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CED Mod Electronics P RMOD 4AB3C1B Reverb Tank MOD® 4AB3C1B Long Decay 2 Spring P1619845CED-P-RMOD-4AB3C1B https://cdnimages.opentip.com/full/CED/CED-P-RMOD-4AB3C1B.jpg Mod Electronics P RMOD 4AB3C1B Reverb Tank MOD® 4AB3C1B Long Decay 2 Spring Manufacturer Part Number: P-RMOD-4AB3C1BCompatible 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® 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.Measurements and Specs Connectorsinput insulated, output grounded Decay Timelong (2.75 to 4.0 s) Grommet Hole Diameter0.2 in. Input Impedance8 Ω Item Height1.5 in. Item Length16.75 in. Item Width4.25 in. Mounting Hole Center to Center A8.75 in. Mounting Hole Center to Center B3.75 in. Mounting Planehorizontal, open side down Output Impedance (Zout)2.25 kΩ Springs2 Thickness0.04 in. Packaging Dimensions17 in. × 5 in. × 3 in. Weight (Packaging)1.75 lbs. Files Sound Sample - Drum Machine ClapAll Models Sound Sample - Drum Machine SnareAll Models Sound Sample - Quick StrumAll Models Sound Sample - StacattoAll Models Sound Sample - Sustained ChordAll Models Sound Sample - Tremolo ChordsAll Models 1619845 797734820928 1.7500lbs 0.00 0.00 0.00
Mod Electronics
28.46 2025-04-19 In Stock
customer review - by , January 1, 2012
5/ 5stars
I bought this item to replace a 4AB3C1B Accutronics reverb tank in my Fender Twin Amp (ProTube series). The Accutronics tank was working, but it wasn't producing as much reverb as it should have been and had begun to feed back if I set the reverb at 7 or higher.This MOD tank sounds far better than the Accutronics tank I replaced. It sounds a lot like the old Accutronics reverb tanks that were made before the company started producing junk. It produces a much smoother sound than current Accutronics tanks.This tank has a far more reverb at any given setting when compared to a current Accurtronics tank, so I find that setting it to 4 is about like setting the old tank to 7. If you set this tank at 7, it sounds like a good working Accutronics tank maxed out. If you max out this tank, it produces more reverb than you probably want.Construction of this item is a little better than that of the tank I replaced. It is the same size as the same model Accutronics tank it. There are 4 clear rubbery feet/mounts that isolate the tank from the amp. Also, when you move this tank around, the springs don't slap the metal quite as easily as with the stock tank.The item was packed in bubble wrap with foam blocks above and below the springs to keep it from slapping around in shipping.I highly suggest using this reverb tank.
customer review - by , November 11, 2011
5/ 5stars
Finally, a reverb tank that's built like, uh, a tank. I dropped it after playing through it the first time and thought it was done for--smacked the concrete hard enough to bend one corner of the chassis back at a 90-degree angle. Turns out it was fine. Definitely a sign of high quality parts built into a sturdy enclosure. In terms of sound, it works great with my Fender Twin Reverb. Mine is early silverface, but from what I've heard this model fits all Twin Reverbs, even the reissues. The effect is pretty lush and deep when dimed, but it stays surfy. EQ things right and you can get a pretty perfect, washed out trail behind your playing without losing your notes.
customer review - by , August 8, 2011
5/ 5stars
High-quality unit. Very cavernous-sounding - long reverb tails. Not exactly the sound I'm after, but if that's what you're looking for, here it is.
customer review - by , August 8, 2011
5/ 5stars
I'm happy with this product.I had trouble with the old reverb tank off and on since I bought the amp new.I've had this in for over a month and it has been hanging in like a trooper.It sounds very much like the part i replaced only more dependable.Good job
customer review - by , August 8, 2011
5/ 5stars
After two accutronics tanks failed on me fairly quickly I decided to give this a try. Reverb sounds great in my Pro Reverb and it looks like the design is an improvement and less likely to fail. So far, so good.
customer review - by , May 5, 2010
5/ 5stars
The Mod tanks, in my humble opinion, sound very good. I aint quite sure if they're better than the USA accutronics, but they're damn close.The reverb is deep and wet, and they really do sound like the real tanks from the 60s.Whatever they did they did it well.
customer review - by , March 3, 2010
5/ 5stars
These tanks are absolutely great. A huge improvement over all current production tanks. I swapped my stock Accutronics tank in my Fender Reverb Unit reissue for the MOD tank and the difference was staggering. Major increase in "drip" and much smoother sound without the piercing brightness of the Accutronics tank. I can't say enough good things about these tanks, highly recommended.
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Mod Electronics P-RMOD-4AB3C1B Reverb Tank - MOD®, 4AB3C1B, Long Decay, 2-Spring

stars Rating 5 | 7 reviews
Brand Mod Electronics
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UPC: 797734820928
SKU: CED-P-RMOD-4AB3C1B
Price: $28.46
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Product Description

Manufacturer Part Number: P-RMOD-4AB3C1B

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® 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.

Measurements and Specs




Files

warning tips WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.
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Customer Reviews
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By MrBigAxe
Date: January 25, 2012
I bought this item to replace a 4AB3C1B Accutronics reverb tank in my Fender Twin Amp (ProTube series). The Accutronics tank was working, but it wasn't producing as much reverb as it should have been and had begun to feed back if I set the reverb at 7 or higher.This MOD tank sounds far better than the Accutronics tank I replaced. It sounds a lot like the old Accutronics reverb tanks that were made before the company started producing junk. It produces a much smoother sound than current Accutronics tanks.This tank has a far more reverb at any given setting when compared to a current Accurtronics tank, so I find that setting it to 4 is about like setting the old tank to 7. If you set this tank at 7, it sounds like a good working Accutronics tank maxed out. If you max out this tank, it produces more reverb than you probably want.Construction of this item is a little better than that of the tank I replaced. It is the same size as the same model Accutronics tank it. There are 4 clear rubbery feet/mounts that isolate the tank from the amp. Also, when you move this tank around, the springs don't slap the metal quite as easily as with the stock tank.The item was packed in bubble wrap with foam blocks above and below the springs to keep it from slapping around in shipping.I highly suggest using this reverb tank.
Rating: 5 stars [5 of 5 Stars!]
By B. Potrykus
Date: November 02, 2011
Finally, a reverb tank that's built like, uh, a tank. I dropped it after playing through it the first time and thought it was done for--smacked the concrete hard enough to bend one corner of the chassis back at a 90-degree angle. Turns out it was fine. Definitely a sign of high quality parts built into a sturdy enclosure. In terms of sound, it works great with my Fender Twin Reverb. Mine is early silverface, but from what I've heard this model fits all Twin Reverbs, even the reissues. The effect is pretty lush and deep when dimed, but it stays surfy. EQ things right and you can get a pretty perfect, washed out trail behind your playing without losing your notes.
Rating: 5 stars [5 of 5 Stars!]
By NoisyDad
Date: August 30, 2011
High-quality unit. Very cavernous-sounding - long reverb tails. Not exactly the sound I'm after, but if that's what you're looking for, here it is.
Rating: 5 stars [5 of 5 Stars!]
By Darren S
Date: August 23, 2011
I'm happy with this product.I had trouble with the old reverb tank off and on since I bought the amp new.I've had this in for over a month and it has been hanging in like a trooper.It sounds very much like the part i replaced only more dependable.Good job
Rating: 5 stars [5 of 5 Stars!]
By Guitar Dad
Date: August 05, 2011
After two accutronics tanks failed on me fairly quickly I decided to give this a try. Reverb sounds great in my Pro Reverb and it looks like the design is an improvement and less likely to fail. So far, so good.
Rating: 5 stars [5 of 5 Stars!]
By Samson Jackson "Two Times"
Date: May 28, 2010
The Mod tanks, in my humble opinion, sound very good. I aint quite sure if they're better than the USA accutronics, but they're damn close.The reverb is deep and wet, and they really do sound like the real tanks from the 60s.Whatever they did they did it well.
Rating: 5 stars [5 of 5 Stars!]
Items 1 - 6 of 7 reviews
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