The Atlas 15 watt metal horn is the industry standard:
So much so, that the US government buys them buy the 100’s…
which is how I got some…US Surplus. NEW with shelf-wear to the box,
warrantied working and like new, or replaced free. 90 days.
This is an 8 ohm horn speaker and can be used with any typical system:
Optimized for vocal range and LONG DISTANCE CLEAR Communications/Announcements/Alarm
SUPER Efficient 104db sensitivity at 1 watt.
This means you need VERY LITTLE power to operate at very high (jet engine) volume.
This is why 15 watt max rating is sufficient for nearly all needs.
Hot
ATLAS SOUND AP-15 WEATHERPROOF PA LOUDSPEAKER HORN HAILER Alarm PA Speaker
$14.25
178
Refund will be given as: Money Back
Condition: New
Model: AP-15
Brand: Atlas Sound
Restocking Fee: No
Type: Loud Speaker
All returns accepted: Returns Accepted
MPN: ap-15
Item must be returned within: 30 Days