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RE: dolby 363 with Cat 300 (Dolby SR).

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In Reply to: RE: dolby 363 with Cat 300 (Dolby SR). posted by Chapai on March 03, 2016 at 17:59:01

IMHO the question is "what do you want to achive?"
All these Dolby systems were designed to reduce tape hiss. And lowering the noise floor can increase usable dynamic range a bit.
There are limits to each system. If you go beyond these limits, audible distortions become a problem.
This is only one solution to the noise floor issue.
The most popular one in studios was to use a wider tape run at a higher speed.
That's why only bedroom studios ever used cassette as a recording media.
Of course, there's absolutely no reason why you shouldn't try using it today.
I wouldn't expect much better performance than Dolby Labs got with Dolby C.
Go for if you have the spare cash!

Follow Ups:

RE: dolby 363 with Cat 300 (Dolby SR). - Chapai 21:17:31 03/05/16 (4)
> IMHO the question is "what do you want to achive?"
fun, of course.

> The most popular one in studios was to use a wider tape run at a higher speed.

actually top cassette decks are similar in freq and dynamic range to R2R.
as an option it possible to run cassette at 3� in/s, like a modded Tascam 122MKII/MKIII or any other deck. That I plan to do next.

> Of course, there's absolutely no reason why you shouldn't try using it today.

Yep. I bought this Dolby device and will test it. Just for curiosity.
- Cassette vs R2R - Inmate51 06:34:30 03/12/16 (2)
  "actually top cassette decks are similar in freq and dynamic range to R2R."
  
  I guess that depends on your definition of "similar".
  
  :)
  - RE: Cassette vs R2R - Chapai 17:40:05 03/12/16 (1)
    Nakamichi 1000zxl, Dragon, double speed Tascam 122MKII, well tuned Sony ka3es. Even well maintained Nak 700II. from part of my collection.
    
    and it is no problem to create ultra low noise playback amp from modern opamps and low noise components on 4 layer pcb.
    But still the problem of the noise level at the standard speed, that what I am looking to solve.
    - RE: Cassette vs R2R - vintageperson 06:35:05 10/14/17 (0)
      It is not intended to be used with cassette tapes or slow speed 1/4 track open reel, intended for professional open reel tape machines only. Dolby S was not available for outboard use for cassettes, Dolby S required deck manufacturers meet very stringent electrical, mechnical, and frequency response specifications.
- RE: dolby 363 with Cat 300 (Dolby SR). - bshapiro 03:35:30 03/12/16 (0)
  Back in the day I recorded some live concerts in the field with professional model DBX encoder feeding a Sony TCD5 cassette. It worked great!
  
  Of course the issue with wouldn't just be setup of the Dolby SR unit, but proper calibration and transport stability of the cassette machine.

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