No. 139 DATA SHEET
SPECIFICATIONS
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Voltage |
Sensitivity: |
2.2 millivolts r.m.s. per bar at the |
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end of a 7-foot cable across 1 to 5 |
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megohms at 400 cycles. This is |
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equivalent |
to 53 |
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below 1 volt |
per |
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bar at |
the terminals |
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of the 7-foot cable. |
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Internal |
Output |
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Impedance: Equivalent |
to |
a 1,500 |
micro-micro- |
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Recommended |
Load |
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farad condenser. |
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Impedance: 1 to 5 megohms. |
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M o d e l |
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708S |
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Height, |
Overall |
(a)*. |
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4" |
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Height, |
Case |
(h)*. |
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2-1/2" |
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Width |
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(b)*. |
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2-1/2" |
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Thickness |
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(c)*. |
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4-7/8" |
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Finish. . |
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Irridesc. Gray |
Chrome |
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Net Weight. |
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1 Lb. |
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Shipping |
Weight . |
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2-1/4 |
Lb. |
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Code Word (7' Cable). |
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RUPOC |
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* See Fig. D. |
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GUARANTEE: Each microphone is guaranteed to be free from electrical and mechanical defects for a period of one year from date of
shipment from the factory, provided all instructions are complied with fully. In case of damage, return the microphone to the factory for repairs. Our guarantee is voided if the microphone case is opened.
LICENSE NOTICE: Shure patents pending. Licensed under patents of the Brush Development Compa-
ny.
FIG. B--FREQUENCY CHARACTERISTIC OF MODEL 708S