Inside the Daily Grill in Los Angeles, legendary radio disc jockey “Shotgun” Tom Kelly casts a smile from ear to ear as he recalls 1987, the year Wall Street would crash on what would become known as “Black Monday.” But the year was anything but black for car audio, as Kelly recalled, stroking his midnight black beard with his eyes peering from underneath his trademark Smokey-the-Bear-like hat.
“What a year,” said Kelly, a DJ for Los Angeles’ K-EARTH 101, and former spokesman for Alpine Electronics’ Car Audio Nationals (CAN). “Thirteen cities promoting car audio. Going city to city, staying at great hotels. It was just amazing.”

Born out of the parts and concepts of pro and home audio, the car audio industry was on the verge of a revolution as it entered the ‘80s. By the end of the decade, the pounding the industry would make would even reach the footsteps of the Oval Office.

So you designed and built a box and think you know what it is tuned to, but there are a lot of reasons to verify that you are right. Some of these are:
1) To make sure you understand the math behind designing the box
2) To check up on the person that did the design for you
3) To check on your building skills
4) To verify where you are so that when you redesign to deal with an acoustic difficulty that you found you are able to.