Sennheiser SPB 8000 Microphone System

Esfera is a surround microphone system which is easy to install and very easy to use. Esfera provides 5.1 surround sound from just two channels, making complicated surround mic installations a thing of the past. The system consists of the SPM 8000 stereo and the Sennheiser SPB 8000 Microphone System processing unit that converts the signals of the microphones into a complete 5.1 audio signal.

The SPB 8000 processing unit converts the signals of the SPM 8000 stereo microphone into a complete 5.1 audio signal.

Features:

• Supplies microphones with 48 V phantom power
• Input switchable between analog and digital AES3 signals
• Switchable compressor
• 4 programmable presets for storage of 5.1 surround parameters
• SPB 8000 adjustable via a web interface

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Microphone input

• Impedance: approx. 4 kΩ, balanced
• Phantom powering: 48 V, switchable
• Connection: 2 XLR-3F sockets, transformerless balanced
• Dimensions: depth with controls and sockets: approx. 44 x 482 x 275 mm (H x W x D)
• Dimensions: depth with sockets: approx. 44 x 482 x 260 mm (H x W x D)
• Dimensions: depth of housing: approx. 44 x 482 x 240 mm (H x W x D)
• Weight: approx. 3.9 kg

Power supply

• Connector: (Mains) 3-pin, protection class I as per IEC/EN 60320-1
• Power consumption: max. 15 W
• Fuse: 115 V AC: T 160 mA L 250 V
• Fuse: T 315 mA L 250 V
• Voltage: range: 115 V~ / 230 V~, 50/60 Hz

Audio characteristics

• THD, total harmonic distortion: 0.03% at 64 dBu: gain: −12 dBFS at 1 kHz
• THD, total harmonic distortion: 0.004% at 30 dBu: gain: −12 dBFS at 1 kHz
• Signal-to-noise ratio
• CCIR 468: –82.6 dB, 64 dB gain at 48 kHz sampling rate
• CCIR 468: –106,1 dB, 30 dB gain at 48 kHz sampling rate
• Signal-to-noise ratio
• A-weighted: –85.5 dB, 64 dB gain at 48 kHz sampling rate
• A-weighted: –109.3 dB, 30 dB gain at 48 kHz sampling rate
• Signal-to-noise ratio
• Unweighted: –84 dB, 64 dB gain at 48 kHz sampling rate
• Unweighted: –104,3 dB, 30 dB gain at 48 kHz sampling rate
• Gain: +64 dB (max.)
• Dynamic range: 130.3 dB 30 dB gain (A-weighted)
• Crosstalk: –70 dB at 10 kHz (–30 dBu input, 30 dB gain)
• Frequency response measured at AES3 Out ½: at 44.1 kHz sampling rate: 10 Hz-21 kHz
• Frequency response measured at AES3 Out ½: at 48 kHz sampling rate: 10 Hz-22.5 kHz
• Frequency response measured at AES3 Out ½: at 88.2 kHz sampling rate: 10 Hz-42 kHz
• Frequency response measured at AES3 Out ½: at 96 kHz sampling rate: 10 Hz-45 kHz

Digital input

• AES3 standard: channels L/R
• Connection: 1 XLR-3F socket

Digital output

• AES3 standard: channels L/R, C/LFE, SL, SR
• Sampling rates: 44.1 / 48 / 88.2 / 96 kHz
• Bitrate: 24 bits
• Format: professional
• Connection: 3 XLR-3M sockets

Ethernet

• Communication: HTTP (POST request method), JSON-compliant
• Ports: 80, 9050 with multicast
• Connection: RJ 45 socket
• Firmware: update via HTTP

Synchronization

• Word clock: via Input socket B (BNC)
• AES3 input: clock via In socket D (XLR-3F)

What's in the box

• 1 SPB 8000 processing unit
• 3 mains cables (EU, UK and US version)
• 1 network cable
• 4 self-adhesive feet
• 1 instruction manual