Sonifex RB-UL4 | Quad Stereo Unbalanced To Balanced Converter

The RB-UL4 is a 1U rack-mount quad stereo unit for interfacing domestic or semi-professional unbalanced equipment to professional balanced line levels. All connections are on the rear panel. The eight RCA unbalanced inputs have an impedance of 10kΩ and are routed to eight balanced XLR-3 outputs with an output impedance of <50Ω.The output gain can be individually adjusted for left and right channels by using pre-set potentiometers accessible through the rear panel.

Product Features

• Pre-set left and right gain controls
• 4x stereo phono (10kΩ) inputs.
• 4x stereo balanced Neutrik XLR <50Ω outputs.

Typical Applications

Interfacing domestic unbalanced audio devices e.g. a CD player or ipod to balanced audio equipment.

Product Category

Signal Converters

Technical Specifications

Audio Specification

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

Connections

• Inputs: 8 x RCA phono (Unbalanced)
• Outputs: 8 x XLR 3 pin male (Balanced)
• Mains Input: Filtered IEC, switchable 110-120V, or 220-240V, fused, 6W max
• Fuse Rating: Anti-surge fuse 100mA 20 x 5mm (230VAC)
• Fuse Rating: Anti-surge fuse 250mA 20 x 5mm (115VAC)

Equipment Type

• RB-UL4: Quad stereo unbalanced to balanced converter

Physical Specification

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

Support and Downloads

Handbooks & Guides

• RB-UL4 Handbook

Brochures

• Click to visit the brochures page.

Declarations

• Click to visit the declarations page.

Related Products

• RB-BL2 Unbalanced to Balanced Bi-Directional Converter
• RB-BL4 Dual Stereo Bi-Directional Matching Converter
• RB-FR1 Front Panel Kits for Redboxes
• RB-LU4 Quad Stereo Balanced to Unbalanced Converter
• RB-UL2 Dual Stereo Unbalanced to Balanced Converter

Official Links

• Official Product Page