The RB-LI2 stereo line isolation unit is used to isolate audio signals from inter-area ground hum loops, which could be caused by equipment being powered by different mains power supplies, or different phases on the same supply. The input and output are connected together through a transformer, which has internal jumpers allowing the outputs to be balanced about ground. There is also a loop-through output, so that the RB-LI2 can be inserted into a line, forming a transformer balanced distribution point.
Product Features
2x Balanced analogue inputs.
2x Balanced, transformer isolated outputs.
2x Balanced. loop-through outputs.
Pre-set left and right iso-output gain controls.
Typical Applications
To reduce earth hum problems, especially when the equipment at each end of your cable run is powered for either different mains power supplies or different phases of the same supply. To create an isolated distribution point, or if you need to take a feed from somewhere that doesn’t have a distribution amplifier.
Product Category
Signal Isolation
Technical Specifications
Audio Specification
Output Impedance: <150Ω
Distortion: 0.5% THD @ 40Hz, ref +17dBu output
Common Mode Rejection: <64dB typically
Frequency Response: 10Hz to 36kHz ±0.5dB
Output Gain Range: -15dB to +13.5dB
Connections
Inputs: 2 x XLR 3 pin female (Balanced)
Isolated Outputs: 2 x XLR 3 pin male (Balanced)
Loop Outputs: 2 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-L12: Stereo line isolation unit
Physical Specification
Dimensions (Raw): 28cm (W) x 10.8cm (D) x 4.2cm (H) (1U)
Dimensions (Raw): 11” (W) x 4.3” (D) x 1.7” (H) (1U)
Dimensions (Boxed): 36cm (W) x 20.5cm (D) x 6cm (H)
