Sonifex RB-BL4

The RB-BL4 is a dual bi-directional stereo unit for interfacing domestic or semi-pro unbalanced equipment to professional balanced line levels, and vice versa.

The four XLR-3 electronically balanced inputs have an impedance of 20kΩ bridging and are routed to four unbalanced RCA (phono) outputs with an output impedance of <50Ω.

The four RCA unbalanced inputs have an impedance of 20kΩ and are routed to four balanced XLR-3 outputs with an output impedance of <50Ω. All connections are on the rear panel.

The output gain can be adjusted for left and right channels by using pre-set potentiometers accessible through the rear panel.

RB-BL4 Diagram

Audio Specification

Maximum Input Level:+28dBu
Maximum Output Level:+28dBu
Input Impedance (RCA):>10kΩ unbalanced
Input Impedance (XLR):>20kΩ balanced bridging
Output Impedance (RCA):<50Ω
Output Impedance (XLR):<50Ω
Distortion:0.01% THD @ 1kHz, ref +8dBu output
Noise:-100dB, unity gain, ref +8dBu output
Common Mode Rejection:>66dB typically
Frequency Response:20Hz to 20kHz ±0.1dB (600Ω load, ref 1kHz)
Gain Range:Unbalanced Output : -28dBu to 0dBu, ref 0dBu into balanced XLR input Balanced Output : -15dBu to +15dBu, ref -15dBu into unbalanced RCA input

Connections

Inputs:4 x RCA phono (Unbal), 4 x XLR 3 pin female (Bal)
Outputs:4 x XLR 3 pin male (Bal), 4 x RCA phono (Unbal)
Mains Input:Filtered IEC, switchable 110-120V, or 220-240V, fused, 6W max
Fuse Rating:Anti-surge fuse 100mA 20 x 5mm (230VAC) Anti-surge fuse 250mA 20 x 5mm (115VAC)

Equipment Type

RB-BL4:Dual stereo bi-directional matching converter

Physical Specification

Dimensions (Raw):48cm (W) x 10.8cm (D) x 4.2cm (H) (1U) 19” (W) x 4.3” (D) x 1.7” (H) (1U)
Dimensions (Boxed):58.5cm (W) x 22.5cm (D) x 7cm (H) 23” (W) x 8.9” (D) x 2.8” (H)
Weight:Nett: 1.3kg  Gross: 1.9kg Nett: 2.9lbs Gross: 4.2lbs

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    Sonifex RB-BL4

    $514.00

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    2-Year Warranty

    $514.00

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