A 4566 • In-Line 22uF Speaker line Isolator Box

This module has been designed to monitor the integrity of 100V Line speaker circuits. It is connected between the amplifier output and the speaker circuit. The module will detect one of three speaker line conditions. (Normal, Short Circuit or Open Circuit).

SKU: A 4566 Categories: ,

A simple in-line connection box fitted with a line monitoring capacitor. Since many 100V speakers do not have 22μF capacitors fitted, this box allows you to easily add it into the circuit for connection to a line monitoring system. Ideal for retrofitting to existing speakers. Easy screw terminal connection for field wiring. Size: 50 x 36 x 22mm.

Key Features:

  • Adds line monitoring capability to speakers without line monitoring capacitors.
  • Easy in line connection.
  • Chassis/wall mountable enclosure.
  • Screw Terminals for all connections
  • Compact design


Developed, designed & assembled in Australia.
Since 1976 Redback PA products have been manufactured in Perth, Western Australia by Altronics. With over 40 years experience in the commercial audio industry, we offer consultants, installers and end users reliable products of high build quality with local product support.

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