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Reverb Tank - Accutronics, 4AB3C1B, Long Decay, 2-Spring
The industry standard for years, the Type 4 is still manufactured today using Hammond’s original design. Counter wound and coupled springs deliver superior mechanical performance and the classic sound that helped make the Fender Twin Reverb Amps famous.
- Replaces: 4AB3C1B
- Solid, sturdy construction
- Type: Long (2 Spring) tank
- Decay: long decay
- Input: 8 Ω
- Output: 2,250 Ω
- Connectors: Input insulated/output grounded
- Locking: No lock
- Mounting: Horizontal/open side down
Compatible amps include tube reverbs from 1963-1990 such as the Princeton Reverb, Vibrolux Reverb, Deluxe Reverb, Super Reverb, Pro Reverb, Twin Reverb, Quad Reverb, Super Six Reverb, Vibrosonic Reverb. This also includes all reissue equivalents. Also includes Fender® ’63 Reissue Reverb Unit, Fender® Concert II, Mesa Boogie® MK2C plus other models, LAB® Series L5, L7, L9, Koch® Powertone I, B-52® AT-100. Also compatible with some speaker-driven, type F, vintage Ampeg® amps such as B12X, B12XY, Echo Jet, Echo Twin.
New production Accutronics tank.
Questions about reverb tanks? See our tech articles for more information.
SKU:
P-RK-4AB3C1B
Item ID:
003283
UPC/EAN:
609722126717
Accu-Bell Sound Part Number:
4AB3C1B
Brand:
Accutronics
Connector Type:
Decay Time:
Mounting Plane:
Number Of Springs:
Tank Length:
Type:
RoHS Compliant
| Connectors | input insulated, output grounded | |
| Decay Time | long (2.75 to 4.0 s) | |
| Input Impedance | 8 Ω | |
| Mounting Plane | horizontal, open side down | |
| Output Impedance (Zout) | 2.25 kΩ | |
| Springs | 2 |
| Packaging Dimensions | 17 in. × 5 in. × 3 in. | |
| Weight (Packaging) | 1.75 lbs. |
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Questions and Answers
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1 answers
will this work in a Music Man rp100 amp
Asked by Anonymous on September 8th, 2015.
September 8th, 2015
Staff MemberTop Contributor
Always pay close attention to the series of letters and numbers associated with each reverb tank. In this case 4AB3C1B. If these numbers match your existing tank then this replacement will be compatible. Please refer to our tech corner article explaining reverb tanks for a full explanation of what these numbers signify in terms of determining compatibility with your amp.
1 answers
Will this work in my Yamaha G100-112?
Asked by Anonymous on September 12th, 2015.
September 14th, 2015
Staff MemberTop Contributor
Always pay close attention to the series of letters and numbers associated with each reverb tank. In this case 4AB3C1B. If these numbers match your existing tank then this replacement will be compatible. Please refer to our tech corner article explaining reverb tanks for a full explanation of what these numbers signify in terms of determining compatibility with your amp.
1 answers
Will this work in my peavey xr 600b powered mixer ?
Asked by Anonymous on September 13th, 2015.
September 14th, 2015
Staff MemberTop Contributor
Always pay close attention to the series of letters and numbers associated with each reverb tank. In this case 4AB3C1B. If these numbers match your existing tank then this replacement will be compatible. Please refer to our tech corner article explaining reverb tanks for a full explanation of what these numbers signify in terms of determining compatibility with your amp.
1 answers
Will this work in my amplifier traynor ycv20-2 custom valve?
Asked by Anonymous on October 11th, 2016.
Hi, we believe you need a 4EB3C1B. Please confirm this by consulting your manual.
1 answers
Will this work in my PRS 2 Channel Custom 50?
Asked by Anonymous on October 16th, 2016.
We do not have a cross-referencing database on these amps. You would need to examine your existing reverb tank and see if there is an 8 character code on it such as 4AB3C1B. Pay attention to the second and third character. These represent your input and output impedance. When replacing a tank these must match. For more information, please see our tech article on reverb tanks: https://www.amplifiedparts.com/tech-corner/spring-reverb-tanks-explained-and-compared
1 answers
will this work in a Fender Hot Rod Deluxe?
Asked by Anonymous on December 30th, 2016.
No, you need a 4EB3C1B reverb tank.
1 answers
Can I replace the ruby reverb tank in my '65 Princeton reverb reissue with this?
Asked by Anonymous on January 18th, 2017.
Yes, the 4AB3C1B is the tank used in Princeton Reverb reissues.
1 answers
Hi. Sorry for my English: I'm french. But i want to buy a ab3c1b reverb tank. can you tell me how to proceed ? thank you for answering. greets. Hervé Glaza.
Asked by Anonymous on September 21st, 2017.
Please email us directly and we will help you order this part: [email protected]
1 answers
Will this work for my 78 Fender Super Twin Reverb?
Asked by Anonymous on January 30th, 2020.
January 31st, 2020
Staff Member
We are unable to find any definitive information on what tank was used in that amp, but if you remove the original tank from the amp, it should have identifiable markings that should help indicate what tank you need.
1 answers
Before I order a new tank from you, here is the question...
Input DC resistance I've measured is about 1 ohm..
I see your input impedance is 8 ohms..
Can tell me if DC ohm meter resistance at the input is 1 or greater please..
Thanks.
Asked by Anonymous on February 5th, 2020.
February 6th, 2020
Staff Member
The only accurate way to test these is with an impedance meter. The readings you are getting with your multimeter aren't abnormal.
1 answers
Will this work in my Fender Deluxe 1965 Reissue?
Asked by Anonymous on April 23rd, 2020.
April 23rd, 2020
Staff Member
Yes, the original 1965 Deluxe Reverb (included in the list of compatible amps above) uses the same tank as the new reissues. As Fender use Accutronics tanks in their amps currently, this is most likely the exact tank that came in the amp in it's stock form.
1 answers
Will work for my 1970 fender twin reverb?
Asked by fred.owsley on June 21st, 2020.
June 22nd, 2020
Staff Member
You may want to double check a schematic but the 4AB3C1B is used in most Twin Reverb amps.
1 answers
Is it possible to build ( in my case ket it build) a driver for the spring reverb and use it as a guitar Fx pedal?
Asked by Anonymous on September 21st, 2020.
September 21st, 2020
Staff Member
We offer a kit that uses a full size reverb tank, but it is not in a pedal format: https://www.amplifiedparts.com/products/effects-kit-mod-kits-wave-spring-reverb
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Product Reviews
Every time I buy something from Amplified Parts, I always get exactly what I was hoping for. In this case, the reverb tank went into a Vintage 1965 Super Reverb and it sounds wonderful. There is nothing like a real spring reverb when its working correctly. I will remember to shop Amplified Parts first when I need tubes or restoration parts. Great pricing, guick shipping and, the descriptions are accurate.
Ordered as a replacement for a defective tank in a vintage Lab Series L7 amplifier. Easy fix and works like a charm...beautiful dripping reverb for that authentic surf and early rock n'roll music, or just a hint to musically elevate your tone! No issues with the workmanship. Definitely recommended.
Ordered as a replacement for my Princeton Reverb. Sounds lovely, definitely has the classic Fender character. Only giving four stars because both transducers were loose. Not a huge deal, nothing a drop of superglue couldn’t fix. Would recommend but check the transducers for movement before you install.