SENNHEISER E-912 HALF-CARDIOID CONDESER BOUNDARY MICROPHONE

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 
 

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.

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)

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

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