DPA BLM4060 (DPABLM4060 DPA-BLM4060 DPA/BLM4060) Boundary Layer 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.
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.
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.
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.
Specifications for BLM4060 Boundary Layer Microphone
|Pre-polarized condenser element|
|20 Hz – 14 kHz (with a 7 dB soft boost at 8 kHz)|
|20 mV/Pa at 1 kHz; -34 dB re. 1 V/Pa|
|Typ. 23 dB(A) re. 20 µPa (max. 26 dB)|
|Typ. 35 dB (max. 38 dB)|
|< 1 % up to 123 dB SPL peak, < 1 % up to 120 dB SPL RMS sine|
|Typ. 100 dB|
|From MicroDot: 30 – 40 ohm. From DAD6001: 100 ohm.|
|Up to 300 m (984 ft)|
|Min. 5 V – max. 50 V through DPA adapter.|
|240 g (8.5 oz) excl. cable|
|100 mm (4 in)|
|Height: 12 mm (0.5 in)|
|3 m (10 ft)|
|1.6 mm (0.06 in)|
|Black rubber disc mounted in stainless steel base|
|Positively increasing sound pressure produces positive going voltage on MicroDot pin/pin 2 on XLR connector|
|-10 to 45°C (14 to 113° F)|