Reverb Tank - Mod® 4AB3C1B, Long Decay, 2-Spring
- 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.
The Mod Electronics Reverb Tanks are high quality upgrade units. Some of the major differences between the Mod®s and other reverb tanks are that the Transducers are wired directly to their respective RCA jacks as opposed to current production tanks where Transducers are connected by a detachable plug to their respective RCA jacks. This makes the tanks less receptive to any outside interference. The original Hammond Accutronics tanks from the 1960s were also wired directly to their respective RCA jacks. In addition, very close attention has been paid to the spacing and size of the lamination of the Transducers resulting in a more vintage like tone.
Questions about reverb tanks? See our tech articles for more information.
Connectors | input insulated, output grounded | ||
Decay Time | long (2.75 to 4.0 s) | ||
Grommet Hole Diameter | 0.2 in. | ||
Input Impedance | 8 Ω | ||
Item Height | 1.5 in. | ||
Item Length | 16.75 in. | ||
Item Width | 4.25 in. | ||
Mounting Hole Center to Center A | 8.75 in. | ||
Mounting Hole Center to Center B | 3.75 in. | ||
Mounting Plane | horizontal, open side down | ||
Output Impedance (Zout) | 2.25 kΩ | ||
Springs | 2 | ||
Thickness | 0.04 in. |
Packaging Dimensions | 17 in. × 5 in. × 2.5 in. | ||
Weight (Packaging) | 1.2963 lbs. |
Sound Sample - Drum Machine Clap | All Models |
Sound Sample - Drum Machine Snare | All Models |
Sound Sample - Quick Strum | All Models |
Sound Sample - Stacatto | All Models |
Sound Sample - Sustained Chord | All Models |
Sound Sample - Tremolo Chords | All Models |
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Product Reviews
This tank is a direct replacement for the "Accutronics & Belton 64063" tank in my Fender Super Sonic 22 combo. The stock tank was acting up. This MOD tank sounds much better than the stock tank. It gets pretty surfy wet if you dial it up.
Great Reverb tank. I bought it to replace the unit in my new Fender Super Sonic. The Mod I received was exactly what was in my Fender SS. No difference at all. Check your amp before you decide to replace the tank. I thought I was buying an upgrade but it turns out I didn't need it.
Better than factory. Very pleased (94 twin)
Replaced bad tank in Fender Super Sonic. Now she's right for the first time. Sounds great. Better than factory tank. Now she sings,cries. Price was great. Delivery time was great. Thanks AP. I have my amp back.I give you 5 stars !
Bought this to replace a broken accutronics reverb tank that originally came with a recently aquired used Fender Deluxe Reverb Reissue. I have to say that I am extremely satisfied. It has a nice full decay and leans towards the bright side of the spectrum. The decay is nice and smooth without any "echo" type effect. Only time will tell how long it will last but for the price, It's as good as it gets. I would recommend this tank to anyone looking for a bright, smooth, and long decay in their reverb.
Direct replacement for the tank in my late 70's Ampeg VT-40 combo. Great value.
Replaced both tanks in my Mesa Boogie MK2C and Mesa Express,
these replacements are better made and offer a better sound overall than the original Accutronics and cheaper!
Great value, buy one!
Replaced the verb in a 80's Peavey Backstage. This reverb is far superior to the stock one. Nice size...fit perfectly. Very smooth sounding.
Great price, got it fast, My Fender Deluxe has reverb again. It fit right in the bag, plugged in the same way, done deal. Thanks Amplified Parts.
This is an EXTREMELY wet reverb tank. Used it as a replacement in my '65 Deluxe Reverb Reissue and it is much deeper and wetter sounding than the stock Accutronics (that died). In fact, I now have to roll my reverb knob back to 2 or else I am in deep surf tones! Would be a great tank for amps with the 3 knob reverb so that you could keep the dwell, but turn down the mix some.