Chris Kehring

Scott Owens' Monster SPL (Sound Pressure Level) vehicle breaks the 180 dB barrier (also known as 'The Wall') in competition. Can store owners take advantage of this feat to 'Break records on Sunday, Sell woofers and amps on Monday?' By Brett Solomon SPL competitions, or Sound Pressure Level competitions really started to garner attention in the late 1990s when vehicles started to look less like vehicles you would find on the street and more like vehicles you might see welded together on Monster Garage. To the casual observer, a look into the rear of these vehicles allows you to view an installation more suited for a

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