Another Outboard Reverb Tank Question

Discussion in 'Amp Central Station' started by voodooblues, Sep 14, 2017.

  1. voodooblues

    voodooblues Friend of Leo's

    Posts:
    3,157
    Joined:
    Sep 12, 2012
    Location:
    Berwyn, Il
    Where does the "drip" come from? I've played tanks with more drip and tanks with less. Is that a tube thing or the type of reverb unit in the tank?
     
  2. moosie

    moosie Doctor of Teleocity Ad Free Member

    Age:
    63
    Posts:
    16,173
    Joined:
    Jul 18, 2010
    Location:
    Western Connecticut
    What I call 'drip' comes from the gain, aka Dwell. Adjustable dwell is the main difference between a 6G15 and a combo circuit.
     
  3. charlie chitlin

    charlie chitlin Doctor of Teleocity Silver Supporter

    Age:
    58
    Posts:
    14,603
    Joined:
    Mar 17, 2003
    Location:
    Spring City, Pa
    My silverface 70's unit has the TMD controls and it doesn't drip.
    Great 'verb, but the surf guys don't dig 'em.
     
    bparnell57 likes this.
  4. voodooblues

    voodooblues Friend of Leo's

    Posts:
    3,157
    Joined:
    Sep 12, 2012
    Location:
    Berwyn, Il
    So is that a pot then? If I wanted more drip would the dwell dial need to be changed? Also, did anyone ever put dwell on an amp?
     
  5. Hexabuzz

    Hexabuzz Friend of Leo's

    Posts:
    2,558
    Joined:
    Dec 13, 2014
    Location:
    Northeast PA
    Changed from what? What are you starting with?
     
  6. Snfoilhat

    Snfoilhat Tele-Afflicted

    Age:
    38
    Posts:
    1,292
    Joined:
    Apr 8, 2016
    Location:
    Oakland, CA
    When you read the reverb tank (like from Accutronics) documentation, it recommends running the tank full on (to saturation) all the time, and then adjusting your amount of reverb (wet/dry mix) at the reverb recovery stage. Most combos go this route. You could think of the Dwell as being at 10 all the time. A few builders have put a Dwell, Mix, Tone into their combos. But if their reverb driver is a Fender/traditional parallel 12AT7, it's already being run 100% into the tank in an amp like a Princeton Reverb. Adding Dwell would only let you turn it down.

    If you have a 6G15, a Vibro-King, or similar, with a 6K6, 6V6, or EL84 driving the tank, that can dump 3+W into it (where only like 1W is necessary), then maybe the Dwell control makes more sense, offers more tone shaping. Can't speak to exactly what contributes to drip sound.

    Good reading:
    https://www.amplifiedparts.com/tech-corner/spring-reverb-tanks-explained-and-compared

    http://www.valvewizard.co.uk/reverbdriver.html
     
    aerhed likes this.
  7. gatorfiend

    gatorfiend Tele-Meister

    Posts:
    354
    Joined:
    Apr 12, 2009
    Location:
    Gainesville, FL
    Several things. I'm still trying to get my reverb drippier. My unit uses a 6K6 like the '63 and has a vintage Gibbs long 2 spring reverb pan.
    Pick aggressively to hit the springs harder. Palm muting and picking way back by the bridge will get you closer as well. Bright tone works best.
    For anyone considering a reverb unit I'd suggest a SurfyBear. Here's a link to a video from the creator of it. It's basically a '63 circuit with FETS replacing the tubes. For the DIY folk, they offer a kit that a lot of people house in tool boxes. Check surfguitar101 and you'll find it's a very popular alternative to a tube unit. Demo starts at abut 2:00.
     
  8. voodooblues

    voodooblues Friend of Leo's

    Posts:
    3,157
    Joined:
    Sep 12, 2012
    Location:
    Berwyn, Il
    Not sure what I'm starting with. If I wanted to get more drip what would need to be changed on the reverb tank?
     
  9. Hexabuzz

    Hexabuzz Friend of Leo's

    Posts:
    2,558
    Joined:
    Dec 13, 2014
    Location:
    Northeast PA
    What amp? Unless I missed it, you haven't given any details about the gear you're using.
     
  10. voodooblues

    voodooblues Friend of Leo's

    Posts:
    3,157
    Joined:
    Sep 12, 2012
    Location:
    Berwyn, Il
    Outboard reverb tank, separate from the amp.
     
  11. Hexabuzz

    Hexabuzz Friend of Leo's

    Posts:
    2,558
    Joined:
    Dec 13, 2014
    Location:
    Northeast PA
    I'm trying to be helpful, but why can't you say what kind of amp, what kind of tank?

    You've given no info whatsoever about your setup!

    Good luck, I'm out
     
  12. voodooblues

    voodooblues Friend of Leo's

    Posts:
    3,157
    Joined:
    Sep 12, 2012
    Location:
    Berwyn, Il
    Do you know what this picture is of? It's not an amp! This question has nothing to do with amps! What does my "setup" have to do with anything? Maybe I'm not wording this question the best way? Am I in the wrong forum? Thanks for trying though. 1505426971825.jpg
     
  13. Hexabuzz

    Hexabuzz Friend of Leo's

    Posts:
    2,558
    Joined:
    Dec 13, 2014
    Location:
    Northeast PA
    I can think of at least 8 different standalone external reverb tanks besides Fender...

    I was trying to find out if you were asking about a specific piece of hardware, and potential mods/problems...

    And yeah, I own one of those "things"... So I'm just a bit familiar with them...

    [​IMG]
     
  14. aerhed

    aerhed Friend of Leo's

    Age:
    60
    Posts:
    2,441
    Joined:
    Dec 24, 2016
    Location:
    Boulder, WY
    That's not a tank. It's a Fender reverb RI. The tank is inside.
     
  15. voodooblues

    voodooblues Friend of Leo's

    Posts:
    3,157
    Joined:
    Sep 12, 2012
    Location:
    Berwyn, Il
    Ok, my apologies if I was unclear although if you do a Google search for "outboard reverb tank" you get the exact picture (among others) that I posted. So, in regards to the thing in the picture I posted, what causes the "drip"? If I were to want more drip what would have to be altered? Is it the internal tank itself, or the pot on the "dwell" dial? Something else?
     
  16. Hexabuzz

    Hexabuzz Friend of Leo's

    Posts:
    2,558
    Joined:
    Dec 13, 2014
    Location:
    Northeast PA
    For starters, have you seen this? Pretty good "Reverb Tank 101"

    https://www.tubesandmore.com/tech-corner/spring-reverb-tanks-explained-and-compared
     
    voodooblues likes this.
  17. Snfoilhat

    Snfoilhat Tele-Afflicted

    Age:
    38
    Posts:
    1,292
    Joined:
    Apr 8, 2016
    Location:
    Oakland, CA
    In a totally unscientific 5 minute trial playing my 6K6-driven reverb combo amp (Dwell-Mixer-Tone), setting controls at 10-5-5, 5-10-5, 5-5-10, etc, I found that contributing to the drip sound most was first
    Mixer (at high settings), followed by
    Tone (at high settings), followed by
    Dwell (at high settings).

    I'm not an amp designer and I haven't used an oscilloscope in years, but the 'drip' noise to me sounds like really high frequencies -- a little like finger noise or when you play a harmonic -- so I'd guess that on some reverbs the high cut filter is removing some of those sounds. All reverbs (whether they have a user Tone control or not) cut both bass (mud) and treble (tinniness) at points in the circuit. I think you might ideally want a spectrograph or something to really see where the drippiness differences come from. Then tweak your filters to preserve those frequencies that contribute most to the sound you like.
     
    voodooblues likes this.
  18. Hexabuzz

    Hexabuzz Friend of Leo's

    Posts:
    2,558
    Joined:
    Dec 13, 2014
    Location:
    Northeast PA
    voodooblues likes this.
  19. Hexabuzz

    Hexabuzz Friend of Leo's

    Posts:
    2,558
    Joined:
    Dec 13, 2014
    Location:
    Northeast PA
    voodooblues likes this.
  20. voodooblues

    voodooblues Friend of Leo's

    Posts:
    3,157
    Joined:
    Sep 12, 2012
    Location:
    Berwyn, Il
    Now we're talking! I'll check those out, thanks for sharing. That's interesting about the 2 vs 3 spring pan, it would be cool to do a side by side challenge and hear the difference.
     
IMPORTANT: Treat everyone here with respect, no matter how difficult!
No sex, drug, political, religion or hate discussion permitted here.


  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.