Reverb Tank - Mod® 4DB2C1D, Medium Decay, 2-Spring
- Replaces: 4DB2C1D
- Solid, sturdy construction
- Type: Long (2 Spring) tank
- Decay: medium decay
- Input: 250 Ω
- Output: 2,250 Ω
- Connectors: Input insulated/output grounded
- Locking: No lock
- Mounting: Vertical/connectors down
Compatible amps include Marshall™ JCM800 (select models) Marshall™ Valvestate (select models). Can also be used as a replacement/upgrade for the smaller tank in Fender® FM210 and 212 models.
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 | medium (1.75 to 3.0 s) | |
Grommet Hole Diameter | 0.2 in. | |
Input Impedance | 250 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 | vertical, connectors down | |
Output Impedance (Zout) | 2.25 kΩ | |
Springs | 2 | |
Thickness | 0.04 in. |
Packaging Dimensions | 17 in. × 5 in. × 3 in. | |
Weight (Packaging) | 1.75 lbs. |
![]() | All Models |
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Product Reviews
Working out great.
Put this in a Marshall Lead 100 MOSFET head that originally had a long delay 4DB3 tank.
This medium is more to my liking & need.
Excellent upgrade when used in Korg AC15TB (Marshall factory) as a replacement for the Accutronics.
VOX AC15TBX (UK Made in the Marshall Factory): The MOD 4DB2C1D is a perfect retro fit and replacement for and original Accutronics Cary Illinois tank. The wire leads are soldered in place verses the micro plugs. Exceptional powder coat / paint on the tank that is extra heavy to protect it from foot pedals and other items stored in the amp. Much improved reverb signal vs the original where the difference it dramatic. Excellent replacement for the Korg made in UK VOX AC15TB or TBX. This model amp was made in the Marshall Factory in Milton Keyes UK. I also ordered the right angle RCA 3 foot RCA Male to RCA Male which is extra heavy duty.