DATA SHEET
N o .
1 2 9
SPECIFICATIONS
Voltage Sensitivity:
2.2 millivolts r.m.s. per bar at the
end of a 7-foot cable across 1 to 5
megohms at 400 cycles. This i
S
equivalent to 53 db below 1 volt per bar at the terminals
of the 7-foot cable.
Internal Output
Impedance :
Equivalent to a 1,500 micro-micro-
farad condenser.
Recommended Load
Impedance :
1 to 5 megohms.
708A
Height, Overall (a)*. . . . . . . . .
4"
Height, Case
(h)+. . . . . . . . .
2-l/2"
Width
(b)*. . . . . . . . .
2-l/2"
Thickness
(c)*. . . . . . . . .
4-7/8"
Finish . . . . . . . . . . . . . . . .
Irridesc.Gray Chrome
Net Weight . . . . . . . . . . . . . .
1 Lb.
Shipping Weight . . . . . . . . . . .
2-1/4 Lb.
Code Word (7’ Cable) . . . . . . . . .
RUDUM
List Price . . . . . . . . . . . . . .
$17.50
*
See Fig. D.
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 In-
structions 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 un-
der patents of the Brush Development
Company.
FREQUENCY CHARACTERISTIC OF MODEL 708A
FIG. B. FREQUENCY-CYCLES PER SECOND
