C720
Primary use:
Type:
Polar patterns:
Common name: Josephson Engineering C720
Production Status: Discontinued / Vintage
The C720 is a large diaphragm studio microphone with a dual-sided capsule. The polar pattern is fully variable between omni and figure of eight by using the separate outputs and mixing them appropriately. The capsule is protected by an expanded metal foam which avoids internal acoustic reflecting surfaces. The circuitry is Class A FET cascode and the output uses a custom wound Lundahl transformer. The internal high voltage polarisation avoids using a switching oscillator to give very low noise. Both channels require phantom power.
Electrical Characteristics
Frequency Response
20Hz - 20 kHz
Output Sensitivity
1.7 mV/Pa
Max SPL
136
Max SPL, THD:
Self Noise (CCIR)
dB
Self Noise (DIN/IEC)
15 dB-A
Output Impedance
200Ω
Recommended Load
1kΩ
Powering
Supply Current
5 mA
Alternative Powering
Switchable Options
Pad
Filter/EQ
Physical Characteristics
Connector
XLR-7M
Connector notes
Available Colours
Weight
1200 g
Length
261 mm
Min diameter width
Max diameter
63 mm
Depth
Accessories
Included
Optional