TOA AT-100-AM – 100W Volume Control Attenuator

Product Overview

The TOA AT-100-AM is a 100 W constant-voltage volume control attenuator on a Decora-style wall plate for 70 V and 100 V distributed speaker systems. It lets staff set the local listening level in a zone by stepping the speaker power down in fixed increments. As a TOA 100 W volume attenuator, the AT-100-AM is built for commercial rooms that need simple, durable wall-mounted level control. It mounts in a standard electrical box and wires inline between the amplifier and the zone's speakers.

The AT-100-AM gives a room its own volume control without touching the central amplifier, which is exactly what conference rooms, retail areas, and multi-purpose rooms need when occupants want local adjustment. It is a constant-voltage (70/100 V) attenuator rated to handle up to 100 W of speaker load, so it can serve a sizeable group of distributed speakers on one control. Level is set in thirteen defined steps from full output down to off, giving repeatable, predictable adjustment rather than a vague sweep. The device installs in a standard wall box and lands on a 14-gauge-capable terminal, so it integrates with normal low-voltage rough-in. Because it is passive and inline, there is no power supply to fail and no programming to maintain. The white Decora-style plate blends with typical room finishes and switch plates. Specifying the correct wattage rating is important: matching the attenuator to the connected speaker tap total preserves audio quality and protects the control. For commercial distributed-audio zones, the AT-100-AM is a practical, long-lived volume control.

Key Features

• 100 W Power Rating — Handles up to 100 W of 70/100 V speaker load, enough for a sizeable zone on a single control.
• 13-Step Attenuation — Sets level in fixed increments from full output to off for repeatable, predictable adjustment.
• Constant-Voltage Design — Works inline on 70 V and 100 V distributed audio lines between the amplifier and the speakers.
• Standard Box Mounting — Installs in a common electrical wall box with a 14-gauge-capable terminal for easy rough-in.
• Decora-Style Finish — White plate blends with typical room switch plates and interior finishes.
• Passive Reliability — Requires no power supply or programming, so there is little to fail or maintain over its life.

Technical Specifications

Specifications are per the TOA datasheet and subject to change without notice.