644
Common name: Electro-Voice 644
Production Status: Discontinued / Vintage
The 644 Sound Spot is a cardioid dynamic microphone with distributed front opening design providing very high directivity. Cancellation of rear sound above 700 Hz exceeds 20 dB. It has very low sensitivity to wind noise and mechanical shock. The EV644 capsule employs an exclusive Acoustalloy diaphragm. It features an on/off switch and can be operated with either high impedance or low impedance loads by changing terminals at the QC4M connector. It has an integrated swivelling stand mount. It is finished in non-reflecting grey. Includes 15′, two-conductor, synthetic, rubber-jacketed cable.
Electrical Characteristics
Frequency Response
40Hz - 12 kHz
Output Sensitivity
2.23 mV/Pa
Max SPL
Max SPL, THD:
Self Noise (CCIR)
dB
Self Noise (DIN/IEC)
dB-A
Output Impedance
150Ω
Recommended Load
Powering
Supply Current
mA
Alternative Powering
Switchable Options
Pad
Filter/EQ
Physical Characteristics
Connector
XLR-3M
Connector notes
Available Colours
Non-reflecting grey
Weight
907 g
Length
404.6 mm
Min diameter width
Max diameter
50.8 mm
Depth
Accessories
Included
15', two-conductor, synthetic, rubber-jacketed cable
Optional
Model 418 desk stand