Hello, new here obviously and dropping the obligatory "I'm not spam" message. Grew up with some very early 90's Koss drivers (TD-70 Digital and NOVA 66, both of which are difficult to find info on, pics, or even get used) pounding away at the ears and am here in a quest to learn more about these earlier headphones to either create a modern contemporary from a Frankenstein build, or hopefully find other period cans that ran same drivers to see if memory was glossed over after all the years or not before jumping on the Grado bandwagon.
Having an engineer type of mind that always took things apart and experimented with what worked and what didn't, I learned that packing the cups and completely sealing them (at roughly14 years old and over a decade before anyone knew what the internet was) actually helped them get louder w/o breaking apart, nor distorted the plastic speaker material when powered by an amp with a ton of dynamic headroom as early as they would have w/o mods. Ended up here by random chance after seeing a thumbnail for someone that posted pics of varying Koss drivers along with detailed info them, and figured it was a great place to ask questions and get some nostalgia flowing.
