funny review by Stone Gray in Car Electronics, 2014-02-18
Koolertron CAR Amplifier Alarm 12v Pa Speaker System Mic 5 Sound New
At 300db, this siren is loud enough to easily blow down houses 600 miles away*. Your friends will likely think that there is an earthquake, as the amount of sound energy will cause the ground to rise and fall approximately 13 feet, and measure 8.3** on the Richter scale. At 20x louder than the largest atomic bomb ever detonated, this is sure to grab the attention of your neighbours.
Be sure to connect to a good power supply, as this will draw 400 quintillion (400,000,000,000,000) watts at full power.
Much louder than the 200db siren I reviewed before. (That one only measured 1 on the richter scale) more