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Output Level
(at 1,000 Hz)
Open Circuit Voltage*
. . . . . . . . . - 77.5 dB (0.13 mV)
Power Level** . . . . . . . . . . . . . . -57.5 dB
*0 dB = 1 volt per microbar
**0 dB = 1 milliwatt per 10 microbars
Phasing
Positive pressure produces positive voltage on pin 2
with respect to pin 3 (see Figure 3)
CARTRIDGE
PROFESSIONAL THREE-PIN
AUDIO CONNECTOR
INTERNAL CONNECTIONS
FIGURE 3
Connector
Professional three-pin audio connector* in
microphone
*Designed to mate with Cannon XL series, Witchcraft A3 (Q.G.) series or
equivalent connector.
Swivel Adapter
Positive action, adjustable through 90° from vertical
to horizontal, suitable for mounting on stand with
5/8”-27 thread
Case
Aluminum and ARMO-DUR
®
with steel mesh screen;
ebony vinyl enamel finish
Dimensions
See Figure 4
OVERALL DIMENSIONS
FIGURE 4
Net Weight
(less cable)
168 grams (6 oz)
Packaged Weight
0.88 kg (1 lb, 15 oz)
ARCHITECTS SPECIFICATIONS
The microphone shall be a moving-coil (dynamic) type
with a frequency response of 50 to 15,000 Hz. The unit
shall have a cardioid polar characteristic. The cancella-
tion at the sides shall be approximately 6 dB, and the
cancellation at the rear shall be greater than 15 dB. The
microphone shall have a rated impedance of 150 ohms
for connection to microphone inputs rated at 19 to 300
ohms. The microphone output shall be -57.5 dB where
0 dB equals 1 milliwatt per 10 microbars.
The microphone shall be provided with a swivel
adapter adjustable through 90° from vertical to horizon-
tal. The microphone swivel adapter shall mount on a
stand having a 5/8”-27 thread. The overall dimensions of
the microphone shall be 140 mm (5-½ in.) in length and
32 mm (1-¼ in.) in diameter.
The microphone shall be the Model SM77 or
equivalent.
FURNISHED ACCESSORY
Swivel Adapter . . . . . . . . . . . . . . . . . . . . . . . . . A25B
OPTIONAL ACCESSORIES
Windscreen
. . . . . . . . . . . . . . . . . . . . .A2WSA-BK
Desk Stand . . . . . . . . . . . . . . . . . . . . . . . . S33B, S39A
Isolation Mount . . . . . . . . . . . . . . . . .A55M, A55HM
Dual Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A25M
Cable:
7.6m (25 ft) . . . . . . . . . . . . . . . . . . . . . . . . C25E
REPLACEMENT PARTS
Cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . R140
Plug Element . . . . . . . . . . . . . . . . . . . . . . . . . .90A1984
GUARANTEE
This Shure product is guaranteed in normal use to be
free from electrical and mechanical defects for a period
of one year from date of purchase. Please retain proof
of purchase date. This guarantee includes all parts and
labor. This guarantee is in lieu of any and all other
guarantees or warranties, express or implied, and there
shall be no recovery for any consequential or incidental
damages.
SHIPPING INSTRUCTIONS
Carefully repack the unit, have it insured, and return it
prepaid to:
Shure Brothers Incorporated
Attention: Service Department
222 Hartrey Avenue
Evanston, Illinois 60202-3696
If outside the United States, return the unit to your
dealer or Authorized Shure Service Center for repair.
The unit will be returned to you prepaid.