testing cassettes from NAC

Discussion in 'Cassettes' started by walkman archive, Mar 25, 2018.

  1. walkman archive

    walkman archive Administrator Staff Member

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    I've talked with people at NAC to ask them if they wish I test their tapes and they agreed.
    They send me two of them:

    Tapes from NAC 05.jpg
    Tapes from NAC 01.jpg Tapes from NAC 03.jpg Tapes from NAC 04.jpg

    I'm currently testing Audio pro, which is a somewhat basic ferric tape.
    They send me two samples of each, but surprisingly one of them arrived in this "shape":

    Tapes from NAC 02.jpg
    Hmm, something's wrong... :hmmm
     
  2. Longman

    Longman Well-Known Member S2G Supporter

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    Well it is definitely "Low Noise" but is "Low Signal" as well.:thumbsdown:

    Can you see if there is a leader in there ?
    I saw / read somewhere that when they make cassettes they start off as C Zeros.
    The last step is to load in the tape. See about 2:50 although the whole video is fascinating.

     
    Last edited: Mar 25, 2018
  3. walkman archive

    walkman archive Administrator Staff Member

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    Yeah, veery low signal ;-)
    Now seriously, it has low signal actually. I had to comoensate the rec sensitivity pushing it almost to the max. More info when I finish testing it.

    What does mean C Zeros. I’m sorry but I don’t understand what that means.
     
  4. Elite-ist

    Elite-ist Well-Known Member S2G Supporter

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    Really low signal with no tape loaded into the shell. That's what a C-Zero is.

    Nando.
     
  5. Longman

    Longman Well-Known Member S2G Supporter

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    When they are making cassettes the standard procedure is to make a C-Zero or C0 with leader tape between the two reels.
    The leader is then cut in the middle, spliced to the tape and wound in. That is what the machine at 2:50 in the video is doing.

    Ever heard a burst of data at the start or end of a pre-recorded tape. That is what tells the machine when to cut the tape and load the next C-Zero.

    This site explains it along with pictures.

    https://soundsgood.co.uk/cassette-duplication/

    p.s If my calculations are right each 3Km "pancake" will have a running time of 44 hours.
     
    Last edited: Mar 27, 2018
  6. walkman archive

    walkman archive Administrator Staff Member

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    Thank you guys. I guess that is a common expression in your language, but there's nothing even close in Spanish.
    BTW: The tape is curious in its response. I have to do more testing to it as it leaved me surprised in some aspects. Now I'm comparing it to a TDK D, AD and SONY HF and HF-S in my SONY K909ES.
     

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