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Re: How do those Spring Reverbs work in guitar amps?

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oldschool@tubes.com wrote:
> On Sun, 19 Mar 2017 22:49:52 -0500, "Dave M" <dgminala@mediacombb.net>
> wrote:
>
>>>
>>> This site seems like a good source of information:
>>>
>>> https://www.amplifiedparts.com/tech-corner/spring-reverb-tanks-explained-and-compared
>>>
>
> That is exactly the info I was looking for. The PDF file includes
> pictures too, and is very useful. Thanks for the link.
>

You're welcome.

AmplifiedParts personnel kindly sent me Document 126-00005, which was
written in 1978. It appears that only the two spring variety of tank was
manufactured at that time. Document 126-00005 is now available at:
http://crcomp.net/electronic/reverb/accutronics_document_126-00005.pdf
Here's what it says about the mechanical physics of the tank:

        Accutronics' electromechanical reverberation devices
    consist of input and output transducers and a set of transmission
    springs. These components are mounted on an aluminum channel,
    which  is  usually supported by four springs to an outer case
    or channel.
        Briefly, the device operates as follows: An electrical
    signal applied to the input transducer is translated by the
    magnetic circuit to a torsional force on two small cylindrical
    magnets. The magnets are mechanically coupled to a pair of
    transmission springs and the torsional motion is propagated
    slowly along the spring path. At the output, a replica of the
    original input signal is produced by the action of magnets
    again coupled to the transmission springs. The signal has now
    been delayed by some period, determined by the diameter, wire
    gauge, and length of the transmission springs. Additionally,
    most of the torsional energy is reflected back to the input
    transducer. The result is a multitude of reflections each
    smaller in amplitude than the last. The delay time of each
    additional reflection is 2T since the torsional motion must
    travel the spring path twice to reach the output transducer.

Thank you,

--
Don Kuenz KB7RPU

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Thread

How do those Spring Reverbs work in guitar amps? oldschool@tubes.com - 2017-03-18 19:12 -0500
  Re: How do those Spring Reverbs work in guitar amps? rickman <gnuarm@gmail.com> - 2017-03-18 20:47 -0400
    Re: How do those Spring Reverbs work in guitar amps? Phil Allison <pallison49@gmail.com> - 2017-03-18 18:11 -0700
  Re: How do those Spring Reverbs work in guitar amps? Phil Allison <pallison49@gmail.com> - 2017-03-18 18:08 -0700
    Re: How do those Spring Reverbs work in guitar amps? Don Kuenz <g@crcomp.net> - 2017-03-19 05:08 +0000
      Re: How do those Spring Reverbs work in guitar amps? Phil Allison <pallison49@gmail.com> - 2017-03-18 22:38 -0700
        Re: How do those Spring Reverbs work in guitar amps? jurb6006@gmail.com - 2017-03-19 02:46 -0700
          Re: How do those Spring Reverbs work in guitar amps? Phil Allison <pallison49@gmail.com> - 2017-03-19 04:25 -0700
            Re: How do those Spring Reverbs work in guitar amps? jurb6006@gmail.com - 2017-03-19 06:01 -0700
            Re: How do those Spring Reverbs work in guitar amps? jurb6006@gmail.com - 2017-03-19 07:46 -0700
      Re: How do those Spring Reverbs work in guitar amps? "Dave M" <dgminala@mediacombb.net> - 2017-03-19 22:49 -0500
        Re: How do those Spring Reverbs work in guitar amps? Phil Allison <pallison49@gmail.com> - 2017-03-19 22:31 -0700
          Re: How do those Spring Reverbs work in guitar amps? "Michael A. Terrell" <mike.terrell@earthlink.net> - 2017-03-23 19:01 -0400
            Re: How do those Spring Reverbs work in guitar amps? Phil Allison <pallison49@gmail.com> - 2017-03-23 16:24 -0700
              Re: How do those Spring Reverbs work in guitar amps? "dcaster@krl.org" <dcaster@krl.org> - 2017-03-23 16:37 -0700
                Re: How do those Spring Reverbs work in guitar amps? Phil Allison <pallison49@gmail.com> - 2017-03-23 17:46 -0700
                Re: How do those Spring Reverbs work in guitar amps? "dcaster@krl.org" <dcaster@krl.org> - 2017-03-23 18:05 -0700
                Re: How do those Spring Reverbs work in guitar amps? "Michael A. Terrell" <mike.terrell@earthlink.net> - 2017-03-25 03:18 -0400
              Re: How do those Spring Reverbs work in guitar amps? "Michael A. Terrell" <mike.terrell@earthlink.net> - 2017-03-25 03:16 -0400
          Re: How do those Spring Reverbs work in guitar amps? Jasen Betts <jasen@xnet.co.nz> - 2017-03-26 19:36 +0000
        Re: How do those Spring Reverbs work in guitar amps? oldschool@tubes.com - 2017-03-20 14:04 -0500
          Re: How do those Spring Reverbs work in guitar amps? Don Kuenz <g@crcomp.net> - 2017-03-21 17:22 +0000
        Re: How do those Spring Reverbs work in guitar amps? Don Kuenz <g@crcomp.net> - 2017-03-20 19:27 +0000
    Re: How do those Spring Reverbs work in guitar amps? George Herold <gherold@teachspin.com> - 2017-03-20 12:24 -0700
      Re: How do those Spring Reverbs work in guitar amps? Clifford Heath <no.spam@please.net> - 2017-03-21 09:14 +1100
        Re: How do those Spring Reverbs work in guitar amps? George Herold <gherold@teachspin.com> - 2017-03-20 17:04 -0700
          Re: How do those Spring Reverbs work in guitar amps? "dcaster@krl.org" <dcaster@krl.org> - 2017-03-20 20:06 -0700
            Re: How do those Spring Reverbs work in guitar amps? jurb6006@gmail.com - 2017-03-21 00:18 -0700
            Re: How do those Spring Reverbs work in guitar amps? George Herold <gherold@teachspin.com> - 2017-03-21 05:55 -0700
              Re: How do those Spring Reverbs work in guitar amps? "dcaster@krl.org" <dcaster@krl.org> - 2017-03-21 06:46 -0700
      Re: How do those Spring Reverbs work in guitar amps? Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-03-21 03:15 -0400
  Re: How do those Spring Reverbs work in guitar amps? bitrex <bitrex@de.lete.earthlink.net> - 2017-03-19 22:25 -0400
    Re: How do those Spring Reverbs work in guitar amps? Phil Allison <pallison49@gmail.com> - 2017-03-19 19:52 -0700
      Re: How do those Spring Reverbs work in guitar amps? bitrex <bitrex@de.lete.earthlink.net> - 2017-03-19 23:14 -0400
        Re: How do those Spring Reverbs work in guitar amps? bitrex <bitrex@de.lete.earthlink.net> - 2017-03-19 23:14 -0400
        Re: How do those Spring Reverbs work in guitar amps? Phil Allison <pallison49@gmail.com> - 2017-03-19 20:32 -0700
          Re: How do those Spring Reverbs work in guitar amps? bitrex <bitrex@de.lete.earthlink.net> - 2017-03-20 00:01 -0400
            Re: How do those Spring Reverbs work in guitar amps? Phil Allison <pallison49@gmail.com> - 2017-03-19 22:32 -0700
          Re: How do those Spring Reverbs work in guitar amps? jurb6006@gmail.com - 2017-03-20 03:52 -0700
          Re: How do those Spring Reverbs work in guitar amps? bitrex <bitrex@de.lete.earthlink.net> - 2017-03-20 15:18 -0400
            Re: How do those Spring Reverbs work in guitar amps? Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2017-03-20 21:28 +0200
              Re: How do those Spring Reverbs work in guitar amps? bitrex <bitrex@de.lete.earthlink.net> - 2017-03-20 16:26 -0400

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