Which reverb tank for a '74 dual showman reverb?

[siore]

I have a '74 Dual Showman Reverb, with master volume. There is no reverb, and I'm hoping you guys can tell me which reverb tank I should get, so I could get it working again.

Accutronics? Someone told me I should go for the 4AB3C1C (not 4AB3C1B), because it mounts to front of the amp head baffle board. Can anyone help me verify this please?

Thanks

[GearHeadFred]

"Someone" gave you good advise!

From the horse's mouth: http://www.accutronicsreverb.com/Type4.htm

[dtube]

I usually replace dead Fender tanks with the 3-springs tanks, specifically 9AB2C1B. IMO, they sound more lush than the 2-spring tanks. One other note - the 2-spring can you were pointed to is a long-decay version (4th digit indicates length). The stock Fender tanks in the older amps are pretty close to the current Accutronics medium-decay. I installed one long-decay tank and had to switch it out a week later because the customer hated the long tail (I didn't like it either - too murky IMO). So, if you go with the 2-spring tank, you would want 4AB2C1B. But, these notes are just my opinion - YMMV.-Darren

[siore]

Interesting. So a 3-spring (Type 9) with medium decay might sound closer to the original fender reverb tank? Also, any undesirable effects if I take a B (9AB2C1B or 4AB2C1B) and mount it on the back of the front grill? :huh

[dtube]

You'll need to go through the Accutronics product pages to find a version suitable for verticle mounting. Offhand, I can't remember which digits specify verticle or horizontal mounting.

Tonally, I believe the medium-decay sounds closer to the older tanks. But, that is JMHO.
-Darren