
cjacek
Analogue Enthusiast
OK, here's what I know.... It's a so called "voice grade" 185nanowebber red oxide tape, no backing, 1mil / 1.5mil tape, introduced in the 1950's (as far as I know) and I'm currently recording with it and really, really dig the tone. It's fairly limited in high / low frequencies and adds a certain "old" character but I'm really curious about its specs... like what is its true frequency response and optimum bias among others... I've been only able to find this:
http://recordist.com/ampex/docs/apxbrochures/tape/600tape.pdf
Page 3 lists the "Response" but I don't understand it.
Any help would be appreciated. Thanks guys! 
http://recordist.com/ampex/docs/apxbrochures/tape/600tape.pdf
Page 3 lists the "Response" but I don't understand it.

