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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 U841A delivers exceptionally intelligible audio reproduction in a super-compact, low-profile design. Equipped with UniGuard® RFI-shielding technology, this omnidirectional condenser boundary microphone is designed for clear, highly intelligible sound reinforcement, professional recording, television and conferencing in surface-mount applications. The U841A has a 360° pickup angle and operates on battery or phantom power.
- Designed for surface-mount applications such as high-quality sound reinforcement, professional recording, television, conferencing and other demanding sound pickup situations
- UniGuard® RFI-shielding technology offers outstanding rejection of radio frequency interference (RFI)
- UniSteep® filter provides a steep low-frequency attenuation to improve sound pickup without affecting voice quality
- Small-diameter UniPoint® capsule near boundary eliminates phase distortion and delivers clear, high-output performance
- Heavy die-cast case and silicon foam bottom pad minimize coupling of surface vibration to the microphone
- Low-profile design with low-reflectance black finish for minimum visibility
- Operates on battery or phantom power
- Element: Fixed-charge back plate permanently polarized condenser
- Polar Pattern: Omnidirectional in hemisphere above mounting surface
- Frequency Response: 30-20,000 Hz
- Low Frequency Roll Off: 80 Hz, 18 dB/octave
- Open Circuit Sensitivity: Phantom: -39 dB (11.2 mV) re 1V at 1 Pa Battery: -40 dB (10.0 mV) re 1V at 1 Pa
- Impedance: Phantom: 200 ohms Battery: 270 ohms
- Maximum Input Sound Level: Phantom: 132 dB, 1 kHz at 1% T.H.D. Battery: 122 dB SPL, 1 kHz at 1% T.H.D.
- Dynamic Range: Phantom: 111 dB, 1 kHz at Max SPL Battery: 101 dB, 1 kHz at Max SPL
- Signal to Noise Ratio: 73 dB, 1 kHz at 1 Pa
- Phantom Power Requiremens: 11-52V DC, 2 mA typical
- Battery Type: 1.5V AA/UM3
- Battery Current Life: 0.4 mA / 1200 hours typical (alkaline)
- Switch: Off, on-flat, on-roll-off
- Cable: 25.0' (7.6 m) long (permanently attached to microphone), 0.13" (3.2 mm) diameter, 2-conductor, shielded cable with TA3F-type connector
- Accessories: AT8531 power module; battery; soft protective pouch
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Designed for Broadcast, House of Worship, Pro Music, and other applications.
Half-cardioid polar pattern
Boundary layer
Ultra-thin profile (16 mm) housing
Rubber non-slip bottom pad and strong steel screen
Integrated pop filter
Case Material Die cast zinc
Connector Type 3-pin XLR
Element Back Electret Condenser
Finish Non-reflecting Black
Finish White
Impedance, Low-Z balanced 200 Ω
Mic Type Boundary
Open Circuit Voltage 25 mV/Pascal
Polar Pattern Cardioid
Wired/Wireless Wired
Height 16 mm (0.63“)
Width 94 mm (3.7“)
Depth 123 mm (4.84“)
Weight Net 12.63 oz (358 g) |
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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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
| The PRO42\'s low-profile design assures inconspicuous appearance for surface-mount use in boardroom, school, government, house of worship and other installed applications. Designed for sound reinforcement, broadcasting and recording applications, the PRO42 brings crisp, intelligible audio reproduction to the podium, stage, conference table and beyond. With a wide-range condenser element and low-mass diaphragm for superior performance, the microphone is equipped with self-contained electronics, eliminating the need for external power modules.
Very low-profile design for minimum visibility
Wide-range condenser element with low-mass diaphragm for superior performance
Uniform polar pattern for maximum rejection of unwanted sounds
Rugged design and construction
25\' (7.6 m) cable permanently attached between microphone and XLRM-type connector
Element: Fixed-charge back plate, permanently polarized condenser
Polar Pattern: Half-cardioid (cardioid in hemisphere above mounting surface)
Frequency Response: 70-14,000 Hz
Open Circuit Sensitivity: -38 dB (12.5 mV) re 1V at 1 Pa
Impedance: 100 ohms
Maximum Input Sound Level: 134 dB SPL, 1 kHz at 1% T.H.D.
Dynamic Range: 105 dB, 1 kHz at Max SPL
Signal to Noise Ratio: 65 dB, 1 kHz at 1 Pa
Phantom Power Requiremens: 9-52V DC, 2 mA typical
Weight: 1.2 oz (35 g)
Dimensions: 1.44" (36.6 mm) maximum width, 2.14" (54.3 mm) maximum length, 0.61" (15.5 mm) height
Output Connector: 3-pin XLRM-type on cable
Cable: 25\' (7.6 m) long, permanently attached |
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