LD SYSTEMS LDBM1 CONDENSER BOUNDARY ELECTRET MICROPHONE

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.

The e 912 is a pre-polarized condenser boundary microphone with
half-cardioid pick-up pattern. Its acoustic properties have been
optimized for instruments, vocals and speech. The e 912 is an ideal
choice for pianos, theatre and opera productions, conference applications,
altars and lecterns.To optimally match the installation environment,
the e 912 is available in black or creme white.

Features
Frequency response and sensitivity optimized for picking up instruments,
vocals and speech
Unobtrusive, flat housing
Extremely rugged and step-resistant
Shock-absorbing rubber base
Mounting slots for table installation
Gold-plated XLR connector
Integrated pre-amp 
Delivery Includes
e 912 Microphone
Pouch
User manual

Technical Data
Transducer principle (Microphone)  permanently polarized condenser 
Pick-up pattern  half-cardioid 
Sensitivity in free field, no load (1kHz)  10 mV/Pa 
Max. Sound pressure level (aktiv)  135,6 dB 
Equivalent noise level  26 dB(A) 
Phantom powering  48 V / 1,1 mA 
Nominal impedance  Min. terminating impedance  1000 Ohm 
Dimensions  126,5 x 105 x 26,5 mm 
Weight  ca. 550 g 
 

The white-finished version of the U851R, the phantom-powered U851RW features a PivotPoint® rotating output connector, UniSteep® filter and UniGuard® RFI-shielding technology. Offering outstanding speech intelligibility and transparent sound quality for surface-mount applications, the U851RW accepts interchangeable condenser elements - available for boundary microphones in cardioid, hypercardioid and omnidirectional polar patterns. With a heavy die-cast case and silicon foam bottom pads to minimize coupling of surface vibration to the microphone, the U851RW is equipped with self-contained electronics, eliminating the need for an external power module.

• Designed for surface-mount applications such as high-quality sound reinforcement, professional recording, television, conferencing and other demanding sound pickup situations
• 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)
• Self-contained electronics eliminate need for external power module
• 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 (U851R) and white (U851RW)

• 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: 134 dB SPL, 1 kHz at 1% T.H.D.
• Dynamic Range: 108 dB, 1 kHz at Max SPL
• Signal to Noise Ratio: 68 dB, 1 kHz at 1 Pa
• Phantom Power Requiremens: 11-52V DC, 4 mA typical
• Switch: Flat, roll-off
• Weight: 9.2 oz (262 g)
• Dimensions: 4.25" (108.0 mm) long, 3.31" (84.0 mm) maximum width, 0.91" (23.0 mm) height
• Output Connector: TB3M-type
• Cable: 25.0' (7.6 m) long, 0.13" (3.2 mm) diameter, 2-conductor, shielded cable with TA3F and XLRM-type connectors

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