MK 290
Common name: Microtech Gefell MK 290
Production Status: In production
The MK 290 is a selected pair of 1/2” measuring microphone cartridges for sound intensity probes. The constructive design of the capsule is equal to that of the MK 222. The equalisation of the static air pressure between the inside and outside of the cartridge is achieved by means of a capillary tube, adjusted for infrasonic measurements, rear-vented into the preamplifier. This enables the use of the optional TA 202 dehumidifier. The cartridge uses the international standard thread 60 UNS which ensures compatibility with a wide range of calibration equipment and measurement devices available from many manufacturers. Includes wooden case.
Electrical Characteristics
Frequency Response
0.5Hz - 20 kHz
Output Sensitivity
50 mV/Pa
Max SPL
146
Max SPL, THD:
3
Self Noise (CCIR)
dB
Self Noise (DIN/IEC)
15 dB-A
Output Impedance
-
Recommended Load
Powering
Other
Supply Current
mA
Alternative Powering
Switchable Options
Pad
Filter/EQ
Physical Characteristics
Connector
60 UNS 11.7 mm
Connector notes
Available Colours
Satin nickel.
Weight
9 g
Length
16.4 mm
Min diameter width
Max diameter
12.7 mm
Depth
Accessories
Included
Wooden box. Capsule spacer.
Optional
A 69 adapter for 1/2” microphone capsules to 1/4” preamplifiers. WA 20 angle adapter 1/2”. TA 202 dehumidifier adapter 1/2”. W2 Windscreen. EA 2 Electrostatic actuator. MM-PK-LD Pistonfon.