Vehicle horn England, developed a standard electric car horn in 1910. Car horns are usually electric, driven by a flat circular steel diaphragm that has an electromagnet acting on it in one direction and a spring pulling in the opposite direction. The diaphragm is attached to contact points that repeatedly interrupt the current to that electromagnet causing the diaphragm to spring back the other way, which complete the circuit again. This arrangement opens and closes the circuit hundreds of times per second which creates a loud noise like a buzzer or electric bell, which sound enters a horn to be amplified. There
Sound the Alarm (Saves the Day album) Conley performed a few solo shows across the east coast. In March 2007, Parada left the group and was replaced by Classic Case/Glassjaw drummer Durijah Lang. In April and May, the band went a co-headlining tour with Say Anything. "Sound the Alarm" reached number 67 on the "Billboard" 200 chart and number four on the Independent Albums chart. According to review aggregator Metacritic, the album received generally favourable reviews. The music of "Sound the Alarm" divided reviewers, with some praising it, while others were unimpressed. AllMusic reviewer Corey Apar viewed the album as a return to the "aggressive pop-punk nature"