TOA L-41S T – Balanced Line Input Module with Mute Send, 900 Series

Product Overview

The TOA L-41S T is a transformer-balanced line matching input module for the TOA 900 Series modular amplifier platform, incorporating a mute-send function that allows this module to initiate a mute control signal to other modules in the system when it becomes active. This mute-send capability makes the L-41S T an appropriate choice for priority input scenarios—such as paging stations, emergency alert inputs, or broadcast override feeds—where the active input should suppress other audio sources simultaneously. Commercial AV integrators designing priority paging architectures or integrated background music systems for TOA 900 Series installations will find the L-41S T provides the input control logic needed at the module level. The 600-ohm transformer ensures proper impedance matching and noise rejection for balanced professional audio signals.

Product Description

The L-41S T plugs into an available module slot in a compatible TOA 900 Series mixer-amplifier or matrix mixer chassis, adding a transformer-balanced 600-ohm line input with both mute-send capability and a removable terminal block for field wiring. The mute-send function activates when the L-41S T input is in use, transmitting a mute control signal to other connected modules that have mute-receive capability (such as the B-11ST or L-11ST), automatically lowering or silencing lower-priority audio sources. This makes the L-41S T ideal for paging inputs, emergency broadcast connections, or priority announcement sources in multi-zone commercial AV systems where the active source must take audio precedence. The removable screw-terminal block accommodates standard AV wiring practices and allows the block to be pre-terminated off-unit before the module is installed in the chassis. For TOA 900 Series distributed audio systems in commercial spaces, government facilities, or institutional environments, the L-41S T delivers both the signal quality of transformer isolation and the system-control functionality of the mute-send architecture.

Key Features

• Transformer-Balanced 600-Ohm Line Input with Mute Send — Adds a transformer-isolated balanced line input that sends a mute control signal to other modules when active, enabling input priority control in multi-source TOA 900 Series systems.
• Priority Paging and Override Architecture Support — Mute-send function integrates with mute-receive modules (e.g., B-11ST, L-11ST) to automatically suppress lower-priority audio sources during priority announcements.
• 900 Series Plug-In Compatible — Installs in any available module slot in TOA 900 Series mixer-amplifiers and matrix mixers without additional hardware or external controllers.
• Removable Screw-Terminal Block — Detachable connector block supports pre-wiring before module installation, improving installation efficiency in commercial AV rack builds.
• Transformer Isolation — 600-ohm balanced transformer rejects common-mode noise and eliminates ground loops from commercial building power infrastructure in distributed audio systems.