Durable and weatherproof construction.

High SPL, crisp and penetrating sound.

Voice coils precisely wound on an aluminum bobbin for efficient heat dissipation.

The AU-40XT features a built-in 100V transformer with easily selectable power/resistance contacts by changing the position of the rotary switch on the back.

Driver unit that complies with European Union regulations and conforms to low voltage standard EN 60065.

IP 66 protection rating is provided when mounted in a sound horn, against foreign particles such as dust and water jets, making them ideal for outdoor use.