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Hey--

A while back, when I mentioned in a post that I was looking for a replacement reverb unit for my Peavey VT Artist 240 amp, Danny mentioned to me that I had better make certain that I found the exact reverb tank for that amp.

Of course, being me, I had no idea that there could be differences in reverb tanks! Today I finally had a slow enough day at the office to order the exact replacement, and I discovered the code for identifying reverb tanks.

The one I ordered, from Accutronics, is a Medium Decay 4EB2C1B, long tank with two springs in it. I found that a Vox AC30, some Fender amps, and most larger Peavey reverb amps use that unit. Thanks, Danny, for steering me in the proper direction!!!

Here is the coding scheme for reverb tanks, and you can see that each letter or number has a specific meaning:
PART NUMBERING SPECIFICATIONS FOR TYPE 1 & TYPE 4
EXAMPLE: 4EB2C1B

DIGIT #1 - REVERB TYPE
1 for Type 1 or 4 for Type 4

DIGIT #2 - INPUT IMPEDANCE
A = 8 Ohm
B = 150 Ohm
C = 200 Ohm
D = 250 Ohm
E = 600 Ohm
F = 1475 Ohm

DIGIT #3 - OUTPUT IMPEDANCE
A = 500 Ohm
B = 2250 Ohm
C = 10000 Ohm

DIGIT #4 - DECAY TIME
1 = Short (1.2 to 2.0 sec)
2 = Medium (1.75 to 3.0 sec)
3 = Long (2.75 to 4.0 sec)

DIGIT #5 - CONNECTORS
A = Input Grounded / Output Grounded
B = Input Grounded / Output Insulated
C = Input Insulated / Output Grounded
D = Input Insulated / Output Insulated
E = No Outer Channel

DIGIT #6 - LOCKING DEVICES
1 = No Lock

DIGIT #7 - MOUNTING PLANE
A = Horizontal Open Side Up
B = Horizontal Open Side Down
C = Vertical Connectors Up
D = Vertical Connectors Down
E = On End Input Up
F = On End Output Up

Crazy!!! There are two RCA-type input jacks that the reverb unit has, so the replacement SHOULD be rather straightforward.

--Jim

Hey Jim,

Thanks for posting that code chart. Also those two jacks, one is input the other is output so make sure you connect it right. They are color coded. If you don't hear reverb then reverse the connections.

Hey Jim!
Thanks for posting that info here on the Forum, for I had no idea that you could
get really messed up if you don't replace the old unit with the proper tank......

Hey, Dennis--

You wrote:
>>I had no idea that you could get really messed up if you don't
>>replace the old unit with the proper tank.

Neither did I, until Danny mentioned it! The reverb tank that is currently in that amp, which has been taken from its original combo cabinet and put in what looks like an oversize Bassman head-unit cabinet, is quite small and says, on its label, that it was make by beautiful girls in Minnesota or some such claim! It sounds terrible in that amp, but might sound great in an amp with different specs.

I'm hoping that this new tank will be nice. With shipping, it was a tad over $50.

--Jim

Ampwares.com ,has all the reverb tanks you could need and I think I paid $30.

jtr654 wrote:
>>Ampwares.com ,has all the reverb tanks you could need and I think I paid $30.

You are correct! At ampwares.com the exact same reverb unit is $11 cheaper than what I paid at the vendor I used. Oh, well. The fellow is very nice and informative; in fact, we have been emailing back and forth all night and I ended up getting a Tolex bag for the reverb tank and a liner, too.

It seems to me the old Fender amps had their reverbs in those bags.

Thanks for pointing out that Ampwares.com site; they seem to have EVERYTHING.

--Jim

Hey! Thanks a lot for posting that link! I been meaning to rebuild a cabinet I have, and this place has a ton of great replacement parts and supplies and pretty decent prices.