77

Common name: Astatic 77

Production Status: Discontinued / Vintage

The 77 is a rugged dynamic cardioid microphone equipped with a DuPont Mylar® diaphragm and Astatic sintered bronze acoustic phasing technology providing excellent front to back pickup differential. The cartridge element is suspended in rubber like material to minimise vibrations while the Mylar® diaphragm is insensitive to moisture, resistant to solvents and unaffected by many acids. The swivel heads allows up to 90º of swing an also houses a lockable on/off switch. Impedance can be slected between high, medium and low via a three position switch. The 77 is ideal for broadcasting, recording and industrial sound installation applications. Includes 20 ft heavy-duty 3 wire cable.

Electrical Characteristics

Frequency Response
30Hz - 15 kHz
Output Sensitivity
2.23 mV/Pa
Max SPL
Max SPL, THD:
Self Noise (CCIR)
dB
Self Noise (DIN/IEC)
dB-A
Output Impedance
30/50/150/250/40000Ω
Recommended Load
Powering
Supply Current
mA
Alternative Powering

Switchable Options

Pad
Filter/EQ

Physical Characteristics

Connector
Amphenol 91-MC3M
Connector notes
Available Colours
Chrome. Brushed gold plating (77 Gold)
Weight
1077 g
Length
203.2 mm
Min diameter width
Max diameter
53.97 mm
Depth
68.26mm

Accessories

Included
20 ft heavy-duty 3 wire cable.
Optional