Fat Head II Active-Passive

Common name: Cascade Microphones Fat Head II Active/Passive

Production Status: In production

The Cascade Fat Head II ActivePassive ribbon microphone allows the user to have the option to switch between either mode with a simple flick of an internal switch. The Active mode requires phantom power and adds up to 20db of gain. The Fat Head II Active-Passive uses a very low noise differential amplifier circuit to provide high gain while keeping the noise level low. The active devices in the mic are factory matched for minimum distortion. The active portion of the Fathead II Active-Passive ribbon microphone is a carefully adjusted differential cascade JFET amplifier where the phantom power supply 6K81 current limiting resistors are used as the cascode stage drain load resistors. After the cascode amplifier the ribbon is interfaced through a 1:37 Lundahl LL2913 transformer. The switch provides either the transformer output signal directly or the further active amplified signal to the XLR connector on the mic. The Fat Head II Active-Passive comes with a premium suspension mount, a padded storage pouch and aluminium case.

Electrical Characteristics

Frequency Response
50Hz - 10 kHz
Output Sensitivity
1.58 mV/Pa
Max SPL
135
Max SPL, THD:
1
Self Noise (CCIR)
dB
Self Noise (DIN/IEC)
dB-A
Output Impedance
200Ω
Recommended Load
1kΩ
Powering
Supply Current
mA
Alternative Powering

Switchable Options

Pad
Filter/EQ

Physical Characteristics

Connector
XLR-3M
Connector notes
Available Colours
Black. Brown.
Weight
Length
165 mm
Min diameter width
25 mm
Max diameter
76 mm
Depth

Accessories

Included
Premium suspension mount. Padded storage pouch. Aluminium case.
Optional