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Western Electric 757A

Posted at 2011-03-25 18:35:05

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Western Electric 757A Loudspeaker utilizes two Loudspeaker and a 
frequency dividing nework. The low frequency Loudspeaker is the Western 
Electric 728B which has been widely acclaimed for its unusual "presence" in 
reproduction. The high frequency Loudspeaker is a713C Receier used in 
conjuction with a newly designed cast aluminum sectoral horn (KS-12027) The 
sectoral partitioning avoids reflections in the horn column The horizontal sound 
distribution is 90 degrees. A suitable network is used to divide the audio 
input to the Loudspeaker A control is incorporated as a part of the nework. it 
is pre-set at the factory for optimum performance;&nbsp;&nbsp;readjustment can 
be made when necessary to compensate for unusual acoustical conditions. The 
attenuator controls the over-all input to the high frequency receiver in four 
steps of approximately one bd each, and is operated by means of a slotted screw 
in the rear of the cabinet. The 757A is furnished in a utility can be mounted 
in the walls of broadcast station control rooms, or it can be readily refinished 
(except for the acoustic material on the front) to blend into the architectural 
treatment of existing installations. Where the decorative requirements make it 
desirable the utilitv cabinet can be easily mounted within a piece of furniture 
harmonizing with the other appointments. Frequency 
Response&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
60 to 15.000 cycles Coverage 
Angle&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
90" horizontal : 90" vertical Power 
Handling&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
30 Watts Input 
Impedance&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
4 Ohms(dividing 
network) Cabinet&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Acoustically 
treated front.remainder of cabinet&nbsp;&nbsp;gray finish 
 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
which can be refinished to blend with individual 
installations. dimensions&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
20" hi . 30 1/2 wi . 13 3/4 
deep weight&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;82 
pounds

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