PB-2XX Two channel universal line isolator

349.99 Request

The Iso•Max PB-2XX is a two-channel universal isolator that gives you the freedom to solve noise problems anywhere in the signal chain.

  • Eliminates hum and buzz caused by ground loops
  • May be used anywhere in the signal chain
  • Ruler flat frequency response from 1 Hz to 200 kHz
  • Plug and play easy to use, no power required

The design begins with a rugged flanged enclosure that comes standard with gold plated XLRs and a removable screw-down barrier strip for easy installation in NEMA enclosures and 19” racks. Plug and play easy to use, this passive interface does not require any power to work. Inside are two specially designed Jensen multi-tap isolation transformers that provide unity gain, signal boost or level attenuation depending on how they are configured. These are able to withstand signals in excess of +24 dB without discernible distortion while delivering a fabulously linear response to 200 kHz. This provides galvanic isolation between the input and output to eliminate hum and buzz caused by ground loops, rejecting noise by as much as 125 dB. To further optimize the performance, a bottom mounted eight position ‘set & forget’ dip switch enables the user to configure the PB-2XX grounding scheme as needed.

You simply connect the PB-2XX anywhere you like between the source and destination and the PB-2XX will quietly go to work, eliminating ground loops, electromagnetic interference (EMI) and RFI problems. This makes the Iso•Max PB-2XX a superb choice for the most demanding studio, broadcast and performance venue installations.

Applications

PB-2XX as a universal isolator

The PB-2XX may be connected anywhere in the signal chain. This makes it a great choice for machine rooms in a broadcast facility where different varying power systems throughout can introduce noise.

PB-2XX in the studio

Recording and broadcast studios require noise-free signal transfer while delivering the most accurate sound possible. The PB-2XX eliminates ground loops and lowers RF without introducing distortion, phase shift or artifact.

Specifications

1:1 series/series configuration, all levels are input unless noted

PARAMETER CONDITIONS MINIMUM TYPICAL MAXIMUM
Input impedance, Zi 1 kHz, +4 dBu, test circuit 1 743 Ω 750 Ω 757 Ω
Voltage gain 1 kHz, +4 dBu, test circuit 1 -2.1 dB -1.9 dB -1.7 dB
Magnitude response, ref 1 kHz 20 Hz, +4 dBu, test circuit 1 -0.2 dB -0.06 dB ±0.0 dB
20 kHz, +4 dBu, test circuit 1 -1.0dB -0.02 dB +0.1 dB
Deviation from linear phase (DLP) 20 Hz to 20 kHz, +4 dBu, test circuit 1   +0.6/-0° ±2.0°
Distortion (THD) 1 kHz, +4 dBu, test circuit 1   <0.001%  
Distortion (THD) 20 Hz, +4 dBu, test circuit 1   0.025% 0.10%
Maximum 20 Hz input level 1% THD, test circuit 1 +19 dBu +21 dBu  
Input common mode rejection ratio (CMRR) 600 Ω balanced source 60 Hz, test circuit 2   125 dB  
Input common mode rejection ratio (CMRR) 600 Ω balanced source 3 kHz, test circuit 2 75 dB 95 dB  
Output common mode rejection ratio (CMRR) 600 Ω balanced load 60 Hz, test circuit 3   110 dB  
Output common mode rejection ratio (CMRR) 600 Ω balanced load 3 kHz, test circuit 3   80 dB  
Output impedance, Zo 1 kHz, test circuit 1   750 Ω  
Turns ratio primary to secondary 0.999:1 1.000:1 1.001:1
Optimal cable length input   50 m (165’) 200 m (650’)
Optimal cable length output   30 m (100’) 100 m (325’)
Temperature range operation or storage 0°C   70°C
Input to Output Voltage Difference* any input to any output shield or any shield to case, 60 Hz 250 V RMS    

Graphs

Phase Distortion (DLP)
Frequency Response
THD vs Level at Low Frequencies
THD vs Frequency at Various Levels

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