So I was at my local pawn shop and spotted something cool and unusual. A pair of Audio Technics TK-33 Elecret Headphones. I made sure they were in working order and was offered $40. I've been trying to find some information about them but didn't find much. Then I read through the Head Wize article about different types of headphones. In there it talks about electret depolarization and to check them every 5 to 10 years.
I'm guessing these are 80's vintage and not knowing the previous owner I will have to assume that they have never been replaced.
Question:
How do I tell from listening that the polarizing material needs replacing? I'll assume that it will be a gradual decrease in sound or quality? Is there some method of testing to determine if there are bad? Where would I get replacements for them?
They sound good so far. I've compared them to my Sony 7506 and Grado SR-125 cans. They defiantly sound softer then the others. But not knowing how they are suppose to sound I'm not sure what to think.
Edit:
I did find some info. AKA Audio-Technica ATH-8.
wiki.faust3d.com/wiki//index.php?title=A...
[Edited by Tevian on 03-21-2009 at 09:04 PM.]
posted 03-21-2009 08:26 PM CST (US) 
