|
|
| |
BLM-4060
Boundary Layer Microphone
|
| |
Product Code:BLM4060
 |
Model:BLM-4060
Miniature Microphone
The BLM4060 Boundary Layer
Microphone is ideal for use in
boardrooms, conference facilities, courtrooms, teleconferencing
and other applications where excellent vocal pickup is required. |
|
| |
|
|
| |
|
|
|
|
BLM4060
Boundary Layer Microphone
-
Ideal
for use in boardrooms, conference facilities,
courtrooms, teleconferencing
-
optimized to boost speech intelligibility
-
works
with a wide range of connection adapters and power
supplies
Microphone
The BLM4060 is a transducer designed to work under
optimum conditions when placed on a tabletop, but it
also performs well on any other hard, flat surface that
reflects sound. The microphone element is a prepolarized
omnidirectional miniature condenser microphone with a
5.4 mm (0.2 in) vertical diaphragm specially designed
for maximum performance. The microphone body consists of
a centre rubber disc that holds the microphone element
mounted in an elegant stainless steel base. The BLM4060
has a 3 m (10 ft) cable.
Position
The BLM4060 can be very easily placed in essentially any
position on the surface, even close to the edge (See
graphs & more). Users will benefit from the special
characteristics of the surrounding sound field on which
the BLM4060 is mounted: a 6 dB gain of direct sound and
only 3 dB gain of the diffuse sound. Therefore, the
sound captured has both a greater clarity - especially
at high frequencies - and speech intelligibility
compared to sound captured above the surface.
Accessories
A wide range of connection adapters and power supplies
makes it possible to use the BLM4060 with any microphone
input. It is delivered with a
DAD6001 adapter. |
|
General Specifications |
|
Directional characteristics: |
Omnidirectional,
hemisphere |
|
Principle of operation: |
Pressure |
|
Cartridge type: |
Pre-polarized condenser
element |
|
Frequency range, ± 2 dB: |
20 Hz – 14 kHz (with 7 a
dB soft boost at 8 kHz) |
|
Sensitivity, nominal, ±3 dB: |
20 mV/Pa at 1 kHz; -34 dB
re. 1 V/Pa |
|
Equivalent noise level A-weighted: |
Typ. 23 dB(A) re. 20 µPa
(max. 26 dB) |
|
Equiv. noise level ITU-R BS.468-4: |
Typ. 35 dB (max. 38 dB) |
|
S/N ratio, re. 1 kHz at 1 Pa (94 dB SPL): |
71 dB(A) |
|
Total harmonic distortion (THD): |
< 1 % up to 123 dB SPL
peak, < 1 % up to 120 dB SPL RMS sine |
|
Dynamic range: |
Typ. 100 dB |
|
Max. SPL, peak before clipping: |
134 dB |
|
Output impedance: |
From MicroDot: 30 – 40
ohm. From DAD6001: 100 ohm. |
|
Cable drive capability: |
Up to 300 m (984 ft) |
|
Power supply: |
For wireless systems: Min.
5 V – max. 50 V through DPA adapter. With DAD6011-BC/DAD6024/DAD4099: 48
V phantom power ±4 V for full performance. |
|
Connector: |
MicroDot/XLR 3-pin |
|
Microphone weight: |
240 g (8.5 oz) excl. cable |
|
Microphone diameter: |
100 mm (4 in) |
|
Microphone height: |
Height: 12 mm (0.5 in) |
|
Cable length: |
3 m (10 ft) |
|
Cable color: |
Black |
|
Cable diameter: |
1.6 mm (0.06 in) |
|
Finish: |
Black rubber disc mounted
in stainless steel base |
|
Polarity: |
Positively increasing
sound pressure produces positive going voltage on MicroDot pin/pin 2 on
XLR connector |
|
Operating temperature range: |
-10 to 45°C (14 to 113° F) |
|
| |
|
|
|
|
