Neumann.Berlin KML User's Manual
Contents
1. transistor emitter with 18 VDC output KML emttter receiver Fk special cable KLP with pad N 52a or NN 48b or NKMh or NKMa GEORG NEUMANN GMBH FLECTROAGCUSTIGC BERLIN Gt WEST Printed in Germany2. E ORS WW Estey aede be et ies are Meare ee ee Terminating impedance e0ee es Capsule capdcitance ss vsisioetves sees Linear noise voltage 2 02 Weighted noise voltage DIN 45 405 Equivalent self noise level DIN 45 405 for 18 Volt operation 00 eee S P L for 0 5 THD at 40 Hz 1 kHz and S kilz sus reiris dui e enaA Allowable cable length Gain of microphone amplifier inci SWL or Bosca sche ww ode erw oe ake CONNECTO 36 64 2556 Gwe Se ee aloes ee Seles Special extension cable 005 Operating voltages Current Consumption ccd ua seeded ee xe Battery ss ae se aieka rrr eee ee Bathery lites fat net Moet alee gc aceae GEORG NEUMANN GMBH Printed In Germany ELECTR OACUSTIC KML 910 02 00 approx 0 7 mV ubar approx 1 0 mV ybar lt 100 Q 100 16 000 Hz 200 Q 40 16 000 Hz 2 1000 2 approx 33 pF 6 pV rms measured with BSL or SWL 3 pV rms measured with BSL or SWL 225 dBre 2 1074 ubar 33 dBre2 10 pbar HA 2200 ubar 120 dB re 2 1074 ubar see text 0 2 dB a 8 dB T 3400 1 pin 3 cut off Type KL normal length 33 feet 15 25 Volts 45 Volts BSL 48 52 Volts SWL approx 1 1 mA at 20 Volts 2 x 22 5 Volts according to IEC 15F20 30 hours from BSL battery box gt 1 BERLIN 61 WEST Connection schematic for Lavaliermicrophone KML
3. Temporary Technical Specifications and Instructions LAVALIER MICROPHONE MODEL KML KML 910 02 00 The condenser microphone KML was developed in order to improve pickup conditions of reporters in interview situations masters of ceremonies quizmasters and all situations in which a speaker wearing a lavalier would also like to pick up the person standing directly accross from him But even in applications where it is used as an ordinary lavalier microphone its quality is far superior to non condenser units of this type Beyond that however its very small and unobtrusive size makes it a favorite in TV studios and fish pole use where an extremely small and light weight high quality microphone is required The microphone is equipped with a cardioid capsule whose axis of incidence is not directed directly up at the speaker s mouth but rather straight ahead The person wearing the unit therefore addresses the unit at a 90 degree angle resulting in a 6 dB sensitivity reduction but this without any frequency discrimination as compared with on axis address The person being interviewed on the other hand will speak on axis and for the usual distance from a reporter will be reproduced at the same level as the interviewer This makes it unnecessary for a microphone to be continually passed back and forth between the two speakers The microphone s front facing characteristic results in completely natural sound for the wearer and does not requ
4. en microphone and BSL or SWL then it is permissible to use cable lengths of up to 250 feet behind the BSL or SWL if maximum levels of 200 ubar are anticipated and up to 500 feet if maximum levels of 100 ubar are to be expected For every additional 33 feet of KL cable ahead of the BSL or SWL you must reduce the cable behind these supplies by 120 feet When operating this microphone with a transmitter the microphone s cable may not be signifi canily lengthened since the cable simultaneously acts as an antenna For special purposes an omni directional capsule KK 63 may be mounted on the KML micro phone without any other changes being required When the battery voltage drops in the BSL supply the two 22 5 Volt batteries may be inter changed but only once since one of the batteries only serves the purpose of generating polarization voltage which does not consume any current This produces practically double the battery life as compared with the data given below Technical Data Acoustical operation 0 e cece eee Pressure gradient capsule Directional characteristic 0000e Cardioid FreqUeNeyTGNGEi is i ine taiapa iiai 40 16 000 Hz Frequency response free field linear below 150 Hz steady roll off GEORG NEUMANN GMBH ELECTROACUSTIC gt I BERLIN 61 WEST ac Sensitivity for 18 Volt operation emitter for operation with BSL or SWL Source impedance measured with BS
5. ire the equalization normally recommended for lavalier microphones The microphone is equipped with both a lanyard and a tie clasp with which the unit may be fastened to tie clothing blouse etc to prevent its slipping aside The capsule may be removed simply by unscrewing it The capsule is identical to that used in the U 64 KM 64 and KM 84 microphones its frequency response however has been modified to give a greater roll off at low frequencies which is desirable for speech reproduction Operating and Connection Possibilities The connector pin assignments of the KML microphone assures that this unit may be operated in conjunction with the 18 Volt wireless microphone transmitters which find widespread use in the German broadcasting system It is therefore not compatible with the other 6 pole con nectors of NEUMANN KM microphones The current consumption of the KML is so small approx 1 mA that ue operating life of the 18 Volt pele is not Aen reduced i The microphone may not be plugged into the spole miniature Tuchel connectors vihi are intended for the traditional tube equipped miniature microphones Its plug is therefore coded with a light blue cable ues cw Pin 3 which i is not used in e KML has been cur off The enclosed schematic shows the other connection n possibilities o available a a Operation with any stele oe transmitter even if fot using 18 Volt ee is possible according to B if the very small ba
6. ttery box BSL i is interposed Since only low E Baa levels such as are found i in i dynamic units are l ermissible at th gt input of such Printed in Germany KML 910 02 00 ordered as a model KLP containing this pad may be used The length of this cable allows the BSL to be carried in a nearby coat or trouser pocket Operation may be effected either according to C again via battery box BSL or the micro phone may be connected according to D through the special cylindrical adapter SWL which is equipped with Tuchel chassis connectors front and back and which permits operation from a standard AC power supply used with tube amplifier microphones When ordering indicate which AC supply model is to be used In the SWL the voltages required for operation of the KML microphone are obtained and stabilized from the 120 Volt plate supply of the AC power supplies Both the BSL and SWL furthermore contain a 2 1 transformer since the KML output itself is unbalanced For this reason the cable lengths used between the KML and its supplies BSL or SWL should be kept as short as feasible Only extension cables model KL equipped with light blue cable entry caps may be used for this purpose for the reasons given above The output capabilities of the KML microphone are adversely affected by increasing interconnect cable lengths as a result of increasing cable capacity If normal 33 feet cables KL of 60 pF foot are used betwe
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