Need Help on TDC Speakers

I owned a pair of TDC speakers in the early 70s while still in high school. Don't remember the model number but I do remember they were purchased from Tech Hifi which was an audio retailer in New England at the time. Don't know if they are still in business or not. I believe the TDC line was produced exclusively for Tech Hifi but don't quote me on that. When I purchased (actually my father purchased) the speakers we auditioned JBL, Advent and BIC along with the TDC. The TDC was much less expensive so that's how we went. I thought they were great at the time but haven't seen or heard them in years.
I've seen questions about TDC here before so you might search the archives. Good luck.

TDC was a Tech Hi-Fi house brand manufactured by AAL in Chicago. AAL eventually became MTX.

I owned a pair of TDC speakers during the early 70s while in high school. They were purchased at Tech Hifi to replace my home made speakers. My father bought them for me after we listened to JBL, Advent, BIC and probably a few others. The TDC were made exclusively for Tech Hifi and were an inexpensive alterative to the previously mentioned brands. I enjoyed the heck out of them back then. Don't remember what happened to mine and wouldn't expect them to be worth a lot of $.

I still have a set and love them dearly. They are 350 watts a piece and had 2 10" subs, 2 6" mids, and 2 horns. I too purchased them from Tech-HiFi in the 80's.