
83
82 m/"
-10 dB
81 OFF'-' ON
Technical data
Acousticprinciple . . . . . . pressuregradient! interferencereceiver
Directionalcharacteristic. . . . . . . . . . . . . supercardioidI lobe
Frequencyresponserange. . . . . . . . . . . . 50 to 20000 Hz
Free-field,no-loadtransmissionfactoraUkHz 50 mVI Pa(15mVIPa)
b -28dBV (-38dBV)
Equivalentsoundpressurelevel
asperDIN45500, curveA . - . . - - . - 8 dB (15dB)
asper DIN45405 I CCIR468 - - . - - . 20 dB (26 dB)
Max-soundpressurelevel. - - . . - 123dB (133dB)
Output- - . - - . - . . - - . . . . . . . . . . . . . . balanced
Nominalimpedance. . . - . . 150Ohm
Min.terminatingimpedance. . . . . . . . 1000Ohm
Pre-attenuation. . . . . . . . . . . . . . . . . . . 10dB,defeatable
Setting the pre-attenuation and filters
Preattenuation (S1)
PadswitchSI is usedto attenuate micro-
phonesensitivityby10dB.Thisfeature
shouldbeusedonlywhenthe mlcrophone
Inputat downlineequipmentisnot
designedto handlethe highmicrophone
outputvoltagesgeneratedat highsound
pressurelevels(whIchwouldresultIn
distortionl-
Settingtheroll-offfilter (S2)
TheMKH70P48 isequippedwitha switch-
ableroll-offfiltertoavoidlow-frequency
interferencedueto handlingor windnOlse.
Low-cutfilter. .
Roll-offfilter
Presencefilter. . . .
Powersupply
Supplyvoltage
Supplycurrent
Dimensionsinmm . .
Weight. . .
Standardequipment.
Valuesinbracketswith padswitchinposition- 10dB.
SubJectto alterations-
Theeffectof theroll-offfilter on the
frequencyresponseISshownon page14.
RegardlessofthesettingofswitchS2,
a cut-offfilter iseffectivebelow70 Hz
to suppressdisturbances
dueto low-
frequencyairor bodynoises(subsonic
signals).
Settingthe presencefilter (S3)
Thepresencefilterservesfor eompensa-
tion oflossesat the highfrequencyend
dueto propagationlossandwlndscreens.
Theeffeetofthe filteronthe frequency
responseistshownon page14.
12
. 18dBI oeLbelow50 Hz
.additional 3 dBattenuationat 70 Hz
. 5 dBemphaslsat 10kHz
. . . . phantomsupply'asperDIN45596
. 44to 52V
.2 mA
. 25 i/Jx 410
. . . . approx.180g
. . . . . 1MKH70P48 microphone
13
r