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Topic: Webb Reverb Tank |
Boo Bernstein
From:
Los Angeles, CA
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Posted 12 Nov 2004 3:44 pm |
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| Does anyone know which type of reverb tank a Webb uses? As always, thanks for the help. Boo |
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Bob Lawrence
From:
Beaver Bank, Nova Scotia, Canada
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Boo Bernstein
From:
Los Angeles, CA
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Posted 17 Nov 2004 8:39 am
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| The Webb I'm looking at is a much older model -- it doesn't have the effects out and in jacks. Does it still use the same reverb tank as the '04 model? Thanks in advance. Boo |
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Eddie Thomas
From:
Macon,Ga.,USA
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Posted 17 Nov 2004 2:51 pm
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| Hello Boo, the unit you need is a 8BB2A1B. You go to search and type in Accutronics, and it will take you to a website, where you can order one of these. $32.50 shipping and all. Sorry I can't remember the name of the company. Eddie |
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James Quackenbush
From:
Pomona, New York, USA
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Posted 17 Nov 2004 6:45 pm
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Here's a link for you
Go to Amplifier Parts and then Reverb tanks, and you will find the one you are looking for ....$22 plus shipping ...Jim
http://www.tubesandmore.com/ |
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Kevin Mincke
From:
Farmington, MN (Twin Cities-South Metro) USA
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Boo Bernstein
From:
Los Angeles, CA
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Posted 30 Nov 2004 2:31 pm
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Okay, I'm coming back to this subject for some help -- and I have complete confidence that the Forum will provide that  I have been given two different numbers of reverb tank number. I believe this is a fairly old Webb (it has no effects in and out and it appears to have seen some miles) and it doesn't have the original reverb tank in it.
The numbers I have been given are 8BB2A1B and 4FB2A1B. If I understand this correctly, the 8BB2A1B is a shorter tank, with an "input" impedence of 190 and "output" impedence of 2250. The 4FB2A1B is a long tank with in "input" impedence of 1475 and an "output" impedence of 2250. As I mentioned, this amp is pretty old. Does anyone know which is the correct one? If I can get an answer today, my amp tech can get one in time to have the amp up and working by my gig on Friday. Thanks in advance for your help! Boo |
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Boo Bernstein
From:
Los Angeles, CA
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Posted 30 Nov 2004 3:36 pm
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| bump -- sorry to be impatient, but I would need to get the order in for the pan ASAP in order to get it before the weekend. Look forward to your advice! Thanks again, Boo |
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Kevin Mincke
From:
Farmington, MN (Twin Cities-South Metro) USA
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Posted 30 Nov 2004 4:20 pm
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Boo
Check this past topic out about reverb tanks for Webb.......
Author Topic: Webb Amp Owners
Kevin Mincke
Member
From: Farmington, MN (Twin Cities-South Metro) USA
posted 20 April 2000 05:08 PM profile send email edit
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Does anyone know what reverb tank (brand/model)is standard in the Webb amp 6-14E. I have a 1978 amp that indicates the reverb is a 1967 (number on top of tank '6718'. This is 17" long by approximately 4" wide with 2 long springs joined in the middle, four total.
Jay Ganz
Member
From: Out Behind The Barn
posted 20 April 2000 07:25 PM profile send email edit
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Most amps these days use reverbs made by
"Accutronics". They're a pretty standard
item, actually. I've tried a few different ones and they all work OK. What's the problem with your's? Do you see something physically broken on it?
Kevin Mincke
Member
From: Farmington, MN (Twin Cities-South Metro) USA
posted 20 April 2000 08:18 PM profile send email edit
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Hi Jay! I pulled the tank & could find nothing wrong with the unit either in the form of a broken spring(s) both reverb and mounting or the green/black in/output wires.
It's symptom is that it is extremely noisy to the point of sounding like a thunderstorm at the slightest of movement.I only run the reverb at about 3 1/2 or 4.
Bob Craven
Member
From: Columbia City, IN, USA
posted 20 April 2000 09:57 PM profile send email edit
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Kevin, I have a 1978 or 79 Webb and had the same thing. I swapped out the tanks with Webb a couple of times and finally found one that didn't bang as bad. Of course I use digital stuff now. And is was a Accurtronic tank that was originally in it.
Bobby Lee
Sysop
From: Cloverdale, North California, USA
posted 21 April 2000 09:25 AM profile send email edit
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All Accutronic tanks are not created equal! I've found that while they look alike, the impedence of the tranducers varies quite a bit from one amp manufacturer to another. For example, I have a Mesa/Boogie tank and a Webb tank that look identical, but they are not interchangable.
If you got your amp used, there's a chance that someone swapped a different reverb tank into it. I have found the tank to be the most unreliable part of the Webb amp. Maybe it's because I transport the amp lying on its back or something, but I've had two tanks fail on me and played with only one spring for a while because of a busted transducer.
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Sierra Session S-12 (E9), Speedy West D-10 (E9, D6),
Sierra S-8 Laptop (D13), Fender Stringmaster D-8 (D13, A6)
Kevin Mincke
Member
From: Farmington, MN (Twin Cities-South Metro) USA
posted 21 April 2000 02:00 PM profile send email edit
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Thanks for all the responses!
I spoke with Jim Webb this A.M. & he advised the correct number for the accutronics tank should be #4FB3A1B which are all 7-digit numbers. These refer to the physical length of tank (17"),in-ouput imp., decay time(long),ground type and mounting plane etc. I have not been able to figure out my problem other than to replace it all together. I was told by another repair place that it could be the small transducers/coil on either end that have a tendency to become unstable or microphonic. There was also a 3-spring tank used in later model Webb's. I would be interested to find out that number.
Kevin
[This message was edited by Kevin Mincke on 21 April 2000 at 03:24 PM.]
Mike Fried
Member
From: Nashville, TN, USA
posted 23 April 2000 03:09 PM profile send email edit
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Kevin, the seven-digit number is the code that indicates the physical and electronic attributes of the reverb tank. To convert to a long three-spring tank, the first digit would be a 9 rather than 4. You also would then probably want to change to a medium-decay rather than a long decay, as long-decay three-spring tanks are very "swimmy" (change the fourth digit from 3 to 2). The "F" and "B" refer to the input and output transducer impedances, respectively, and would not change. The remaining digits refer to other design charecteristics that also would not change. There are a number of third-party sources for Accutronics tanks, so you shouldn't have too much trouble replacing the tank if need be.
Before you go that route, however, you might try remounting the existing tank looser in the cabinet. If it is screwed directly to the inside of the cabinet, try wrapping it in a vinyl "bag" and attach the bag loosely to the cabinet using a wood screw at each end. This will help cushion the tank from mechanical shock and vibration and it shouldn't be as sensitive. If the tank is already in a bag, just try repositioning the mounting screws to "loosen things up" - the tank won't go anywhere and the results can be surpising.
Bill Crook
Member
From: Goodlettsville, TN , Spending my kid's inheritance
posted 23 April 2000 07:28 PM profile send email edit
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kevin....
Most spring tanks are spring mounted to the case, using a short spring in each corner.
Note here that the actual spring unit isnt 17 inches long but a bit shorter in order to be hung suspended in the metal case. now this metal case should also be mounted to the wooden amp case using soft rubber groumlet mountings using screws. Do not tighten down these screws, as the whole reverb case needs to kinda float on the
soft rubber feet.
If the ampifier is bounced around a lot tho, like when our band set up one time on a haywagon, the drummer got to working heavy, all the amps started to bounce and raising @#$%, won't no amount of padding stop that.
(Thats why I originally went to a FX unit)
[This message was edited by Bill Crook on 23 April 2000 at 07:32 PM.]
Kevin Mincke
Member
From: Farmington, MN (Twin Cities-South Metro) USA
posted 26 April 2000 08:47 PM profile send email edit
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I tried many of the suggestions above and the reverb is "much" better but still a little too sensitive for my liking.I have since ordered a new Accutronics tank from Cal at Sound Enhancements (the guy is very helpful) 185 Detroit St. Cary,IL 60013 PH# 847 639-4646. They are the "REVERB" people specifically Accutronics.The unit is a 3-spring #9FB2A1B used in later Webbs vs. the original #4FB3A1B. I also have new mounting springs coming to "try" in the old reverb. WWW.ACCUTRONICSREVERB.COM
b0b
Sysop
From: Cloverdale, California, USA
posted 30 April 2000 09:12 AM profile send email edit
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What's the price on new reverb tanks direct from Accutronics, Kevin?
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-b0b- ... Click Here for Forum Products
-System Administrator
Jay Ganz
Member
From: Out Behind The Barn
posted 01 May 2000 09:40 AM profile send email edit
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I get 'em for around $20.
Kevin Mincke
Member
From: Farmington, MN (Twin Cities-South Metro) USA
posted 01 May 2000 09:29 PM profile send email edit
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Got my NEW Accutronics reverb today! Sounds GREAT! I went with the 3-spring medium delay as my origional was the Hammond/Gibbs 2-spring marked "Twin Reverb" with long decay. The model is #9FB2A1B. Give "CAL" a call as he is very helpful. The unit was $25 plus shipping & very prompt!
Kevin
Yes.....I even got extra suspension springs with the orderto try & salvage my old one!
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Bob Lawrence
From:
Beaver Bank, Nova Scotia, Canada
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Posted 30 Nov 2004 4:21 pm
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TYPE 4:
The industry standard for years, the Type 4 is still manufactured today using Hammond’s original design. Four counter wound and coupled springs deliver superior mechanical performance and the classic sound that helped make the Fender Twin Reverb Amps famous. Outer channel dimensions are 16.75” Length x 4.375” Width x 1.313” Height.
1ST DIGIT = REVERB TYPE
2ND DIGIT = INPUT IMPEDANCE
3RD DIGIT = OUTPUT IMPEDANCE
4TH DIGIT = DECAY
5TH DIGIT = CONNECTORS
6TH DIGIT = LOCKING DEVICES
7TH DIGIT = MOUNTING PLANE
For Example: 4FB2A1B
4 = Type: 4
F = Input - 1475 ohms
B = Output - 2250 ohms
2 = Med decay time
A = Connectors: Input is grounded
1 = Lock: No lock
B = Mounting Plane: Horizontal Open Side Down
==========================================
Type 8 = Designed for applications in which the overall sound quality is important and a compact package is required. Small in size, this three spring reverb approaches the rich textural quality of our larger reverb units. Outer channel dimensions are 9.25” Length x 3.375” Width x 1.313” Height.
ETC..............................
Here's a link to the info you need: http://www.accutronicsreverb.com/prodspec.htm
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Boo Bernstein
From:
Los Angeles, CA
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Posted 30 Nov 2004 4:54 pm
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| Thanks so much, Kevin and Bob. It appears that the 4-sized tank is correct. However, the old post shows that Jim Webb recommended 4FB3A1B (a long delay). The other posts have recommended 4FB2A1b -- which is a medium delay. Does anyone know which is the more appropriate one to use? Thanks again --this is why the Forum is so great! Boo |
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Boo Bernstein
From:
Los Angeles, CA
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Posted 30 Nov 2004 9:15 pm
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| Bump |
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Boo Bernstein
From:
Los Angeles, CA
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Posted 6 Dec 2004 3:44 pm
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| I had a new reverb tank put in to the Webb I'm using (using the number of the tank I was given), but for some reason, the reverb is completely over the top. I barely turn it on and it's very deep reverb. Anyone have any idea why this would be happening? Thanks in advance. Boo |
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Brad Sarno
From:
St. Louis, MO USA
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Posted 6 Dec 2004 6:01 pm
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Hey Boo, what happens if you reverse the tank connections?
Brad
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Jay Ganz
From:
Out Behind The Barn
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Posted 6 Dec 2004 6:23 pm
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Geez...I don't think it would work at all
doing that. |
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Boo Bernstein
From:
Los Angeles, CA
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Posted 8 Dec 2004 6:41 pm
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| I tried reversing the input/output as Brad suggested. Strangely enough, it did help but there was a very loud buzzing. (FYI, thanks to Brad for being extremely helpful all the time!) I am now at a deadend -- I have no idea what to check next. Any ideas (besides using an outside reverb)? Thanks in advance, Boo |
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