I may have a answer for you and this info go's back to the 1940's. I found
a wealth of info on audio equipment. so much that I down loaded the
the articles from magazines and comments from manufacturers of the product they have brought to market, like a talk with Rudy t Bozak or Sal Marantz. So try www.americanradiohistory.com look to your left and scroll down to H click on the picture and you will see the first year the magazine was published and all the months it came out. enjoy!!
a wealth of info on audio equipment. so much that I down loaded the
the articles from magazines and comments from manufacturers of the product they have brought to market, like a talk with Rudy t Bozak or Sal Marantz. So try www.americanradiohistory.com look to your left and scroll down to H click on the picture and you will see the first year the magazine was published and all the months it came out. enjoy!!