1989 Turbosound scientific test Ad

Using this scientific instrument, we can prove Turbosound speakers are clearly superior to all others.

Click on image above to see the full size version

We make liberal use of all the standard testing devices and procedures to objectively measure the performance of Turbosound enclosures. And, yes, that is one way to prove the technical superiority of our patented designs. There’s no voodoo, no magic.
Conversely, we also remain convinced that the most virtuous testing equipment is still a pair of ears.
So we offer you another testing instrument to use the next time you’re experiencing Turbosound speakers. It’s as effective as anything else we’ve seen.