664A

Type:

Polar patterns:

Common name: Electro-Voice 664A

Production Status: Discontinued / Vintage

The 664A is a cardioid dynamic microphone with a single moving element designed for public address applications. It it also well suited for home and semi-professional recording applications and sound reinforcement systems. Its cardioid polar response is achieved through three sound entrances located in the back of the diaphragm. This arrangement also provides high resistance to mechanical shock and a lack of proximity effect. The head of the microphone has a pop-proof wire mesh grille to minimise plosives, breath and wind noise. The capsule diaphragm employs an exclusive ElectroVoice non metallic Acoustalloy providing a smooth response over a wide frequency range while being immune to high humidity, corrosion and mechanical shocks. It features an integrated swivelling stand mount adapter. The case is made of pressure cast zinc and the stud houses both an on/off switch and a lockable impedance selector. Includes stand coupler and 15 ft. two-conductor, shielded cable. The microphone was available in satin chrome or non-reflecting grey.

Electrical Characteristics

Frequency Response
90Hz - 13 kHz
Output Sensitivity
1.58 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
Satin chrome
Weight
520 g
Length
181 mm
Min diameter width
Max diameter
38.1 mm
Depth

Accessories

Included
Stand coupler and 15 ft. two-conductor, shielded cable
Optional