Mark V Reverb Tank

[Bekanor]

Does anyone know the model number of the accutronics reverb tank that comes with the Mark V?

 

[jb's 52]

How did you find out it was an Accutronics?
I didn't find anything in the manual.

 

[phyrexia]

accutronics is the industry standard. also, i believe it says on the tank itself.

 

[MrMarkIII]

The part number is stamped on the tank.
The alphanumerics refer to to specs for a particular model, such as:
EXAMPLE: 9EB2C1B
DIGIT #1 - REVERB TYPE
9 for Type 9 - Different types refer to spring length and how many springs.

DIGIT #2 - INPUT IMPEDANCE
A = 10 Ohm
B = 190 Ohm
C = 240 Ohm
D = 310 Ohm
E = 800 Ohm
F = 1925 Ohm

DIGIT #3 - OUTPUT IMPEDANCE
A = 600 Ohm
B = 2575 Ohm
C = 12000 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

As long as the connectors and impedances match, you should be able to switch short springs for long springs, etc., as long as the tank will physically fit the cab. Note well the "mounting plane" (DIGIT #7). Reverb tanks for combos face down, while tanks in heads face up.
Hope this helps

 

[Bekanor]

That did help tonnes actually, I just picked up my Mark and looked on the bottom and there it was.

Thanks!

For reference, it's 9AB2A1B

 

[Shaner30]

The part number is stamped on the tank.
The alphanumerics refer to to specs for a particular model, such as:
EXAMPLE: 9EB2C1B
DIGIT #1 - REVERB TYPE
9 for Type 9 - Different types refer to spring length and how many springs.

DIGIT #2 - INPUT IMPEDANCE
A = 10 Ohm
B = 190 Ohm
C = 240 Ohm
D = 310 Ohm
E = 800 Ohm
F = 1925 Ohm

DIGIT #3 - OUTPUT IMPEDANCE
A = 600 Ohm
B = 2575 Ohm
C = 12000 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

As long as the connectors and impedances match, you should be able to switch short springs for long springs, etc., as long as the tank will physically fit the cab. Note well the "mounting plane" (DIGIT #7). Reverb tanks for combos face down, while tanks in heads face up.
Hope this helps

So if you have a combo and would like to convert to a head, do you need a different reverb tank?

 

[MrMarkIII]

The part number is stamped on the tank.
The alphanumerics refer to to specs for a particular model, such as:
EXAMPLE: 9EB2C1B
DIGIT #1 - REVERB TYPE
9 for Type 9 - Different types refer to spring length and how many springs.

DIGIT #2 - INPUT IMPEDANCE
A = 10 Ohm
B = 190 Ohm
C = 240 Ohm
D = 310 Ohm
E = 800 Ohm
F = 1925 Ohm

DIGIT #3 - OUTPUT IMPEDANCE
A = 600 Ohm
B = 2575 Ohm
C = 12000 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

As long as the connectors and impedances match, you should be able to switch short springs for long springs, etc., as long as the tank will physically fit the cab. Note well the "mounting plane" (DIGIT #7). Reverb tanks for combos face down, while tanks in heads face up.
Hope this helps

So if you have a combo and would like to convert to a head, do you need a different reverb tank?

See DIGIT #7 (above):
Reverb tanks for combos face down (mounting plane B),
while tanks in heads face up (mounting plane A).

 

[Shaner30]

So if you have a combo and would like to convert to a head, do you need a different reverb tank?

No, you can use the one in your combo.
But you will need a reverb tank cover.
The one in a combo is wood. You'll need the metal cover.

btw the Acutronics model 9AB2A1B is the same reverb tank Mesa has been using in most if not all of the Mark series amps going back to at least the IIB. Maybe even farther back.

Thanks gts. I sent you a PM regarding the mark V.