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Fender 3 spring reverb tank

Discussion in 'General Electronics Discussion' started by kidthorazine, Nov 14, 2013.

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  1. kidthorazine

    kidthorazine

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    Jan 20, 2013
    I have a Fender 3 spring reverb tank that I would like to set up so it can be used. It has an rc in and rc out and that's it. what do I need and how do I set it up to make the reverb useable?
     
  2. davenn

    davenn Moderator

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    Sep 5, 2009
    maybe some photos and an actual model number of your unit would help us to help you

    cheers
    Dave
     
  3. kidthorazine

    kidthorazine

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    Jan 20, 2013
    Heres a pic of the exact fender reverb tank I have and a schematic of a similar fender reverb unit. Sadly I can't read schematics The maker of the reverb tank is Accutronics Theres no model number
     

    Attached Files:

    Last edited: Nov 15, 2013
  4. KrisBlueNZ

    KrisBlueNZ Sadly passed away in 2015

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    Nov 28, 2011
    Is that circuitry built into it? If so, it's very easy to use. Just feed an audio signal in the input and connect an amplifier to the output. The "clipping" LED will light if the signal amplitude is too high.

    It also requires a DC power source. The voltage range is not shown on the schematic but I would suggest 9~24V DC would be suitable.

    If your unit doesn't have a DC power connection, it may not have the active circuitry. In that case you can drive the input from one channel of a headphone amp.

    Edit:

    In practice, some sort of variable mixing arrangement, such as a linear potentiometer, is used to adjust the proportions of direct signal (at the input) and reverbed signal (from the output) that is fed to the final output of the reverb circuitry block; the signal at the output of the spring line has a huge amount of reverb and you need to mix some of the original signal with it, otherwise you'll just hear a jumble of noise.
     
    Last edited: Nov 15, 2013
  5. Edwin Fitzpatrick

    Edwin Fitzpatrick

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    Dec 26, 2012
    Fender Reverb circuit

    Send me your E-mail address and I will scan and send you a good circuit for the spring reverb ,also will send PC board layout.
    Edwin Fitzpatrick, [email protected]
     
  6. kidthorazine

    kidthorazine

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    Jan 20, 2013

    Attached Files:

  7. KrisBlueNZ

    KrisBlueNZ Sadly passed away in 2015

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    Nov 28, 2011
    I suggest you try Googling driver amplifier for spring line reverb. I did, and one of the results is http://sound.westhost.com/articles/reverb.htm which has some useful information and a link to another site, http://www.accutronicsreverb.com/, which you should look at. Also check out other Google results.

    The preamp you linked to uses an IC that appears to be obsolete, and is probably suitable for driving a spring line unit directly. The characteristics of a spring line driver transducer seem to be a bit variable, but generally similar to headphones, which is why I suggested a headphone amplifier. There are many headphone amplifier circuits around; just use Google to find them. Go for one that's either all-discrete (i.e. no op-amp), or uses one or more op-amps but includes a discrete output stage, for higher current.

    It would also be useful to know the characteristics of your spring line unit; read the Elliott Sound Products page (first link) for details.
     
  8. KrisBlueNZ

    KrisBlueNZ Sadly passed away in 2015

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    Nov 28, 2011
    Edit: Added NOT in the second paragraph (d'oh!)
     
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