Superlux CMH8CH User Manual

J U S T P L A Y I T
CMH8CH 8B CMH8CH 8B H H 8A 8A H H
Large-diaphragm
Condenser Microphone
User Guide
G O A N G - F A N N C O . , L T D .
2007, SUPERLUX I
LB100H8AH01EN (Rev. 1)
Specifications
Type
Max. SPL
Condenser Microphone
CMH8AH: 132dB SPL
CMH8BH: 142dB SPL
Element
CMH8CH:
Pressure gradient,
Cardioid: 138dB SPL
FET preamplifier
Figure 8: 142dB SPL
Omni.: 142dB SPL
Polar pattern
≦
(THD 0.5% 1kHz)
CMH8AH/CMH8BH:
Dynamic range
Cardioid (Figure 1)
CMH8CH: Cardioid / ٨Figur /
CMH8AH: 114dB
Omnidirectional (Figure 2)
CMH8BH/CMH8CH: 124dB
Frequency response
Power supply
30 to 20,000 Hz (Figure 3) 48 Vdc phantom power
Sensitivity
Current consumption
(at 1,000 Hz Open Circuit Voltage)
CMH8AH/CMH8BH: 2.7mA
CMH8AH/CMH8BH:
CMH8CH: 4mA
-34dBV/Pa (20mV/Pa)
CMH8CH: Polarity
Cardioid: -31dBV/Pa (28mV/Pa)
Pin 2 output positive voltage
Figure 8: -35dBV/Pa (17mV/Pa) (related to pin 3) when diaphragm
receives positive pressure.
Omni.: -35dBV/Pa (17mV/Pa)
(Diaphragm moving inward)
1Pa=94dB SPL
Connector
Rated impedance
3 pin male XLR type
200Ω
Finish
Minimum load impedance
Black leather finish
1000Ω
Dimensions
Equivalent noise level
Φ54.0mm(2.13in.) X 209.0mm
(A-weighted)
(8.23in.) (Figure 4)
CMH8AH/CMH8BH: 18dB
CMH8CH:
Net weight
Cardioid: 14dB
CMH8AH/CMH8BH: 550g(19.40oz.)
Figure 8: 18dB
CMH8CH: 570g(20.11oz.)
Omni.: 18dB
nc.
(1 k Ω load)
250 Hz
500 Hz
1000 Hz
CMH8AH/H8BH
TYPICAL POLAR PATTERN
at 1 k Ω Load
250 Hz
500 Hz
1000 Hz
CARDIOID TYPICAL POLAR PATTERN
200 Hz
1000 Hz
10000 Hz
CMH8CH FIGURE 8
TYPICAL POLAR PATTERN
dB
10
0
-10
-20
20 50 100 200
FREQUENCY IN Hz
dB
Cardioid
10
off-Roll
-10dB
0
-10
-20
20 50 100 200
FREQUENCY IN Hz
dB
Cardioid
Fig.8
Omni.
10
Roll-off
-10dB
0
-10
-20
20 50 100 200
FREQUENCY IN Hz
TYPICAL FREQUENCY RESPONSE (Figure 3)
2000 Hz
4000 Hz
8000 Hz
(F igure 1 )
2000 Hz
4000 Hz
8000 Hz
CMH8CH
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
1000 Hz 8000 Hz reinforcement, etc.
2000 Hz
4000 Hz 16000 Hz
CMH8CH OMNI.
Features
TYPICAL POLAR PATTERN
(Figure 2) Large-diaphragm capsule of gold-evaporated membrane 1" in
!
CM-H8AH
diameter and 3 m in thickness.
! Low-noise transformer circuit.
! Wide frequency response.
! Blue LED light on the front indicating the working condition of the
500 1000 2000 5000 10000 20000 Hz
phantom power supply.
CM-H8BH
! CMH8AH
! CMH8BH
! CMH8CH
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
500 1000 2000 5000 10000 20000 Hz
omni.
CM-H8CH
polar patterns
500 1000 2000 5000 10000 20000 Hz
(Figure 4)
μ
has an internal low-cut filter switch.
has an external switch for low-cut filter and -10dB roll-off.
has a dual-membrane capsule with an external switch for
Converting
Low Frequency
Off-Roll -10dB PAD
H8CH H8BH H8CH H8BH H8CH