Owner manual

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CMH8CH 8BH 8AH
User Guide
J U S T P L A Y I T
Large-diaphragm
Condenser Microphone
2007, SUPERLUX I
LB100H8AH01EN (Rev. 1)
nc.
G O A N G - F A N N C O . , L T D .
Specifications
Condenser Microphone
Type
Pressure gradient,
FET preamplifier
Element
CMH8AH/CMH8BH:
Cardioid (Figure 1)
CMH8CH: Cardioid / Figure 8 /
Omnidirectional (Figure 2)
Polar pattern
30 to 20,000 Hz (Figure 3)
Frequency response
Sensitivity
(at 1,000 Hz Open Circuit Voltage)
CMH8AH/CMH8BH:
-34dBV/Pa (20mV/Pa)
CMH8CH:
Cardioid: -31dBV/Pa (28mV/Pa)
Figure 8: -35dBV/Pa (17mV/Pa)
Omni.: -35dBV/Pa (17mV/Pa)
1Pa=94dB SPL
200Ω
Rated impedance
1000Ω
Minimum load impedance
Equivalent noise level
(A-weighted)
CMH8AH/CMH8BH: 18dB
CMH8CH:
Cardioid: 14dB
Figure 8: 18dB
Omni.: 18dB
Dynamic range at 1 kΩ Load
CMH8AH: 114dB
CMH8BH/CMH8CH: 124dB
48 Vdc phantom power
Power supply
Current consumption
CMH8AH/CMH8BH: 2.7mA
CMH8CH: 4mA
Polarity
3 pin male XLR type
Connector
Black leather finish
Finish
Dimensions
Φ54.0mm(2.13in.) X 209.0mm
(8.23in.) (Figure 4)
Net weight
CMH8AH/CMH8BH: 550g(19.40oz.)
CMH8CH: 570g(20.11oz.)
Max. SPL (1 kΩ load)
CMH8AH: 132dB SPL
CMH8BH: 142dB SPL
CMH8CH:
Cardioid: 138dB SPL
Figure 8: 142dB SPL
Omni.: 142dB SPL
(THD≦0.5% 1kHz)
Pin 2 output positive voltage
(related to pin 3) when diaphragm
receives positive pressure.
(Diaphragm moving inward)
2000 Hz
4000 Hz
8000 Hz
250 Hz
500 Hz
1000 Hz
2000 Hz
4000 Hz
8000 Hz
250 Hz
500 Hz
1000 Hz
CMH8CH
CARDIO ID TYPICAL POLAR PATTERN
CMH8CH FIGURE 8
TYPIC AL POLAR PATTERN
CMH8CH OMNI.
TYPIC AL POLAR PATTERN
200 Hz
1000 Hz
10000 Hz
1000 Hz 8000 Hz
16000 Hz
2000 Hz
4000 Hz
(Figure 2)
FREQUENCY IN Hz
RELATIVE RESPONSE IN dB
dB
10
-10
-20
20 50 100 200 500 1000 2000 5000 1000 0 2000 0 Hz
0
CM-H8AH
TYPIC AL FREQUENCY RESPONSE (Fig ure 3)
CM-H8BH
FREQUENCY IN Hz
RELATIVE RESPONSE IN dB
dB
10
-10
-20
20 50 100 200 500 1000 2000 5000 1000 0 2000 0 Hz
0
Car di oi d
Rol l- off
-10 dB
CM-H8CH
FREQUENCY IN Hz
RELATIVE RESPONSE IN dB
dB
10
-10
-20
20 50 100 200 500 1000 2000 5000 1000 0 2000 0 Hz
0
Car di oi d
Fig .8
Omn i.
Rol l- off
-10 dB
CMH8AH/H8BH
TYPICAL POLAR PATTERN igure 1 (F )
-10dB PAD
H8BH H8CH
Low Frequency
Roll-off
H8BH H8CH
Converting
polar patterns
H8CH
Description
CMH8AH/CMH8BH are condenser cardioid microphones with large
diaphragm of 1" in diameter; while CMH8CH features convertible polar
patterns of cardioid, figure-of-8 and omni. Their tailored frequency
response make them ideal candidate for the recording of music program.
They are also suitable for general recording, broadcasting, stage
reinforcement, etc.
! Large-diaphragm capsule of gold-evaporated membrane 1" in
diameter and 3μm in thickness.
! Low-noise transformer circuit.
! Wide frequency response.
! Blue LED light on the front indicating the working condition of the
phantom power supply.
! CMH8AH has an internal low-cut filter switch.
! CMH8BH has an external switch for low-cut filter and -10dB roll-off.
! CMH8CH has a dual-membrane capsule with an external switch for
low-cut filter and -10dB roll-off. At the back of the body, there is a
switch for converting polar patterns among cardioid, figure-of-8 and
omni.
Features
External switch for
CMH8BH/8CH
External switch
only for CMH8CH
Blue LED light
(Figu re 4)