Amp-preamp 100V Public Address

The Crown XFMR-4 is a professional rack-mountable transformer designed to adapt conventional amplifiers to 70 V and 100 V line-level sound systems. It enables the audio signal to be converted and distributed cleanly across four independent channels, facilitating the integration of amplifiers that are not originally compatible with constant-voltage systems.

ARTICLE N° 124004
Crown - XFMR-4 Crown - XFMR-4
416,67 € excl VAT
Out of stock
Guarantee 3  years
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The Crown XFMR-4 is an essential integration solution for distributed audio systems. In many professional installations, loudspeakers operate on 70 V or 100 V lines to enable audio distribution over long distances with simplified cabling and efficient multi-zone management. However, not all amplifiers have outputs that are natively compatible with these standards. The XFMR-4 was designed precisely to meet this need.

Installed in a rack, it acts as a conversion interface between the outputs of conventional amplifiers and constant-voltage loudspeaker networks. Thanks to its four independent channels, it allows multiple zones or audio circuits to be managed simultaneously, whilst ensuring stable and reliable impedance matching. The signal is transmitted with minimal loss, ensuring consistent sound reproduction throughout the entire system.

The Crown XFMR-4 is particularly well-suited to large-scale fixed installations, where flexibility and compatibility are essential. In particular, it enables existing amplifiers to be integrated into modern infrastructure without requiring a complete system replacement. This approach makes it a cost-effective and practical solution for audio integrators and installers.

Its 19-inch rack-mount design makes it easy to integrate into standard equipment racks, alongside amplifiers and audio processors. Robust and reliable, it is designed for continuous operation in demanding professional environments, where signal stability and the security of the audio network are paramount.
Canals
 4
Weight
 7,7 kg
19" rack
 1U
Input channels
 4
Color
 Black
Connectors
 Terminal block / Euroblock
Packaging
 Single unit
  • Crown XFMR-4
  • Rack-mountable impedance-matching transformer for distributed audio systems
  • Number of channels: 4
  • Compatibility: 70 V and 100 V public address systems
  • Application: integration of non-compatible amplifiers into constant-voltage lines
  • Use: fixed installations, multi-zone systems, commercial and institutional public address systems
  • Frequency response: ±1.0 dB (70 Hz to 15 kHz)
  • Insertion loss: ≤1.0 dB at 70 VAC
  • Maximum input level: 32 Vrms / 125 W
  • Connection type: plug-in terminal blocks
  • Supported cable gauge: up to 14 AWG
  • Connection cables supplied for integration with compatible amplifiers
  • 19" rack: 1U
  • Dimensions: 483 x 397 x 44 mm
  • Weight: 7.7 kg

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Crown - XFMR-4
416,67 € excl VAT