Neumann.Berlin KM 64 User's Manual
Contents
1. Stray voltage WA S S SN V EX Weighted noise voltage CDL 4D SD Maximum sound pressure for 5 distortion at 40 cps keps and 5 Tr Gain of microphone amplifier at 1 keps Pressure gradient transducer cardioid 40 18 000 cps app 0 9 mV ub across 1 app 10 dB gt 1 000 250 a 200 50 20 22 pF 15 uV across 1 ko IA D pV across 1 ko 29 phon 200 ub 420 dB 650 ub 130 dB with overload protection dB above 2 107 ub app 5 1 x AC 701k T 2402 120 g 21 mm 0 length 124 mm TECHNICAL Microphone U 6 4 Acoustical operation Directional characteristic Frequency Output 1 1 id Switchable attenuation Electrical load resistance Electrical source resistance Capacity of Stray 1 8 Weighted noise voltage DIN 45 405 Maximum sound pressure for 5 distortion at 40 eps 1 keps and 5 keps Gain of microphone DETAILS 9 99 99 9 amplifier at 1 RODS seta 9 e 9 e Pressure gradient transducer cardioid 40 18 000 cps app 1 4 mV ub across 1 ko app 10 dB gt2. bed rev y y e RU S Power consumption DC output voltages Sic Noise 1 e Neon pilot i81pesescsu 90 Dimensions iU cd RN WelBpHUsuau ux UR Maximum length of cable CONNECTORS vd vo wwe Power Supply Unit N 6 Mains 1 Power Consumptions lt lt DC output voltages js Noise 1 Neon pilot lamp TF 8 44 5S Maximum length of cable CONMMCCCOMS gos e LACER E DETAILS 117 127 220 240 V 50 60 eps 50 mA mt for 220 240 V 80 mA t for 117 127 V app 11 VA 4 V 100 mA 120 V 0 5 mA 8 uV 10 resp Rafi No 2855 110 V 220 x 100 x 120 mm app 2 2 kg 40 m T 3403 and T 2084 117 127 220 240 V 50 60 cps DO mA mt for 220 240 V 80 mA t for 117 127 V app 10 VA 6 2 V 135 mA 120 V 0 9 mA 0 4 mV 0 7 mV resp 0501 DZ yellow 220 V 220 x 100 x 120 mm app 1 8 kg 40 m T 35365 and T 5084 TECHNICAL Microphone K M 6 4 DETAILS Acoustical operation Directional charaeteristic 5 55 D Switchable attenuation Electrical load resistance Electrical source e 9 Capacity of 1
3. CONDENSER MICROPHONES 64 and U 64 KM 64 U 64 910 02 01 The miniature condenser micro phones KM 64 and 64 are the latest NEUMANN condenser micro phones They differ from the well known standard range of miniature microphones in the shape of the microphone head The directional characteristic is cardioid Special features of these microphones are the independance of the directional characteristic from frequency and a response extended to the high frequency end The minia ture construction makes them particularly suitable for un obtrusive usein film and tele vision studios BASIC FEATURES The are equipped with a newly developed capsule which is pressure gradient transducer with acoustical phase shift element The dia phragm is made of temperature Stable polyester It is vacuum gold plated The frequency response of the microphones extends from 40 cps to 18 keps A slight drop at 40 cps compensates for the bass rise at close range typical for all pressure gradient microphones At the high frequency end the response shows a rise of approximately 2 dB o 88988 200000 6080 G 16670020808J08 i a e Sah eh Nt AI a i a PH M 505 gan 66 Printed in Germany In the development of these new microphones particular attention was paid to the independance of th
4. 1 000 250 200 50 20 9 22 pF 47 4 ko app 6 pV across 1 29 phon 200 ub 2 120 dB 650 ub 150 with overload protection dB above 2 10 ub app T 2 5 1 Nuvistor 7586 T 5560 T 3361 120 g 21 mm length 112 mm gt EE SSR Ree SE Re gas eo 2 m e EE Pl REA E DERI NIU SI EE 006 net es ee ku p sn qe RR CRUEL HHHH o Aun bu d DEL D DULL TTA TNI d we e p in tn 64 064 8 kHz 16 kHz 180 Nicht eingezeichnete Frequenzkurven 125 Hz fallen mit der 1TkHz Kurve zusammen 250Hz
5. 56 The standard accessories for these miniature microphones can also be used with the KM 64 The RF proof type is KM 264 which matches the accessories for the other RF proof miniature microphones The difference between the U 64 and the KM 64 lies in the fact that the U 64 is equipped witha nuvistor The nuvistor is obtain able everywhere and can be easily replaced as it has a plug in socket avoid overloading the microphone amplifier when recording very loud solo instruments at close range a 10 dB attenuator can be Switched in between the capsule and the microphone valve This enables the highest sound levels that are likely to be met practice to be recorded without distortion ML ES a Lc n orani diode Sof cod ee aE om cal d MES uf oca ee AEN MEE Zt SUR OG ON EE ECT cu COM M a Se o RR STANDARD ACCESSORIES FOR KM 64 The KM 64 is equipped witha 6 pole Tuchel connector type T 3402 The microphone is connected to the supply unit by means of the extension cable KC 1 or the microphone cable KC 2 which has a Swivel connecting stud for stand
6. mounting This microphone can be supplied from the portable power supply unit NKMa from the plug in power supply unit N 52 from the battery supply unit BB 12 The versatile portable power supply unit NN 48b and battery supply unit 50 may also be used Power Supply Unit NkMa The portable power supply unit NKMais suitable for supplying one microphone KM 64 from the mains The heater and HT voltages are stabilised The output voltage from the microphone is obtained on a 5 pole Tuchel connector type 3081 The unit is connected to the mains by means of a mains connector according to DIN 49 495 Power Supply Unit 52 Technical details of the power supply unit N 52 are the same as those of the NKMa but it is constructed as a plug in unit for rack mounting Ten of these units may be housed side by side in plug in shelf type 167 10 for DIN racks and nine can be housed in a plug in shelf type S 167 9 for 19 racks The cir cuit is assembled on printed circuit card which is easily re placed The heater and HT voltages are stabilised Battery Supply Unit BB 12 The battery supply unit BB 12 has a base plate about the size of a postcard Three DEAC accumulators RS 4 5 or leakproof minia ture single cells may be used A transistorised DC converter pro vides the stabilised voltage from the battery voltage The operating time with DEAC accumulators is approximately ten hours STANDARD ACCESSORIES FOR U 6 4
7. The microphone U 64 is equipped with a 5 pole Tuchel connector type 5562 It is connected to the supply units by means of an extension cable type UC lor the microphone cable type UC 2 which has a swivel connecting stud for stand mounting The U 64 can be fed from a portable power supply unit N 6 and the portable power supply unit N 62 can supply two U 64 For rack mounting the plug in power supply unit N 6k may be used and the power supply units N 66 and N 66k can supply six microphones type U 64 Power Supply Unit N 6 The portable power supply unit N 6is intended to Supply one micro phone type U 64 from the AC mains The heater voltage is stabi lised The output voltage of the microphone is obtainedon a 5 1 Tuchel connector type 3081 The unit is connected to the mains by means of a mains connector according to DIN 49 495 Power Supply Unit N 62 This portable power supply unit is the same size as the N 6 but 1 can supply two microphones U 64 Even in case of a short cir cuit in one supply circuit the other microphone will continue to operate The cross talk between the two systems is less than 120 dB Power Supply Unit N 66k The power supply unit 66k is suitable for mounting in DIN or 19 racks It can supply six microphones type U 64 regards short circuits and cross talk it has the same characteristics ag the 62 MF 1 und KC 2 TECHNICAL Power Supply Unit Mains 1
8. e directional characteristic from frequency The frequency response curves an angle of in cidence of X 1559 run nearly parallel The attenuation at 135 is 15 dB in the range from 100 eps to 18 keps If therefore the Sound source moves in a three quarters circle around the micro phone the level will vary but the tone quality will remain con stant This would occur if for instance an actor changes his position during recording or if people during an interview talk into the microphone from different directions A further applica tion is in the post sync studio where changes in the tone quality may occur due to the speaker throwing his voice in a different direction when he is reading than when he is looking at the screen Both microphones contain the capsule head and a complete ampli fier stage The output transformer is astatically wound to avoid hum pick up The microphones have an internal resistance of 200 o but be connected for 50 o Microphones which have been con nected for 20 o before leaving the factory are marked with a red dot beside the serial number The cardinal direction of the capsuleis in line with the axis of the microphone Consequently the microphones must be pointed to wards the sound source The microphone KM 64 is equipped with the well proven low noise Telefunken Triode 701k It can consequently be connected in the same way as the well known NEUMANN miniature microphones KM 53 54 and KM
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