranty period Nady Systems Inc will repair or replace the unit free of charge subject to verification of the defect or malfunction upon return to Nady Systems Please do not return your Nady product to t
6. away from direct sunlight Avoid damage to the internal circuits and the external surface by keeping the unit away from sources of high heat e Avoid using spray type insecticide or solvents near the equip ment It can damage the finish an might ignite suddenly To avoid damaging the finish never use denatured alcohol paint thinner or other similar chemicals to clean the equipment e Place the unit on a flat and solid surface or in a rack To enjoy your NADY AUDIO graphic equalizer for a long time please read this owner s manual thoroughly OPERATING INSTRUCTIONS Before starting to equalize your sound system there is some information you should know and procedures you should follow 1 Set channel levels to the center detent OdB unity gain on the front panel Enable the BYPASS switch Note The amber LED is ON Set all slide controls to the center detent or OdB unity gain position Select the 6dB range switch green LED ON Apply signal to the system Disable the BYPASS switch amber LED OFF If the CLIP overload LED is on you must turn down the level control You may now start equalizing your system oO ON Do F amp F WwW DY Switch the range switch to 12dB red LED is lit if the 6dB range does not provide sufficient gain The GEQ 215 is equipped with a BYPASS switch with an LED indicator If you disable the BYPASS switch the LED will turn off and all equalization settings will be restored
7. e dealer store from which you purchased this product Do not attempt to service this unit yourself as it can be dangerous and will also void the warranty ah USJ DO ICD NADY SYSTEMS INC 6701 SHELLMOUND STREET EMERYVILLE CA 94608 Tel 510 652 2411 Fax 510 652 5075 www nady com
8. eded A graphic equalizer is a solution to any number of sound problems or creative urges SOUND REINFORCEMENT APPLICATIONS By routing the signal from the mixer to the main power amplifiers or crossover the overall frequency of the mix may be altered to do a number of things A Through the use of a real time audio spectrum analyzer a calibrated microphone and a pink noise source the audio system may be TUNED to make the overall audio spectrum response of the audio reinforcement system and the room environment flatter in its frequency response B By turning up the audio reinforcement system to the feedback point then attenuating the oscillating frequency 1 3 octave resolu tion then turning the system up to attenuate the 2nd oscillating frequency and then the 3rd and so on you can enable the entire audio system to have much more gain before feedback C Amplifiers and speakers may be protected by the use of the LOW CUT feature of the equalizer Wind noise or the loud percussive sound of dropped microphones etc could potentially cause damage to the amps and or speakers By rolling off the extreme LOW frequencies with the LOW CUT filter a measure of protection is added to the system without severely affecting the overall sound quality D In noisy environments the audio signal may be tailored for better intelligibility and penetration This is especially useful for public address systems E Creative use of the equalize
9. ent Nady Systems Inc will not repair nor be held responsible for any units returned without proper identification return address and RA number clearly marked on the package 3 Per the above Nady will perform all warranty service and return the unit to you at no charge Nady Systems will inform the buyer if product sent in does not meet the terms of this warranty and will provide a quote for fixing the unit and or shipping it back exclusively at the buyer s expense SERVICE FOR YOUR NADY AUDIO PRODUCT In the U S If you are experiencing operational problems with your system please refer to the Support page at www nady com for assistance Should your wireless system require service please contact the Nady Service Department at 510 652 2411 for a Return Authorization R A Number and service quote if out of warranty Make sure the R A Number is clearly marked on the outside of the package that you are returning If your unit is out of warranty please enclose a cashier s check or money order or pay by credit card per instructions by the Nady Service Department Ship your unit prepaid to Nady Systems Service Department 6701 Shellmound Street Emeryville CA 94608 Include a brief description of the problem you are experiencing For service of a unit under warranty please follow the instructions in the following section Outside the U S For service or warranty matters please contact the Nady distributor in your country through th
10. he store where it was purchased as Nady Systems handles your warranty service directly Communication with our Service Department is the most efficient means of servicing your unit and we are dedicated to keeping you a satisfied customer To the extent permitted by law any applicable implied warranties including warranties of merchantability and fitness are hereby limited to one year from the date of purchase Consequential or incidental damages resulting from a breach of any applicable express or implied warranties are hereby excluded This warranty is in lieu of all other agreements and warranties general or special express or implied and no representative or person including a Nady dealer agent or employee is authorized to assume for us any other liability in connection with the sale or use of this Nady Systems product Whereas some states do not allow limitations on how long implied warranties last and do not allow exclusion of incidental or consequential damages the above limitations and exclusions may not apply to you This warranty gives you specific legal rights and you may also have other rights which may vary from state to state This warranty is subject to the following conditions 1 This system must have been purchased from an authorized Nady dealer and all warranty service must be performed by Nady s service department Any service not performed by Nady will automatically void this warranty 2 Items not covered physical da
11. mage resulting from improper handling of the unit in transit from the factory by the shipper Nady Systems is not responsible for such damage and all such claims must be made against the shipping company by the consignee defects caused by normal wear of the product expendable parts are typically connectors cables potentiometers switches and similar components damage or defects caused by abuse neglect accident failure to connect or operate the unit in any way that does not comply with applicable technical or safety regulations or improper repair excessive heat or humidity alteration or unreasonable use of the unit causing cracks broken cases housings or parts damage caused by leaking batteries finish or appearance items items damaged in shipment en route to Nady Systems Inc for repair The warranty is null and void if any Nady serial number has been removed or defaced How To Obtain Service 1 If factory service is required you must contact our Service Department at 510 652 2411 for a return authorization RA number Make sure the RA number is clearly marked on the outside of your package Please note if an RA number is not included our shipping department cannot accept your package 2 Send the unit back to Nady Systems 6701 Shellmound Street Emeryville CA 94608 freight pre paid You must include proof of date and place of purchase i e photocopy of your bill of sale or Nady cannot be responsible for repair or replacem
12. r allows shaping of the signal for a more pleasing sound or for special effects The only limits are those of taste and imagination MUSICAL INSTRUMENT APPLICATIONS A Putting an equalizer in line with a musical instrument allows you to modify the sound of the instrument You can brighten the sound or add body to a thin sounding instrument or even give the sound a totally different character B An equalizer will allow you to eliminate unwanted sounds like a 60 cycle HUM from a badly grounded amplifier STUDIO APPLICATIONS A graphic equalizer is one of the most useful tools in the sound engineer s bag NADY AUDIO equalizers offer the features and flex ibility to perform where it counts in the studio A Fix a track that doesn t sound quite right Put the equalizer in an effects send and return it to the MIX bus B Create an artificial stereo by splitting a monaural signal and equalizing the split signals differently then panning one equalized signal to the right and the other signal to the left C Shape the sound by changing the frequency response of the track D Special effects like a telephone sound can be created by cutting off the LOW end to 200Hz and the HIGH end to 6KHz SPECIFICATIONS EQUALIZER Equalizer Control Bands 2X15 2 3 Octave ISO Spacing From 25Hz to 16KHz Filter Type Constant Q Slider Travel 20mm Center Detent Level Control Range 6dB or 12dB Selectable INPUTS Type Active Bal
13. raws a relatively small amount of current during idle the unit may be left on continuously The equalizer does not generate an unduly large amount of heat and does not need to be specially ventilated or cooled It should not be subjected however to high heat environments Although the unit is shielded against radio frequency RF and electromagnetic interference EMI extremely high fields of RF and EMI should be avoided INPUT OUTPUT CONNECTIONS The 1 4 phone jack and XLR connector inputs and outputs can be used for balanced and unbalanced connections CAUTION Using more than one connector at a time for the INPUT OUTPUT pair could unbalance balanced lines cause phase cancellation short a conductor to ground or cause damage to the other equip ment connected to the equalizer For balanced connection wire the connectors as follows XLR JACK CONNECTION For unbalanced operation wire the connectors as follows XLR JACK CONNECTION PIN 1 GROUND PIN 1 GROUND optional use as shielding to prevent hum PIN 2 HIGH PIN 2 HIGH PINS Low 1 4 TRS JACK CONNECTION TIP HIGH 1 4 TRS JACK CONNECTION SLEEVE GROUND TIP HIGH RCA JACK CONNECTION RING LOW SLEEVE GROUND TIP HIGH optional use as shielding to prevent hum SLEEVE GROUND POWER CONNECTION The GEQ 215 is designed for operation with 105 130 volts AC at 60Hz or 210 240 volts AC at 50Hz power sources Power requi
14. rements 115 230VAC 50 60Hz 8 AC Voltage Selector Set this slide switch to match your line voltage supply CAUTION For new installations and portable sound systems or in any situation in which the AC power is suspect it is wise to confirm appropriate voltage and line polarity BEFORE connecting the instrument to the power source 9 Fuse Holder This fuse holder contains an AC primary fuse This fuse should be replaced with the same type fuse when this is blown out If they continuously blow 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 1 Amp for 100 130VAC and for 220 240V AC 10 Ground Lift Switch This switch is used to disconnect the signal ground from the AC power and chassis earth ground This switch should be put in the LIFT position if the speakers produce humming sounds caused by a ground loop 11 Input Output Connectors See INPUT OUTPUT CONNECTIONS section page 5 for proper wiring of the XLR 1 4 TRS and RCA connectors for desired active balanced or unbalanced operation Paralleling inputs and outputs may be accomplished by using any of the 3 connectors Note while you can use any input connector with any output connector only one of these connectors is to be used at a time TYPICAL SET UP The GEQ 215 graphic equalizer may be used wherever modification of the frequency contour of a sound system is ne
15. rements for electrical equipment differ from area to area In new installations and portable sound systems or any situation in which the AC power is in question it is wise to confirm the voltage and select the appropriate line voltage switch before connecting the instrument to power sources Check to see that the unit is set to the voltage for your area by referring to the table below Europe except UK 230V 50Hz UK and Australia 240V 50Hz USA and Canada 115V 60 Hz For other areas please check with local authorities If the voltage selector is not set for your area Confirm that the power cord is not plugged into a wall outlet Move the voltage selector switch with a small screwdriver so that the marker is set to the voltage for your area PRECAUTIONS Protecting yourself from electric shock e Never touch the plug with wet hands Always pull out by the plug and never the cord Only let a qualified professional repair the equipment An un authorized person might touch the internal parts and receive a serious electric shock Note Removing the chassis screws and opening the unit will automatically void your warranty e Never allow a child to put anything into the equipment Protecting your NADY AUDIO Graphic Equalizer e Use only a household AC power source Never use a DC power source e If water is spilled on or in the unit unplug it and call for service e Make sure that the equipment is well ventilated and
16. so that the outlet s or extension cord s power rating is exceeded and 3 never be left plugged into the outlet when not being used for a long period of time Care should be taken so that objects do not fall into and liquids are not spilled through the enclosure s openings The product should be serviced by qualified service personnel if A The power supply cord or the plug has been damaged B Objects have fallen into or liquid has been spilled onto the product C The product has been exposed to rain D The product does not appear to operate normally or exhibits a marked change in performance E The product has been dropped or the enclosure damaged 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 INSTALLATION To ensure years of enjoyment from your NADY AUDIO graphic equalizer please read and understand this manual thoroughly before using the unit The GEQ 215 is designed for mounting in a standard 19 equip ment rack or one of the many rack type portable cases available on the market The unit is 1u single rack 1 75 and 5 inches deep Install the equalizer in a rack with rack screws not included Route the A C power cord to a convenient power outlet away from audio lines The unit may be turned on and off from the front panel power switch or a master equipment power switch Since the unit d
17. upply with AC input and selectable line voltage 115V 60Hz or 230V 50Hz Ultra low noise circuitry ilit a Ground lift switc e Selectable range 6dB or 12dB gain TABLE OF CONTENTS FEATURE Seenen an a e e EREE 3 DateotP rchase WARNING eere eere ae a ern oe INSTALLATION kesicinin aa 5 Dealer s Name OPERATING INSTRUCTIONS ce ccecceseeeeeeeeeeeeteeeeeeteeeeaeeaees 6 FRONT PANEL CONTROLS amp CONNECTIONS 7 City REAR PANEL CONTROLS amp CONNECTIONS nsee 8 TYPICAL SET P erano oceanic eciez cannes eienens 9 State Zip Sound Reinforcement Applications ccceeesceceeteeeteeereeees 9 Musical Instrument Applications cccscssececccetetetecececeeeneees g Model Studio AppliCatiONnS nrnna 9 SPECIFICATIONS ccccsscessscsssssssssssessesssssestsestsnssvnesseeste ig Sala WARRANTY venicctiectiini en iniinieiendsndienialeciaelienns 11 An equilateral triangle enclosing a lightning flash arrowhead symbol is CAUTION intended to alert the user to the presence of uninsulated dangerous voltage within the product s enclosure which may be of sufficient DO NOT OPEN magnitude to constitute a risk of electric shock ATTENTION RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK A i Pre DO NOT REMOVE COVER OR BACK 1 An equilateral triangle enclosing an exclamation point is intended to alert NO USER SERVICEABLE PARTS INSIDE REFER SERVICING T
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