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Boundary-layer Microphone
The LD Systems BM1 is an electret condenser microphone with a hemispherical directional characteristic.
For micing upright and grand pianos on stage or in the studio. Additional applications in the area of conference technology, transmission of roundtable discussions and theatrical performances.
Product type
Microphones
Type
Installations
Frequency response
50 - 20000 Hz
Directivity
half ball
Nominal impedance
250 Ohm(s)
Max. SPL (1% THD @ 1kHz)
135 dB
Phantom power requierements
48 V
Microphone input
XLR (3-pin)
Width
27 mm
Height
74.5 mm
Diameter
93.5 mm
Accessories (included)
cables (Mini-XLR / XLR, 6 m)
Weight
0,345 kg
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The new Engineered Sound.
This low-profile omnidirectional condenser boundary microphone is designed for clear, highly intelligible sound reinforcement, professional recording and teleconferencing in table-, ceiling-, or panel-mount applications. The microphone is equipped with a self-contained power module with an XLRM-type output connector, eliminating the need for an external power module. The microphone offers unsurpassed immunity from radio frequency interference thanks to Audio-Technica's UniGuard® innovations. Protected by a rugged all-metal case with a two-layer steel mesh grille, the microphone has a 360º pickup angle, and is available in two colors: black (ES945) and white (ES945W).
- Designed for surface-mount applications such as high-quality sound reinforcement, professional recording and teleconferencing
- Low-profile element provides uniform omnidirectional polar pattern with 360º acceptance angle
- Mounts unobtrusively in table-tops, ceilings and wall panels
- Self-contained power module with XLRM-type output connector
- Rugged all-metal case with a two-layer steel mesh grille
- Isolators provide mechanical dampening of mounting-surface vibration
- Requires 11V to 52V DC phantom power
- UniGuard® RFI-shielding technology offers outstanding rejection of radio frequency interference (RFI)
- Available in two colors: black (ES945) and white (ES945W)
- RoHS compliant-free from all substances specified in the EU directive on hazardous substances
- Element: Fixed-charge back plate, permanently polarized condenser
- Polar Pattern: Omnidirectional
- Frequency Response: 40-18,000 Hz
- Open Circuit Sensitivity: -42 dB (7.9 mV) re 1V at 1 Pa
- Impedance: 200 ohms
- Maximum Input Sound Level: 142 dB SPL, 1 kHz at 1% T.H.D.
- Dynamic Range: 112 dB, 1 kHz at Max SPL
- Signal to Noise Ratio: 64 dB, 1 kHz at 1 Pa
- Phantom Power Requiremens: 11-52V DC, 2 mA typical
- Weight: 63 g (2.2 oz)
- Dimensions: 69.0 mm (2.72“) long, 28.0 mm (1.10“) diameter
- Output Connector: Integral 3-pin XLRM-type
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Designed to deliver easy, flexible control in conference and boardroom installations, the versatile U891Rx cardioid condenser boundary microphone features a touch-sensitive on-off switch that can be set to three modes: press-on/press-off, press to talk, and press to mute. The phantom-powered microphone is equipped with a unique PivotPoint® rotating output connector and an LED status indicator. UniGuard® innovations offer unsurpassed immunity from radio frequency interference; interchangeable elements are available in cardioid, hypercardioid and omnidirectional polar patterns; an 80 Hz low-cut UniSteep® filter reduces pickup of low-frequency ambient noise. The microphone's heavy die-cast case and silicon foam bottom pads minimize coupling of surface vibration to the microphone. The unit's self-contained electronics eliminate the need for an external power module.
- Element: Fixed-charge back plate, permanently polarized condenser
- Polar Pattern: Half-cardioid (cardioid in hemisphere above mounting surface)
- Frequency Response: 30-20,000 Hz
- Low Frequency Roll Off: 80 Hz, 18 dB/octave
- Open Circuit Sensitivity: 34 dB (19.9 mV) re 1V at 1 Pa
- Impedance: 200 ohms
- Maximum Input Sound Level: 130 dB SPL, 1 kHz at 1% T.H.D.
- Dynamic Range: 104 dB, 1 kHz at Max SPL
- Signal to Noise Ratio: 68 dB, 1 kHz at 1 Pa
- Phantom Power Requirements: 11-52V DC, 4 mA typical
- Weight: 264 g
- Dimensions: 108.0 mm long, 84.0 mm maximum width, 23.0 mm height
- Output Connector: TB3M-type
- Cable: 7.6 m long, 3.2 mm diameter, 2-conductor, shielded cable with TA3F and XLRM-type connectors
- Designed for surface-mount applications such as high-quality sound reinforcement, professional recording, television, conferencing and other demanding sound pickup situations
- Ultra-quiet electronic switch can be set to any of three operating modes: "touch-on/ touch-off," "touch-to-talk" and "touch-to-mute“
- PivotPoint® rotating output connector allows cable to exit from either the rear or the bottom of the microphone
- Superior off-axis rejection for maximum gain before feedback
- UniGuard® RFI-shielding technology offers outstanding rejection of radio frequency interference (RFI)
- Small-diameter UniPoint® capsule near boundary eliminates phase distortion and delivers clear, high-output performance
- Heavy die-cast case and non-slip silicon foam bottom pads minimize coupling of surface vibration to the microphone
- Low-profile design with low-reflectance finish for minimum visibility
- Available in two colors: black (U891Rx) and white (U891RWx)
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C 547 BL
"Non-crush" case
Inconspicuous
Hypercardioid polar pattern
Easy to repaint
Hypercardioid, studio-quality boundary microphone with rugged, "non-crush" case and
switchable bass-cut filter for reducing footfall noise, ideal for tough on-stage assignments.
Other benefits include optimum acoustic properties, high directivity, and neutral sound.
Having the same frequency response, the C 547 BL can be combined with the CK 47 with
excellent results.
Primarily designed for use in places of worship, theaters, and conferencing, the C 547 BL
is also a good choice for miking kick drums and other instruments.
SPECIFICATIONS:
Polar pattern hypercardioid
Frequency range 30 to 18,000 Hz
Sensitivity 8.5 mV/Pa (-42 dBV)
Max. SPL 133 dB (for 1% THD)
Equivalent noise level 22 dB-A
Signal/noise ratio (A-weighted) 72 dB
Bass filter 12 dB/octave at 150 Hz
Impedance 400 ohms
Recommended load impedance >1000 ohms
Supply voltage 9 to 52 V phantom power to DIN 45596
Current consumption | Electro-Voice PolarChoice Boundary Satellite Microphone Specifications:
Generation Element: Dual condenser,back electret
Frequency Response: 50 Hz to 20,000 Hz
Polar Patterns: Omnidirectional,Cardioid,Supercardioid,Hypercardioid
Sensitivity: Open Circuit Voltage,1 kHz:5.6mV/Pascal
Clipping Level (1% THD): >135 dB SPL
Equivalent Noise: Dynamic Range: >109 dB
Output Impedance,1 kHz: 200 ohms
Power Requirements: Phantom,12 - 52 VDC
Current Consumption: < 8 mA with P12 supp
Polarity: Pin 2 positive,referenced to pin 3,with positive
pressure on the diaphragm
Accessories Furnished: All versions of PolarChoice ship with the Shock Mount Kits and EV\'s Multiport™ windscreen. |
Condenser
Lightweight, sensitive diaphragm. Precisely and smoothly captures sound nuances. Powered by battery or phantom power supply.
Recommended Uses
Conference/Installed
Available Options
MX396C/DUAL Dual-Element 0-180 Degrees, Cardioid, back or bottom exit cable, mute output, LED input
MX396/TRI Dual-Element 90-0-90 mic, adjustable to 120-120-120 degrees, Cardioid, back or bottom exit cable, mute output, LED input
The Microflex® Multi-Element Boundary microphone delivers a unique and versatile tool for conference room installations.
Clean and simple in appearance, Multi-Element Boundary mics come in two or three element configurations, combining the coverage of multiple microphones into one small, compact package.
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