Paging System Amplifier Calculator
70V & 8Ω Paging System Amplifier Calculator
How big of an amplifier do I need? Estimate amplifier sizing for 70V paging (most common) or 8Ω (low-impedance) multi-zone systems. Enter horns and ceiling/wall speakers separately (many facilities use a mix). For a verified design, request a Free Paging System Design or call 800-335-0229. Check out our Paging Amplifier Page here.
70V is standard for paging. 8Ω is common for multi-zone, multi-channel audio systems (often Blaze Audio).
Each zone typically requires its own amplifier channel or zone output.
Paging Horns (70V taps)
If unsure, choose 15W.
Ceiling / Wall Speakers (70V taps)
Most ceiling/wall paging speakers are tapped at 1–2W.
Results
Enter your horn and/or ceiling speaker counts and click Calculate.
Tip: For best intelligibility, design so normal operation stays at or below ~75% of amplifier capacity. For uneven zones, run this calculator per zone or request a verified design.