[QuadList] digital audio with quad--Nippon Columbia apparentlyused a Shibaden SV-7000 Quad

[Don Norwood]

Ted:

Perhaps there is more to this story than you've uncovered.  No doubt the Shibaden was used, but perhaps this machine was too.  You'll notice that the control panels are NOT the standard VR-1000 controls.  It was obviously used for some special purpose.....

Don Norwood
Digitrak Communications, Inc.
www.digitrakcom.com
  ----- Original Message ----- 
  From: Ted Langdell 
  To: Quad List 
  Sent: Sunday, June 05, 2011 12:32 AM
  Subject: Re: [QuadList] digital audio with quad--Nippon Columbia apparentlyused a Shibaden SV-7000 Quad




  Right company... wrong machine, though...


  On Jun 4, 2011, at 11:05 AM, LARRY wrote:


  Anyone ever see this?


    LE Odham
    Engr-Tech
    TAMIS Archive
    Knoxville,Tenn.
    <vr1000.jpg>


  Not sure whether anyone saw my post regarding the use of Quad to record digital audio:


  And the answer is:
  Denon, a subsidary of Nippon Columbia in Japan.


  Details are found here:
  http://www.aes.org/aeshc/pdf/fine_dawn-of-digital.pdf


  In 1969-1971, Denon leased an NHK stereo PCM recorder and conducted numerous
  test recordings. Retired Denon engineer Dr. Takeaki Anazawa told the author: 'We got a
  lot of ideas about improvement of (the) system from these experiences." Denon's tests
  also resulted in two commercial albums, the first commercial use of PCM digital technology.
  Indeed, the first commercial digital recording was Nippon Columbia NCB-7003,
  "Something" by Steve Marcus, released January 1971. The only other commercial release
  to come out of these early Denon/NHK recordings was Nippon Columbia NCC-8004,
  "The World of Sutomu Yamashita," according to Anazawa."


  Satisfied that PCM digital was an improvement over analog tape, Denon engineers
  set out to develop their own VTR-based system. Their goals were improved audio quality
  and multi-track recording capability, which then made the system viable in most commercial
  recording settings of the 1970s. 


  In 1972, Denon unveiled the DN-023R, an 8-channel system featuring 13-bit resolution and a sampling rate of 47.25kHz. The system used a Hitachi (then called Shiba Electronics) 4-head open-reel broadcast VTR as its
  storage format. 


  (TL asks:  Would this have been a Shibaden SV-7000, seen here transformed into a Merlin ME-68 on LabGuy's website?
  http://www.labguysworld.com/Merlin_ME68.htm)


  Here's a photo  of the Denon machine from:
  http://www.sempre-audio.at/images/Report/100_Jahre_Denon/Denon_DN-023R_PCM-Recorder_670.jpg


  Looks line an SV-7000 to me.)







  Anazawa noted: "We used the low-band mode of the VTR, for black and white (video). The reasons were stronger (performance) than color mode for tape dropout and less cost." Anazawa said, with the DN-023R, "we could edit music recordings and cut (LP) discs using advanced (preview) head" to control lathe automation.
  Denon deployed the DN-023R system immediately and used it to make commercial release
  recordings throughout the 1970s.


  There's a Billboard magazine article with pictures here:
  http://books.google.com/books?id=fSQEAAAAMBAJ&pg=PT31&lpg=PT31&dq=Denon,+digital+audio,+2%22+Quad&source=bl&ots=UNjJuD5cy8&sig=cZ4Cep2qnya9iyqz_KWY26Tdk2U&hl=en&ei=CRTpTZfwDJL0swOyg4T3DQ&sa=X&oi=book_result&ct=result&resnum=2&ved=0CCUQ6AEwAQ#v=onepage&q&f=false


  More can be found in the AES Journal, Volume 21 Number 7 pp. 535-541; September 1973.


  Ded




  Ted Langdell
  Secretary




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