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Sonifex RB-SP1

Digital Splitter and Combiner
$597.00
RB-SP1

(0 reviews)

The RB-SP1 Digital Splitter & Combiner is a 1U rack-mount unit used to interface various double sampling pieces of equipment. Some older equipment uses 2 AES/EBU connectors for double sampling with each

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RB-SP1 $597.00
  • The RB-SP1 Digital Splitter & Combiner is a 1U rack-mount unit used to interface various double sampling pieces of equipment. Some older equipment uses 2 AES/EBU connectors for double sampling with each connector carrying an audio signal at a normal frame rate, whilst other equipment has a single connector using twice the frame rate. The RB-SP1 can interface between them, either combining the signals from 2 XLR's into 1, or splitting the signal from 1 XLR into 2.
    The RB-SP1 can also be used for interfacing stereo and mono signals to digital mixing desks by splitting the left and right signals of a stereo XLR to two separate XLRs, and vice versa by combining them.

    Additionally, a sample rate converter on the second digital input can be used to synchronize or convert the sample rate of the secondary input to that of the primary input. The RB-SP1 can handle sample rates up to 96kHz and bit-rates of 16, 20 and 24 bit.

    Both inputs and outputs can be selected as either AES/EBU or S/PDIF.

    There are two types of operation : Split 96, and Stereo/Mono. These each have three different switch modes : Split, Combine and Bypass.

    Split 96 - This is a method that allows older equipment to handle 48kHz double sampled (96kHz) digital signals. To do this, Split 96 uses two digital signals running at 48kHz, where both sub-frames of a single 48kHz stream are used to carry information about a mono signal, with the resultant signal of both 48kHz streams being equivalent to a stereo 96kHz signal. The unit will also perform the same function for 88.2kHz stereo and 44.1kHz double sampled signals.

    • In Split Mode a single stereo 96kHz signal is received into input 1 which is then output as two separate 48kHz signals.
    • In Combine Mode two 48kHz double sampled input signals are combined to create a single 96kHz signal on output 1.

    Stereo/Mono - This allows a digital stereo signal to be separated into two digital mono signals and vice-versa.

    • In Split Mode a single stereo signal is routed to two mono outputs.
    • In Combine Mode two mono signals are combined to create a single stereo signal.

    Bypass Mode - In Bypass Mode, input 1 is routed to output 1 and input 2 is routed to output 2. Input 1 is used as a master clock input. If input 2 is set at a different sample rate to input 1 then input 2 is sample rate converted to match input 1.

  • Audio Specification
    Input Impedance 110ohms +/-20% balanced (AES/EBU) 75ohms +/-5% unbalanced (S/PDIF)
    Output Impedance 110ohms +/-20% balanced (AES/EBU) 75ohms +/-5% unbalanced (S/PDIF)
    Signal Level 3V/10V peak to peak min/max (AES/EBU) 0.5V ±20% peak to peak (S/PDIF)
    Sample Freq Range 30-100kHz (i.e. including 32kHz, 44.1kHz, 48kHz, 64kHz, 88.2kHz and 96kHz)
    Bit Depth Up to and including 24 bit
    Sample Frequency Range 30-100kHz (i.e. including 32kHz, 44.1kHz, 48kHz, 64kHz, 88.2kHz and 96kHz)
    Dynamic Range 120dB
    Distortion and Noise -114dB THD + N at 1kHz, ref 0dB FS
    Connections
    Audio Inputs 2 x AES/EBU XLR 3 pin female (balanced) 2 x S/PDIF RCA phono female (unbalanced) (Input button selects between AES/EBU and S/PDIF)
    Audio Outputs 2 x AES/EBU XLR 3 pin male (balanced) 2 x S/PDIF RCA phono female (unbalanced) (Output button selects between AES/EBU and S/PDIF)
    Mains Input Filtered IEC, continuously rated 85-264VAC @ 47-63Hz, 10W max
    Physical Specification
    Weight Nett: 1.6kg Gross: 2.2kg
    Dimensions Raw: 48cm (W) x 10.8cm (D) x 4.2cm (H) (1U) Boxed: 53cm (W) x 20.5cm (D) x 6cm (H)
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