
Atlas
Atlas AT100-PA Deluxe 100W Priority Attenuator
Precision zone-level attenuation with priority override — engineered for installations where intelligibility and life-safety messaging share the same speaker line.
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Overview
Specifications
Power Rating
100W
Attenuation Steps
3dB increments
Priority Relay
Yes
Mounting Type
Plate mounted
Brand
AtlasIED
Model
AT100-PA
Frequently Asked Questions
What does the priority relay actually do in a signal chain?
The priority relay automatically interrupts normal audio playback in the zone when a priority signal — such as a paging announcement or emergency alert — is sent to the unit. The relay switches the speaker output to the priority source, ensuring that critical messaging cuts through regardless of what the zone attenuator is set to.
Is this attenuator rated for 70V/100V distributed audio systems?
The AT100-PA is rated at 100W and is designed for use in constant-voltage (70V/100V) distributed audio systems, which are the standard for commercial installed sound — not for low-impedance home audio or studio monitor applications.
How precise is the level adjustment, and will I notice stepping artifacts?
Attenuation is stepped in 3dB increments, which is the industry standard granularity for zone-level control. In most commercial environments the steps are inaudible as level transitions; in critical listening spaces they may be perceptible at borderline settings between steps.
Can this be used in a life-safety or fire alarm notification system?
The priority relay function supports emergency override applications, but any use in a life-safety system must comply with local codes (NFPA 72 and others) and requires system-level certification. Consult with your installing contractor before deploying in a code-governed emergency notification role.
How is the AT100-PA mounted?
It is plate-mounted, designed for flush installation in a wall plate or backbox — standard practice for commercial zone-control attenuators. Verify the backbox dimensions required for your installation during rough-in.