MICROPHONES
PREAMPLIFIERS
ACCESSORIES
CALIBRATION
SPECIAL
MV:220A 1/2” Prepolarised Microphone
Preamplifier
Overview
The MV:220A can be used with the Cirrus Research
The MV:220A ½-inch Preamplifier is a general
Class+ Microphone Capsules including:
purpose preamplifier suitable for use with
• MK:224 Class 1
prepolarised microphone capsules.
• MK:226 Class 1
• MK:216 Class 2
It is a small unit with a slimline profile and is
• MK:215 Class 2
powered via the coxaial BNC-type connector.
• MK:4052H Class 2 High Level
Power is from a suitable constant-current source
of typically 4mA with a power supply excitation
voltage of between 15v and 24v DC.
The frequency response (-3dB points) of the
MV:220A are 2.6Hz to 150kHz.
Specifications
Frequency Response
-0.1dB at 16Hz and 20kHz
-3dB at 2.6Hz and 150kHz
Input Impedance
>1200 MΩ
Output Impedance:
50 Ohms
Gain
-14.8dB (5.5x) with 18pF Microphone Capsule
Noise Floor
A-weighted: < 45dB
Dimensions:
Length: 98mm
Diameter:Ø13mm
Power Supply
Excitation Voltage: Constant Current Excitation: Output bias voltage: Polarisation Voltage
None
Output Voltage
Maximum output signal voltage: 1V RMS (2.82V Pk-Pk)
Maximum signal input (with 40mV/Pa mic.capsule): 140dB
Maximum Cable Length
100 meters
Connection
Input: Output: 1/2” Microphone 60 UNS
Coaxial BNC
Startup stabilisation time
15 seconds
Temperature
Operation: -10oCto +50oC
Storage: -20oC to +60oC
Acoustic House
Bridlington Road
Hunmanby
North Yorkshire
YO14 0PH
United Kingdom
MV220A/03/17/r2EN
T: 0845 230 2434 (UK)
+44 1723 891655
F: +44 1723 891742
E: sales@cirrusresearch.co.uk
W: www.cirrusresearch.co.uk
17 to 25 VDC
4mA
10VDC
Member
BRITISH SAFETY INDUSTRY FEDERATION
Registered
BRITISH
SAFETY
COUNCIL
Safety
Supplier
TM