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INSTALLATION AND 

OPERATING INSTRUCTIONS

 

for the

 

ALTEC M11 MICROPHONE 

SYSTEMS

 

featuring the

 

 

ALTEC 21B MINIATURE 

CONDENSER MICROPHONE

 

 

Содержание 21B

Страница 1: ...INSTALLATION AND OPERATING INSTRUCTIONS for the ALTEC M11 MICROPHONE SYSTEMS featuring the ALTEC 21B MINIATURE CONDENSER MICROPHONE...

Страница 2: ...icrophone 21B Microphone 150A Base 150A Base P518A Power Supply P518A Power Supply 152A Cable Set 153A Cable Set M11B with 152A Cable Set M11B with 153A Cable Set 21B Microphone 21B Microphone 150A Ba...

Страница 3: ...1B Microphone is shipped in position on the 150A Base Attachment is by threads on the outside of the shell of the Microphone Be sure the Microphone is screwed tightly into position Connection is made...

Страница 4: ...cal breakdown between these parts The function of the inner shield which surrounds the center terminal is described in the discussion of the 150A Base THE 150A MICROPHONE BASE The 150A Microphone Base...

Страница 5: ...erefore the bulk at the microphone is reduced to the minimum consistent with reliable tube operation and with esthetic and operational considerations The Microphone Base may be separated by as much as...

Страница 6: ...octave being down approximately 6 DB at the frequen cies indicated 20 cycles 40 cycles or 120 cycles The 40 cycle position gives low frequency response at least equivalent to the best commercial micro...

Страница 7: ...placing the outer shell note that the nameplate should be opposite the latch on the Cannon connecter Do not attempt to make any adjustments or repairs to the 2 l B Microphone If the rear insulated por...

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