Results 1 to 8 of 8

Thread: Reverb Tanks, how does mounting style matter?

  1. #1
    Supporting Member Randall's Avatar
    Join Date
    Jan 2013
    Location
    Cape Coral, FL
    Posts
    1,936
    Thumbs Up/Down
    Received: 175/0
    Given: 37/0
    Rep Power
    8

    Reverb Tanks, how does mounting style matter?

    Got a 90's PRS HG-70 solid state amp that was once Ed King of Lynyrd Skynyrd's main stage amp. Actually, he had two, and my customer just bought them both. One of the problems was the reverb wasn't working. Well, I don't know why, all three springs were out of the tank and floating aimlessly around the main board!

    Anyway, the Accutronics model model is no longer offered as far as I can tell. It is 9BB2C1C, and it mounts vertically in the head. CED has the 9BB2C1B, but it mounts horizontally. I do find one exact model used in CA for $43, but I am wary. How much of a big deal is finding a vertically mounted version? The amp isn't touring any time soon, I don't believe.

    0 Not allowed! Not allowed!
    It's weird, because it WAS working fine.....

  2. #2
    Old Timer Leo_Gnardo's Avatar
    Join Date
    Sep 2012
    Location
    Dogpatch-on-Hudson
    Posts
    5,804
    Thumbs Up/Down
    Received: 877/15
    Given: 898/0
    Rep Power
    12
    With all the specs offered on the current proliferation of reverb tanks, they seem to have left out mounting position. OTOH I've used generic tanks that are available and found no harm in positioning them as needed. If that wasn't the case might have to instruct owners of certain amps to only play them if they're tipped on one side or the other, or upside down.

    0 Not allowed! Not allowed!
    Enjoy. Every. Sandwich.

  3. #3
    Supporting Member loudthud's Avatar
    Join Date
    May 2006
    Location
    Near Dallas Texas
    Posts
    3,462
    Thumbs Up/Down
    Received: 124/0
    Given: 73/1
    Rep Power
    17
    Ever notice that there are several holes where the springs that suspend the reverb assembly from the outside chassis could be attached ? I've often wondered if that was the only difference between tanks of differing mounting options. Can you get a good picture of the tank offered in CA ?

    2 Not allowed! Not allowed!
    WARNING! Musical Instrument amplifiers contain lethal voltages and can retain them even when unplugged. Refer service to qualified personnel.
    REMEMBER: Everybody knows that smokin' ain't allowed in school !

  4. #4
    Lifetime Member Enzo's Avatar
    Join Date
    May 2006
    Location
    Lansing, Michigan, USA
    Posts
    31,408
    Thumbs Up/Down
    Received: 1,329/7
    Given: 0/0
    Rep Power
    53
    even if the long springs are gone, if the short springs are in place you can look where they are mounted. Move the ones on your new pan to the same settings.

    On the other hand, just stick the pan in there and see if it works as it is. The pan innards will naturally sag from gravity, so they mount the innards lower or higher or nearer one end a little so the innards don't hit the frame.

    3 Not allowed! Not allowed!
    Education is what you're left with after you have forgotten what you have learned.

  5. #5
    Old Timer J M Fahey's Avatar
    Join Date
    Oct 2007
    Location
    Buenos Aires, Argentina
    Posts
    10,990
    Thumbs Up/Down
    Received: 1,126/18
    Given: 853/24
    Rep Power
    25
    Yes, all tanks are basically the same, just mounting springs are attached to different holes, as Loudtyhud said, so springs *when sagging* which is unavoidable, stay more or less centered.
    Of course if a certain tank is optimized (Id even call that "biased") for, say vertical mounting, connectors up and you mount them connectors down, you have actually worsened the problem.

    But look at them, put them in the amp suggested position,and check whether delay springs are fine or dangerously close to bottom.

    IF so, loosen the lower mounting springs, tighten the upper ones, so you get them in a safer position.
    As said above, I suspect you can turn one model into another by hacking a little.

    Of course a Factory which orders then by the 100s or 1000s does not want to waste time and gets them pre .... ummmm .... "biased".

    4 Not allowed! Not allowed!
    Juan Manuel Fahey

  6. #6
    "Thermionic Apocalypse" -JT nickb's Avatar
    Join Date
    Dec 2009
    Location
    Devon, UK
    Posts
    3,270
    Thumbs Up/Down
    Received: 488/1
    Given: 443/1
    Rep Power
    13
    Looky here

    If you don't adjust the mounting tray height you risk the springs hitting the deck or the tray hitting the chassis depending on the mounting orientation.

    3 Not allowed! Not allowed!
    Last edited by nickb; 03-15-2019 at 05:16 PM.
    Experience is something you get, just after you really needed it.

  7. #7
    Lifetime Member Enzo's Avatar
    Join Date
    May 2006
    Location
    Lansing, Michigan, USA
    Posts
    31,408
    Thumbs Up/Down
    Received: 1,329/7
    Given: 0/0
    Rep Power
    53
    Like anything else, the problems are POTENTIAL. Slap one in there. If it works reliably you are done. If it clangs a bit, then take it out and adjust the corner springs.

    1 Not allowed! Not allowed!
    Education is what you're left with after you have forgotten what you have learned.

  8. #8
    Supporting Member Randall's Avatar
    Join Date
    Jan 2013
    Location
    Cape Coral, FL
    Posts
    1,936
    Thumbs Up/Down
    Received: 175/0
    Given: 37/0
    Rep Power
    8
    Thanks guys, it is as I suspected. I have ordered a new one and will adjust as/if needed.

    0 Not allowed! Not allowed!
    It's weird, because it WAS working fine.....

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Grounding and reverb tanks
    By yldouright in forum Maintenance, Troubleshooting & Repair
    Replies: 16
    Last Post: 05-26-2018, 04:26 AM
  2. Where to get a schatten-style bobbin mounting plate/ flywheel.
    By shawnl in forum Tools and Coil Winding Gear
    Replies: 16
    Last Post: 10-11-2012, 11:32 PM
  3. Replies: 0
    Last Post: 08-27-2012, 07:26 PM
  4. Em field from tube amp rack style mounting
    By Thurgood in forum Maintenance, Troubleshooting & Repair
    Replies: 4
    Last Post: 02-08-2011, 01:29 PM
  5. Reverb with two tanks???
    By riscado in forum Theory & Design
    Replies: 9
    Last Post: 09-24-2006, 12:06 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •