Tape Project Forum

Tape Machines => Tape Tech => Topic started by: johnsonad on June 13, 2010, 11:23:15 AM

Title: Prerecorded tape EQ
Post by: johnsonad on June 13, 2010, 11:23:15 AM

New to this still and a little confused.  Did all prerecorded 71/2 4 track tape use NAB EQ?  The boxes don't let you know and you have the London's with FFRR or FFST among others.  If they didn't all use NAB, what did they use and how do you identify this?  Did certain brands all use one EQ vs. another?

Thanks in advance :)

Aaron

Title: Re: Prerecorded tape EQ
Post by: ironbut on June 13, 2010, 02:21:28 PM

I have quite a few tapes and I've yet to find one that was recorded in something other than NAB.
Almost all of them were duplicated here in the US. For example, the Ampex facility made the London tapes.

Title: Re: Prerecorded tape EQ
Post by: johnsonad on June 13, 2010, 10:58:40 PM

Thanks Steve :)

Title: Re: Prerecorded tape EQ
Post by: eugen_syd on June 14, 2010, 09:08:36 PM

I think in 7-1/2 ips you can have only NAB equalization! I could be wrong.

Eugen

Title: Re: Prerecorded tape EQ-
Post by: U47 on June 14, 2010, 10:51:20 PM

I've owned some Columbia/EMI tapes that were CCIR eq. at 7 1/2 ips.

R Brown