[bigjim82]

Does anyone know the impedance of Koss Pro4x's. I bought these back in 81 or 82 and just found them packed away in a box. I hadn't listened to them in over 15 years. I listened to them last night and they sounded pretty good.

 

[Serge44]

250 Ohm

 

[bigjim82]

Quote:

Originally Posted by Serge44 /img/forum/go_quote.gif 250 Ohm

Thanks!

 

[Nagasaki_Kid]

wow, piezoelectric are the super difficult to drive. I have a Pioneer SE500 that lays around doing nothing because the are so difficult to drive. That and the se500 sound so 70s. your koss pro/4x are probable way better. I actually had a chance to chose between the se500 and the koss pro/4x someone offer me both at the same price and boy did I pick wrong but the se500 looked so much cooler.

 

[misterears]

If you still have these Pro4X, I'd like to buy them since I designed them in the early 80s.
 
john_bruss@yahoo.com