AES 2003: Architectural Acoustics PZS 140RA Mixer/Amplifier

Nov 4, 2003 12:00 PM, Editors


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The new PZS 140RA is a full-featured matrix mixer with integral 35-watt power amplifiers. Its 5-input/4-output architecture is supported by a full mix matrix, front-panel zone assign switches, input level and EQ controls, and a new remote-control interface. Using the new Digitool 4S four-button, flush-mount control panel, the PZS 140RA’s matrix cross points can be configured for either “input to zone” (source select) or “zone from input” (zone select) operation. Multiple controls can be connected via the mixer’s CAT5 serial data bus. LED indicators on each input section mirror changes made by the remote control.

For installation, each input channel includes microphone and line-level inputs terminated on removable Euro connectors. Input channels 1 and 2 also include low-Z XLR connectors to easily terminate microphones used in paging applications. These inputs feature recessed front-panel controls for level, threshold and paging hold time. Channels 3, 4 and 5 also include dual rear-panel RCA connectors for easy termination of stereo sources. The PZS 140RA’s four outputs include front-panel master level controls, signal presence and clipping LED indicators. The rear panel features removable Euro connectors for terminating preamp and power amp I/O connections. The line-level outputs are 600-ohm balanced, and the power amplifier section for each output includes transformer-coupled 70-volt, 24-volt and 8-ohm outputs. In addition, a direct-coupled, 4-ohm output is provided. All power amplifier outputs are 35 watts.

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