Replacing a Reverb Tank

[CJTopes]

Does anyone know if I can replace a type 9 tank with a type 4?

 

The one that I'm replacing is a 9BB3C1B. I cant seem to find that one but there are some 4BB3C1B tanks to be had.

Any Ideas if I can do that and what the difference is between the two?

[DC Ron]

The 4B is an exact replacement EXCEPT it only has two springs instead of three like the 9B. This is subjective, but in general I prefer the sound of a three spring reverb for the jazzier stuff I play. Others like two spring reverbs for a classic surf music sound. I've had success repairing broken reverbs as well, if you really want to keep what you have. But a replacement 4B can be had for less than $20 so there's really no economy in that. Good luck!

[CJTopes]

I kinda like the fenderish reverb so using the $ will work out fine for me.

 

Thanks...

[peterbright]

Accutronics Reverb Codes

 

 

Reverb Type

1 Short (9¼") 2 spring unit
4 Long (16¾") 2 spring unit
8 Short (9¼") 3 spring unit
9 Long (16¾") 3 spring unit

 

 

Input Impedance

A 8 Ohms
B 150 Ohms
C 200 Ohms
D 250 Ohms
E 600 Ohms
F 1,475 Ohms

 

Output Impedance

A 500 Ohms
B 2,250 Ohms
C 10,000 Ohms

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.)

 

Connectors

A Input and Output Grounded
B Input Grounded, Output Insulated
C Input Insulated, Output Grounded
D Input and Output Insulated
E No Outer Channel

 

 

Locking Devices

1 No Lock

 

 

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