Radial Engineering LX8
8 Channel Line Level Signal Splitter and Isolator


The Radial LX8™ is an eight-channel passive line level isolator designed specifically to manage balanced signals in professional audio systems. Applications include splitting a source between two destinations or simply isolating devices to eliminate the hum and buzz caused by ground loops.

The single rack space design begins with a 100% passive circuit which means it does not require any powering whatsoever to make it work. Inside, each of the eight channels is equipped with a premium Jensen® JT-123-SLPC transformer that is able to handle transients in excess of +26dB at all frequencies right down to 20Hz without audible distortion. This results in an accurate signal transfer with minimal phase shift or artifact. In the studio, the Jensen transformer delivers added warmth and a natural 'vintage-sounding' compression that is preferred by the most critical listeners. When used in larger systems, you benefit from significantly lower noise.

Input connections include a series of front-panel XLRs for easy integration into live racks or a rear-mounted 25-pin D-sub. Output connections include a hardwire thru-put, a transformer isolated output and an auxiliary output, the latter two being equipped with ground lift switches to help eliminate hum and buzz caused by ground loops. All rear panel connections are presented with a choice of standard 25-pin D-Sub wired to the TASCAM-ProTools standard or with screw-down Phoenix connectors for easy field termination for permanent installations. (Phoenix cable terminal connectors are sold separately).

All of the eight incoming signals are routed to the direct output, the transformer isolated output and an auxiliary out, enabling multiple signal paths to be put into practice without the usual noise that is associated.

Radial Engineering LX8 Line Level Splitter and Isolator Features:

  • Handles +26dB signals without distortion or artifact
  • Jensen transformer-equipped for optimal signal transfer
  • Eliminates hum and buzz caused by ground loops

Radial Engineering LX8 Line Level Splitter and Isolator Specifications:

  • Part Number: R800 8200
  • Technical Specifications:
    • Audio Circuit Type: Passive transformer based line level splitter
    • Number of Channels: 8 channel 3-way splitter (1-in/3-out)
    • Frequency Response: 20Hz ~ 20KHz (+0dB/-0.1dB)
    • Dynamic Range: 140dB
    • Maximum Input: +26dBu @ 1kHz, +24dBu @ 20Hz
    • THD +Noise: 0.003% @ 1kHz
    • Phase Deviation: 0.2° @ 100Hz; 0.4° @ 20Hz
    • Common Mode Rejection (CMR): -85dB @ 60Hz
    • Input Impedance: 600 Ohms, balanced
    • Output Impedance: 600 Ohms, balanced
  • Configuration:
    • Transformer: Jensen JT-123-SLPC
    • Ground Lift - Isolated Out: Disconnects ground path at isolated output
    • Ground Lift - Auxiliary Out: Disconnects ground path at auxiliary output
    • XLR Configuration: AES standard (pin-1 ground, pin-2 hot, pin-3 cold)
    • DB-25 Configuration:  TASCAM / ProTools 8 channel interface standard
  • Physical Specifications: 
    • Construction: 14 gauge steel
    • Finish: Durable powder coat
    • Dimensions (LxWxH): 19" x 6" x 1.75" (48.25 x 15.25 x 4.45 cm)
    • Weight: 7.5 lbs (3.4 kg)
    • Power: Passive, no power required
    • Warranty: Radial 3-year, transferable
    • Conditions: For use in dry locations only between 5°C and 40°C
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