The BLM4060 Boundary Layer Microphone is ideal for use in boardrooms, conference facilities, courtrooms, teleconferencing and other applications where excellent vocal pickup is required.
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 microphoneelement is a prepolarized omnidirectional miniature condensermicrophone 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 microphoneelement 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 dBgain of direct sound and only 3 dBgain 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.
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
Equiv. noiselevel ITU-R BS.468-4: Typ. 35 dB (max. 38 dB)
S/N ratio, re. 1 kHz at 1 Pa (94 dBSPL): 71 dB(A)
Total harmonicdistortion (THD): < 1 % up to 123 dBSPLpeak, < 1 % up to 120 dBSPLRMS 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 45C (14 to 113 F)
Boundary & Tabletop Microphones
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