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Sennheiser Esfera 5.1 Surround Microphone System  From Sennheiser

Innovative 5.1 system processor from a single pair of X/Y microphones



Retail:  $12,499.00

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Manufacturer's Description from Sennheiser

Introducing Esfera, Sennheiser’s innovative 5.1 surround microphone system which elegantly creates immersive surround audio from a single pair of X/Y microphones. Esfera simplifies workflows for broadcast professionals by efficiently capturing authentic ambience using just two audio channels, and converting this audio information to 5.1 at any point in the workflow - live or in post-production.

The Esfera system features two components: the SPM 8000 two-channel microphone unit, and the SPB 8000 surround processor unit, sold separately or as part of a complete system package, available at a special introductory price.


About Manufacturer

Innovation and know-how those are the hallmarks of one of the world's leading companies in the area of electro-acoustics. From individual audio products to complete system solutions Sennheiser electronic has the knowledge and the experience to lead the way in the constantly developing audio market. The key factors in its extraordinary success are its customer orientation, the performance of its employees, and its worldwide market presence. Sennheiser responds to the enormous significance of the foreign markets by maintaining intimate contact with its customers through an international network of sales subsidiaries and independent sales partners, most of which have been collaborating with Sennheiser for many years. This consistent customer orientation is also reflected in the seven major business areas of the company. In 2001, Sennheiser's consolidated turnover amounted to 227,4 million EURO. As a family business with about 1.500 employees, Sennheiser is completely self-financed. The independence of external financiers is the basis for innovation and implementation of a high quality standard for products. The focus is not on short-term return on capital but on the healthy long-term development of the company. Music Industry Toploader, Manowar, Sting, Dido or Sasha stars and sound engineers rely on Sennheiser quality. The product range offers everything from rugged, roadworthy stage microphones to studio condenser microphones for audiophile recordings. The portfolio also includes in-ear monitoring systems for the artists and monitoring headphones for the sound engineer ... Consumer Electronics In-ear headphones and other "lightweights" for music on the move, classical open or closed cabled headphones, RF wireless headphones for greater freedom of movement, PC headsets, and TV headphones, also with infrared or radio-frequency transmission. Sennheiser's competency in headphones is matched by its experience with microphones: whether for hi-fi systems, natural life recordings, or for PCs, at Sennheiser, consumers find the right microphone for every purpose ... Professional Systems Theater, musical productions, special events, movies, radio, and television ? wherever professional sound transmission solutions are called for, on stage or backstage, Sennheiser brings its comprehensive system know-how to bear. With its RF wireless microphones of the top-of-the-line 3000 and 5000 Series, the company leads the field ... Aviation With pilot headsets for airline and private pilots as well as headphones for in-flight entertainment, Sennheiser covers the complete range of audio transmission on board. The special NoiseGard system efficiently reduces wind and aircraft noise and thus provides for clear communication and safety in radio traffic and gives passenger headphones disturbance-free sound that is worth listening to ... Installed Sound At conferences, museums, and exhibitions, Sennheiser's conference and tour-guide systems provide for comfort and communication across the boundaries of countries and languages. Infrared systems in theaters and event venues provide crystal-clear sound directly to the ears of the hearing impaired. Wherever communication takes place, an innovative Sennheiser solution is not far away ... Audiology The Sennheiser range for better hearing! RF or infrared headphones make watching television a pleasure once again for everyone concerned, because these lightweights let you hear without disturbing others. Personal sound amplifiers that can be used as needed make speech clear and understandable. Sennheiser also offers television systems and personal FM systems to hearing-aid users ... Telecommunications With PC headphones, microphones, and headsets from Sennheiser, you can discover the fascinating world of multimedia, work more reliably with voice recognition systems, set up your Internet telephony system more professionally, and much, much more ...



Pick-up pattern

  • Cardioid (XY-stereo, 90° offset)

Frequency response

  • 35 Hz to 20 kHz


  • -34 dBV/Pa (20 mV/Pa)

Max. SPL

  • 142 dB SPL

Equivalent noise level

  • 13 dB (A) (DIN-IEC 651)
  • 22 dB (CCIR 268-3)

Power supply

  • Phantom power 48 V ± 4 V (P48, IEC 61938)

Current consumption

  • 3.3 mA


  • Approx. 106 mm


  • Approx. 237 mm


  • Approx. 595 g (670 g with “hairy” cover)

Operating temperature

  • –10°C to +60°C

Package Contents


  • (1) SPM 8000 microphone, consisting of 2 microphone capsules and a suspension with
  • pistol grip
  • (1) Basket windshield
  • (1) “Hairy” cover
  • (1) Y-adapter cable (XLR-5 socket to 2x XLR-3 connector)
  • (1) Instruction manual






  • 2 XLR-3F sockets, transfomerless balanced


  • Approx. 4 kΩ, balanced

Phantom power

  • 48 V, switchable


AES3 standard

  • Channels L/R


  • 1 XLR-3F socket


AES3 standard

  • Channels L/R, C/LFE, SL, SR


  • 3 XLR-3M sockets

Sampling Rates

  • 44.1 / 48 / 88.2 / 96 kHz

Bit rate

  • 24 bits


  • Professional


Word clock

  • BNC socket

AES3 input clock

  • XLR-3F socket


Frequency response

measured at AES3


  • 10 Hz-21 kHz at 44.1 kHz sampling rate
  • 10 Hz-22.5 kHz at 48 kHz sampling rate
  • 10 Hz-42 kHz at 88.2 kHz sampling rate
  • 10 Hz-45 kHz at 96 kHz sampling rate


Signal-to-noise ratio at 48 kHz sampling rate


  • CCIR 468: –82.6 dB, 64 dB gain
  • CCIR 468: –106,1 dB, 30 dB gain
  • A-weighted: –85.5 dB, 64 dB gain
  • A-weighted: –109.3 dB, 30 dB gain
  • Unweighted: –84 dB, 64 dB gain
  • Unweighted: –104,3 dB, 30 dB gain



THD + Noise

THD at 1 kHz:

  • 0.03% at 64 dBu, gain: -12 dBFS
  • 0.004% at 30 dBu, gain: -12 dBFS

Dynamic range

  • 130.3 dB 30 dB gain (A-weighted)

Max. gain

  • +64 dB


  • –70 dB at 10 kHz (–30 dBu input, 30 dB gain)



  • RJ 45 socket

Firmware update

  • Via HTTP


Voltage ranges

  • 115 V~ / 230 V~, 50/60 Hz

Power consumption

  • Max. 15 W