Sonifex already have a number of products in the Redbox range which allow level and impedance matching in a number of formats, such as unbalanced to balanced converters. Two new products have been released to address the needs of the television market, where signals need to be driven over a long distance, or protected from ground loop hums.
Both of the new products are 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 phases on the same supply. They are also useful where audio is required to be driven over a relatively long length of cable. By isolating the signal using transformers, ground loop currents that can be present in non-isolated signals, are eradicated completely.
The RB-PLI6 6 way mono passive line isolation unit has 6 inputs and 6 outputs which are connected together through a transformer. Internal jumpers allow the inputs and/or outputs to be balanced about ground and the unit requires no mains power for operation.
The RB-LI2 stereo line isolation unit has 2 inputs and 2 output which are connected together through a transformer. Internal jumpers allowing the outputs to be balanced about ground and there are also 2 loop-through outputs, so that the RB-LI2 can be inserted into a line, forming a transformer balanced stereo audio distribution point.
The RB-PLI6 has a UK list price of £267.95 and the RB-LI2 a UK list price of £249.95. Both products are available now.
