Frequency Response Test – A Public Service from Zero to 180

I would love to know just how many hi-fi enthusiasts back in vinyl’s heyday relied on stereo demonstration recordings to test the performance caliber of their stereo sound system.

Stereo Demonstration - 1

I get the sense that National Lampoon’s Ed Subitzky found this whole business of scrutinizing the quality of your stereo output across the 20-20,000 Hz audio spectrum to be a little dubious, as well as a rich source for mockery, and in 1974 – with assistance from John Belushi and Chevy Chase (among others) – released The Official National Lampoon Stereo Test and Demonstration Record.

One of the album tracks – “Frequency Response” – humorously incorporates audio test tones (e.g., 50 Hz) into a 70s “hippy rock” pastiche that proclaims “Stereo Demonstration” to be the “brand new rock sensation”:

Stereo Demo – Frequency Response = National Lampoon

[Test: Click on the triangle above to test the playback quality of your stereo sound system.]

National Lampoon Stereo Demonstration