TOA B-11S T – 900 Series Line Input Module

Product Overview

The TOA B-11S T is a transformer-balanced line input module with a mute-receive function for the TOA 900 Series mixer-amplifiers. It adds a balanced line input to a 900 Series chassis while allowing the channel to be muted remotely during priority paging. As a TOA 900 Series line input module, the B-11S T accepts mixer outputs, signal processors, and wireless receivers through a removable terminal block. It suits commercial paging and background-music systems that need automatic ducking of music when an announcement is made.

The B-11S T installs into an open module slot on a compatible TOA 900 Series amplifier, expanding inputs without outboard hardware. Its transformer-balanced front end rejects common-mode noise on long cable runs, protecting program audio in large distributed systems. The defining feature is its mute-receive control: when a higher-priority source such as a paging microphone is keyed, the module's channel can be muted so the announcement is heard clearly over background music. This automatic priority behavior is exactly what schools, retail, and transit environments rely on for intelligible paging. The removable terminal block lets technicians pre-wire and service the card without disturbing neighbors, and routing and power come from the host frame. Typical sources include a music player feed, a DSP output, or a wireless receiver that should duck under live announcements. The result is a clean, balanced input that participates in the system's priority logic. For integrators standardizing on TOA, the B-11S T is the input card to choose when muting and ducking matter.

Key Features

• Mute-Receive Function — Allows the channel to be muted automatically when a higher-priority paging source is keyed for clear announcements.
• Transformer-Balanced Input — Rejects common-mode noise across long balanced runs to keep program audio clean in distributed systems.
• 900 Series Plug-In Module — Installs into a TOA 900 Series mixer-amplifier slot and draws power and routing from the host frame.
• Removable Terminal Block — Speeds field wiring and lets technicians service the card without disturbing adjacent modules.
• Priority Paging Ready — Ideal for retail, education, and transit paging where music must duck under live announcements.