Posted by johnsonad (A) on May 23, 2009 at 15:51:41

I've got an Otari MX5050 MKIII 2 1/4 r2r machine and want to run a direct signal from the heads to a McIntosh C22 preamp. Currently there is not enough gain with the tape head input alone and I was wondering if your transformers would work well with it. The C22 has a 1mohm input impedence and I'm not sure the output of the tape heads yet but am looking for the data. Any recommendations? I have a LL9206 step up for a MC cart and was considering trying it with the tape machine. Bad idea?

• RE: Step up transformer for a r2r machine - Caucasian Blackplate 09:50:31 06/04/09 (0)
  In Reply to: RE: Step up transformer for a r2r machine posted by johnsonad on May 23, 2009 at 15:51:41

  Do also bear in mind that if you take the outputs right off the heads, you will need to provide equalization. On the 5050, this is a very worth wile path to take. A SUT to ease the duties of the preamp isn't a bad idea.
  
  If you do recable for direct output, take care to shield the leads and ground the shield properly.
  
  

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• RE: Step up transformer for a r2r machine - KevinC 16:02:40 05/23/09 (2)
  In Reply to: RE: Step up transformer for a r2r machine posted by johnsonad on May 23, 2009 at 15:51:41

  Unfortunately, this isn't an easy question to answer. It depends on the reproduce head's impedance, among other things. I think that you have the right idea about just trying it to see what happens.
  
  Kevin Carter
  K&K Audio
  www.kandkaudio.com
  
  

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  • RE: Step up transformer for a r2r machine - johnsonad 16:37:48 05/23/09 (1)
    In Reply to: RE: Step up transformer for a r2r machine posted by KevinC on May 23, 2009 at 16:02:40

    Hi Kevin, thanks for the quick response. Other than head impedence, what other data would you need?
    
    

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    • RE: Step up transformer for a r2r machine - KevinC 17:31:41 05/24/09 (0)
      In Reply to: RE: Step up transformer for a r2r machine posted by johnsonad on May 23, 2009 at 16:37:48

      DC resistance and nominal output level at 250nWebers flux
      
      Kevin Carter
      K&K Audio
      www.kandkaudio.com
      
      

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