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 |
Product Reviews
Nice semi-black finish, sounds great, perfect Fender replacement.
Great sounding reverb pan that I really like in my Vibroverb that I built; not overly splashy, and has a little darker tone than other standard Fender replacement (which compliments your guitar tone, especially if you are using a Tele with a bright tone because the reverb does not amplify with too much treble like older style pans). In addition to the sound quality, I must also add that the pan is constructed very well, and the flat black finish looks more professional than gloss finishes on other pans.
Finally, I also like that this reverb pan is very affordable making it a nice addition to an amp build or for a replacement / upgrade of another amp. Very happy, and I will buy more of these for my Fender builds.
This reverb tank is outstanding. I put this unit in my 63 reverb copy I built. And I was blown away at the sound and quality. I played this through my champ copy I made and am well please to say the least . Good job Mod!
Just as advertised. Works well in my BF deluxe reverb clone.
Sounds very Fendery.