Vintage AVID Min Diffraction Speakers ad, Color / 2 Pages, Hi Fidelity 10/1978.
(NOTE: Purchase 3 of my Vintage Stereo ads from High Fidelity Magazine and get the lowest priced one for free. Either request an invoice before paying, or if you pay for all 3 I will refund you the lowest priced one. Of course I'll combine shipping as well.)
The main picture shows the full 2 page ad (assembled in a photo editor.) You will receive two separate pages cut from the magazine.
Please see my other vintage stereo magazine ads from the High Fidelity magazine.