iSEMcon EMX-7150 Скачать руководство пользователя страница 17 | Manualshive

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A microphone’s random (diffuse) inci-
dence response can be approximated by
measuring the 90º incidence response
relative to a single sound source (as per
B&K literature).

The  diffuse  field  response  is  not  easy  to
measure, because it is not easy to gener-
ate a truly diffuse sound field over a wide
frequency  range  but  there  is  a  known
procedure  to  estimate  the  diffuse  fre-
quency  behavior  of  a  free  field  micro-
phone.

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Содержание EMX-7150

Страница 1: ...EMX 7150 single use microphone matched pairs triples quads iSEMcon Measurement Microphones The FOH choice PRODUCT INFORMATION 01 17 ...

Страница 2: ...psule O Ring seal Water tight connection when using Neutrik 2 NC 3FX HD connector 1 approximated by 90deg incidence response 2 The corporate names and names of the products stated in this brochure are trademarks or registered trademarks of the respective companies The EMX 7150 is a microphone made from stainless steel and using state of the art water tight Neutrik 3 connectors hav ing a very accur...

Страница 3: ...ng recording studios and home theaters It can normally be used without the included freefield calibration data file for compensation In this case take the individual calibra tion data as proof of its superb per formance TYPICAL APPLICATIONS Sound power and sound field analysis Industrial acoustics Room acoustics analysis Sound reinforcement Real time analyzers FEATURES Frequency range 10Hz 20kHz S...

Страница 4: ...y Response calibrated 10 20 000 Hz Housing Material Stainless Steel Frequency Response IEC61672 2013 class 1 1 Sealing O ring Polyurethane Epoxy Inherent Noise100 10000 Hz 30dB typ Output Connector XLR male Max SPL 3 distortion limit 141dBspl Dimensions Ø 7mm x 6 152mm Max SPL 3 distortion typ 143 dBspl Weight 0 3 oz 75g Max SPL 3 THD 12V Phantom 140 dBspl CONFORMITY IEC 61000 6 1 ELECTRICAL SPECI...

Страница 5: ...FREQUENCY RESPONSE ISOBARS typical ...

Страница 6: ...POLAR PATTERNS typical ...

Страница 7: ...THD vs SPL typical k2 k3 and THD blue red green THD vs SPL typical Equivalent Noise FFT 1 3 Octave A weighted ITU R 468 RMS weighted magenta blue green red ...

Страница 8: ...ALIBRATION DATA FILE FORMAT Human readable ASCII file 1 12 octave www iSEMcon com freefield Sensitivity 5 88 mV Pa 1kHz 10 00 0 02 11 26 0 10 19992 19 0 93 frequency Hz amplitude response dB THD ref 1kHz ...

Страница 9: ...microphone capsule built in impedance con verter and signal conversion circuitry as well as the acousto mechanical characteristics of the diaphragm equivalent stiffness iSEMcon is one of the first microphone manufacturers disclosing the secret about the temperature behavior of electrets based measurement microphones TEMPERATURE STABILITY ...

Страница 10: ...ictable performance whether it is used in a cold autumn night or if the hot summer sun burns the microphone body The table below shows the microphone sensitivity change 1kHz The diagram on previous page shows how tempera ture affects the frequency response behavior of an EMX 7150 microphone The microphone capsule itself is the part being responsible for most of the temperature change see also Tem ...

Страница 11: ...i channel audio ex perience each microphone is individu ally calibrated and selected to meet our standard matching tolerance The matching tolerance is applicable within the microphone s entire frequency range For the EMX 7150 the matching toler ance on frequency response is 0 5dB and 1mV on microphone sensi tivity The matching process 1 4 The first stage of testing begins with the selection of mic...

Страница 12: ...Matching curve for a EMX 7150 pair Diagram A vs B vs class 1 and 2 class tolerances ...

Страница 13: ...rse you can compensate for microphone sensitivity differences with your recorder s level controls or mixer s pan pots but not for frequency response mismatch Matched frequency response is impor tant for the sharpest possible imaging The more closely the stereo micro phones are matched in frequency re sponse the better the image focus and localization For example Suppose the left microphone is 3 dB...

Страница 14: ...equen ce Gating No room response re flections Replacing Reference mic with EMX 7150 microphone Calculating EMX 7150 frequency res ponse from impulse response data Each microphone sold comes with its individual calibration data This includes a calibration chart pdf file as well as hu man readable calibration files for both freefield and diffusefield response ...

Страница 15: ... Standard Refernce Microphone using sine sweep signal 1 1 Freefield microphones as well as pres sure response microphones have the sa me frequency response behavior at low frequencies 60 dBspl LEVEL LINEARITY Each microphone is SPL linearity checked against class 1 tolerances 0 8dB as per IEC 61672 1 2013 ...

Страница 16: ... or sound sources so that the sound waves arri ve from all directions Pressure field This is found in small confined spaces like sound calibrators Depending on the nature of the sound field an appropriate microphone which is optimized for the sound field could be selected Unfortunately there are many practical situations where the sound field is not really of a well de fined type This application ...

Страница 17: ...ponse relative to a single sound source as per B K literature The diffuse field response is not easy to measure because it is not easy to gener ate a truly diffuse sound field over a wide frequency range but there is a known procedure to estimate the diffuse fre quency behavior of a free field micro phone ...

Страница 18: ...used the averaged data to evaluate a 19th order polynomial This is now used to derive the diffuse field response from the microphones free field re sponse data Typical freefield measurement Speaker measurement The micro phone should target to the sound source speaker Typical diffusefield meas urements Concert SPL monitoring normally at FOH Room Acoustics measurement RT60 the microphone should not ...

Страница 19: ...lection systems for recycling in the European Union For further information please contact your local authority or retailer where you have purchased the product This microphone is a maintenance free product but could require a recalibration in case of a mechanical impact or perodi cal temperature cycling use at the min and max working temperature In an unlikely event of equipment failure please co...

Страница 20: ...brator adapter Calibration data on USB stick Pouch 800080 EMX 7150 CF MP 2x EMX 7150 microphone MATCHED PAIR clamp w adapter screw WS 7XL windscreen 1X 1 4 to IEC 1 2 13 2mm calibrator adapter calibration data on USB stick Pouch 800081 EMX 7150 CF MT 3x EMX 7150 microphone MATCHED TRIPLE clamp w adapter screw WS 7XL windscreen 1X 1 4 to IEC 1 2 13 2mm calibrator adapter calibration data on USB sti...

Страница 21: ...t the warranty criteria The warranty undertaking consists at the option of iSEMcon of the elimination free of charge of material and manufacturing defects through repair exchange of parts or replace ment of the entire product If iSEMcon re pairs the product exchanges parts or replaces the product then the warranty claim for the defect in question or the replaced product is valid for the remaining ...

Страница 22: ... damage and applying incorrect operating voltage Defects in the product resulting from or in connection with modifications made to the product without prior agreement and written statement Defects in the product resulting from force majeure Defects in the product of which you were already aware of at the time of purchase Defects in the product caused by the use of accessory components or periphera...

Страница 23: ... create a risk of personal injury or death Buyer assumes all risk of loss damage or in jury alleged to arise from the failure or faulty performance of an iSEMcon product in any unauthorized application Buyer agrees to indemnify and hold harmless iSEMcon and its directors employees agents representatives and sales partners from and against any and all claims costs damages losses and ex penses inclu...

Страница 24: ...Mcon LLC 8530 Sylvania Metamora Rd Sylvania OH 43560 USA Fon 1 877 309 1002 iSEMcon GmbH Zeppelinstr 6 68519 Viernheim Germany Fon 49 6204 911 24 91 Fax 49 6204 911 24 90 sales iSEMcon com www iSEMcon com ...

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