Spring reverb module with accutronics blue reverb tank. I did get a small speaker driver wired to the input and a microphone preamp wired to the output, and it sounds legit. Almost all the reverb tanks that you will see are accutronics now called accubell sound inc. Jul 08, 2017 having some more issues with my reverb tank. A reverb tank requires a driver a small power amp to drive the springs, and a preamplifier stage. How to build a tubedriven spring reverb module based on classic ampeg and swartstyle. This is the tank from a fender blues junior amp, so is very common. This simple, inexpensive spring tank reverb circuit is taken from the fender hot rod deluxe. I did unsolder all wires before testing the reverb transformer, the reverb tubes are both 12ax7s and the reverb tank is an accutronics 4ab2a3c. Blues junior reverb issues gearslutz pro audio community.
One combination you definitely dont want is the longdelay tank with the stock reverb pot. Project 1 headphone amplifier that is easily converted for reverb tank drive and recovery. Current production accutronics reverb tank made by belton. In back are trs connectors for balanced, linelevel io.
I also replaced the accutronics blue reverb tank with a belton bs3eb3c1b reverb tank, that i had left over from my ac15c1. I got this cook spring reverb working, but as per schematic had to connect the negative end on the bottom 0. Reverb tank part numbers consist of a seven digit code, i. We do not offer any other shipping methods through our reverb store at this. How to build your own spring reverb unit all things. Take it out of the very nice padded bag it arrived in and just use the cardboard piece for padding. It is recommended that the driver be a current or voltage source with an output rising 6 dboctave with increasing frequency.
If you seek that great spring reverb tone, this is a treasure of a find. Reverb tank accutronics, 8ab3c1b amplified parts reverb. Spring reverb tanks explained and compared amplified parts. And finally some short demos with the specified 3 spring 8eb2c1b tank, just to give an idea of what it sounds like. If you still get no reverb with the correct tank, then do as steve mentioned and see some of the other posts to find out if the problem lies in the drive or the return side of the amp. Mod reverb tanks were carefully designed and researched to bring the warmth. For just a touch of dirt and push, the boss bd2 blues driver has been a perennial favorite for both bedroom players and celebrities such as john mayer and brad paisley. The type 8 is the higher quality version of the type 1. Home amp parts reverb tanks belton reverbs belton rbl2ab3c1b. When you open up the back chassis of the amp, you will see a black pouch, open it up and there is where youll find the stock reverb tank.
And the way fisher did the mixing of the wet and dry signals is better, but it requires more tube sections. Unlike some tanks, revisit reverb tanks include the soft mounting grommets to acoustically decouple the outer channel from the amplifier cabinet. The only goofy thing i had was the inputoutput cables on my amp were backwards from what was on the tank, but that is probably the amp and not the tank. Accutronics accutronics reverb tanks were originally manufactured as a division of hammond organ, and became popular in the guitar industry through their inclusion in the famous fender twin reverb. So you can try swapping tanks but if the new tank doesnt work it doesnt necessarily mean that the problem isnt the old tank unless you know you have the correct. Each digit in the part number represents a specification. Save fender accutronics reverb to get email alerts and updates on your ebay feed. Something neat, if random, that i came across and decided to make a video of. Questions about deluxe reverb reverb tank and cable page. See a chart which lists ac impedance and dc resistance measurements for reverb tanks here. Figure 4 accutronics reverb tank drive coil impedance.
Makes me think that the signal from the tank to the amp is fine, but from the amp to the tank doesnt work. The reason i brought it up at all is that if someone was wanting to copy the organ mate, you could get around this issue by, for example, using a 12bh7 as the reverb driver tube. For those that crave a real spring sound but cant get their hands on a real fender unit, the carl martin headroom reverb pedal could be a great compromise. The decay is still too long for my taste, just as it was in my ac15. Thus, accutronics considers this model a 4spring unit. Reverb module accutronics belton, digilog, adjustable decay. Vox ac30 hand wired 2x12 combo wcelestion blue alnicos. Accutronics 4bb3c1b reverb tank accutronicsbelton reverb tanks 4bb3c1b is used by fender in the original blues deville 4 x 10 combo fender part number 0020489000. I guess a lot comes down to the circuit that is driving the tank, no. Accutronics products and specifications antique electronic. Monoprice 15 watt tube amp page 3 telecaster guitar forum. Who does not love the slight shimmer of a tightly wound steel spring. I attached a reverb tank i didnt know the exact specifications for the appropriate reverb tank made by accutronics model 4bb2b3c to the input, output rca sockets of my amp the tank input to the reverb input, adn the tank out to the reverb out of the amp with a simple rca cable its an ok standard one.
Use this guide to help you determine part number based upon your specifications and application. A reverb tank requires a driver a small power amp to drive the springs, and a preamplifier stage afterwards to make up the substantial gain losses in the springs and return a line level reverb signal. Since the plain jack is the where the reverb foot switch attaches, this is the problem area. Replace the tubes with duplicate tubes, and test the reverb. The reverb on my prri was intermittently cutting out as well. Check out our spring reverb calculator to help you determine what these tank designations mean. Printable version belton rbl2ab3c1b big long reverb tank used in ampeg amps. Note that the information presented in this article is for reference purposes only. So you can try swapping tanks but if the new tank doesnt work it doesnt necessarily mean that the problem isnt the old tank unless you know you have the correct replacement part. If you take the tank out of the bag and flip it over, youll see little molex connectors attaching the tank wires to the little transformers at least that was the case with the accutronics tank that came with my prri. Delivery times for other countries and shipping methods can be found on our shipping information page. Guitar pedal x gpx blog 12 of the best spring reverb. Reverb looks like the stock is a accutronics blue tank. The accutronics numbering system enables you to order either the amc type model with the exact specifications you desire.
Replacement for all fender 6g15 tube reverb models made 19631965 and the reissue 63 reverb. Although the original tank still worked and tested within spec, it was noisy and weak even with new cables, tubes, full recap, etc. The reverb circuit is inserted just before a guitar amplifiers phase inverter in a pushpull amp or just before the driver last gain stage before the power tube in a single. Revisit reverb tanks bringing back the sound of vintage accutronics tanks. Care and feeding of spring reverb tanks elliott sound products. How to troubleshoot the reverb on fender amps our pastimes.
Some have relocated the tank, supposedly with better results, but i wanted something better. And a lower dwell results in less drip on the attack bad for surf. Monoprice 1 x 12 tube amp back in stock a guitar forum. From the schematic floating around online, this amp has a reverb driver transformer with an 8 ohm secondary. This is the standard tank used in fender amps which as also use reverb driver transformer with an 8 ohm secondary. Ill try to put some cardboard under it and some weatherstripping as well. The type 4 is 17 long and uses 2 long springs, each of which consists of two springs joined in the middle. Now you can add reverb to your amplifier or project with the accutronics digilog digital reverb modules. Use it to push your preamp into overdrive or as a line driver if you are experiencing signal. The replacement tanks are all more sensitive than the stock accutronics tank.
It sounds like a mechanical noise, so im taking the tank out again. Accutronics products and specifications amplified parts. The tank tests fine long tail 3 spring accutronics, and the reverb does sound really, really deep and echoey, but has the buzz that is about as loud as the guitar. Belton rbl2ab3c1b big long reverb tank used in ampeg amps. Care and feeding of spring reverb tanks lots of additional information, some of which is unavailable anywhere else. The reason is the solid state reverb driver circuit not having the same impedance as the tube driver and also probably running at different levels. Fender 68 custom princeton reverb ltd edition electric. Rather than order one from the us, i bought an accutronics 8fb2c1b and im.
It was a laughably simple matter of unplugging the old reverb tank, and plugging the new one in. This type was the original style selected by leo fender. The jack has two internal attachments to the amps circuit. The longer tank, used in the hot rod deluxe and blues deluxe, is electrically. Its the blue plastic miniature reverb tank by accutronics. I had the tad in my tank for a while and i liked it very much because the reverb sounds so large and full. In 2009, accutronics reverb was sold to belton who. Hello all, after reading the docs post about upgrading the reverb tanks in 2012 maz jr. Everything i know about spring reverb music thing modular notes. As for the original question, the correct tank for your amp is an accutronics 4bb2c1d. The 1x10 combo packs 35w in 35lbs with 6l6 power tubes. Note newupdated feature on true spring tank reverb pedals. You might be able to read the codes off your tank and identify from the accutronics site, but if you pulled it from an amp, it might have custom options selected by the amps manufacturer.
Ive seen time to time some diy pcbs for a circuit to drive a reverb tank, anyone have any. Turned out it was a bad connector within the reverb tank. Genuine made in usa accutronics reverb tank medium decay long tank insulated input nos9ab2c1b made in usa 10 ohm input. D2967 and txre00002 to be able to use tube amp doctor onlineshop in full range, we recommend activating javascript in your browser. But the downside is that the decay is very long so i constantly have to turn it down. The blue tank has the same impedance as the belton reverb tank that was in my ac15.
The replacement tanks are all more sensitive than the stock accutronics tank, so you may want to replace the reverb control with an audio taper available from my mod kits page to control it better. In reality, we can have a power driver or a current driver, because with a power driver current is amplified as well. Some fender amps use one tube to activate the reverb, and other fender amps use two tubes. Radial tank driver 500 series spring reverb interface module. Accutronics was founded on the principles of providing customers with the highest level of quality, expertise and service in the industry. Once i replaced the stock reverb with the accutronics tank the difference was substantial. Digital reverb accutronics btdr2h woody laboratories. The amp was missing the reverb tank when i got the amp so i dont know what it sounded like before, but it sounded great when i got the tank in the amp. Our goal is to add value to our customers business and strive to provide exceptional qua. I need to mount my accutronics reverb tank in my 1x10 combo amp. While the old one has seen better days i think its at least over 30 years old it still works perfectly. Most spring reverbs are made from accutronics or are copies of this old standby.
Im not sure if it will definitely work but the first tank i would try is the 4ab3c1b. The figure 5 circuit is capable of driving an 8 ohm coil to several times the maximum rated current at. Spring reverb tanks are used to create a unique reverberation effect in guitar amps and organs. Accutronics reverb tank, 8eb2c1b newoldsounds reverb. On the front are knobs for balance and brightness one set for each tank. The endless summer deluxe houses a pair of accutronics reverb tanks inside a 2ruheight rackmount chassis. Adding reverb, an effects loop, and bias control to a 5f6a bassman. It uses a single, less than one dollar tl072cp op amp as the reverb driver and reverb recovery amps. Add reverb, delay, distortion, frequency ranges and other dynamic effects. Accutronics reverb tanks amp parts banzai music gmbh.
The reverb level is noticeably lower with this tank also, making the reverb range much more usable. Accutronics reverb tank 1bc2cic for electric guitar amplifiers 160 ohms. I was originally going to show a photo of one i already have, but it looked a bit too gruesome, so i got a new one to do some further experiments with. We are not just another ems provider, but a true collaborative partner. Vintage accutronics specifications list the following delay times per spring. Hello there i have a mesa blue angel amp with a broken tank its a 3 spring. Applies to shipments to germany with our standard courier service dhl when paid via paypal, credit card or lastschrift. Amplified parts makes no claims, promises, or guarantees about the accuracy, completeness, or adequacy of the contents of this article, and expressly disclaims liability for errors or omissions on the part of the author.
This is where v2a injects post reverb tank signal into the reverb control pot. The reverberation effect is created when an audio signal created by a transducer is sent through one or more springs, the movement of the springs is then converted back into an audio signal by another transducer at the other end, creating the unique sound. It has great tone, and breaks up at a friendly volume level. The greatest spring reverb hi, i am looking at getting a real spring reverb or two for stereo to record my synths and guitars through as well as use to reamp various sounds during mixing. Im confused by all the different opinions on how to mount it.
In 2011 i published a schematic for a little spring reverb driver based on. The blue tank is close to the speaker, so strong lows tend to rattle that little tank. Eminence copperhead 10 speaker and long accutronics reverb tank for big amp tone. Adding effects to your signal path is a great way to alter the sound of your guitar. Read the instruction manual for your fender amplifier. Falling somewhere between your amps natural clean tone and the midsoaked scream of an ibanez ts9, the blues driver hits the sweet spot of articulation and grit. Questions about deluxe reverb reverb tank and cable page 2. Ao28 reverb via 12bh7 grid intercept the organ forum. Reverb tank accutronics, 4ab3c1b, long decay, 2spring. Made for high quality reverb sound but mindful of small spaces. Reverb drive transformer, used in the famous jcm 800 channel switch amps 2210, 2205, 4210, 4211, 4212. When i had the amp on and i hit the springs you could hear the springs through the speakers, but nothing has been effected by my guitar tone.
Watford valves amp parts accutronicsbelton reverb tanks. Twin reverb, super reverb and pro reverb, vintage or reissue amps. Dec 08, 2017 ryan shoots out the stock accutronics 47604 against the mod 4ab3c1c. Have any of you folks used the new, cheap accutronics reverb tanks.
Those fender engineers were obviously inspired when they introduced the springtank reverbs to their core amps, and for many that early fender sound is still the benchmark. Hi, i am looking at getting a real spring reverb or two for stereo to record my synths and guitars through as well as use to reamp various sounds during mixing. The waves reverb function can be switched in and out popfree via the front panel toggle or with a. The reverb driver is a dedicated 23 watt power amp that drives the tank with the power needed to create deep vintage reverb. Accutronics 4db2c1d reverb tank accutronicsbelton reverb tanks 4db2c1d is commonly found in marshall amplifiers with vertical. I tried to cover as many different settings and sounds as i. These modules are great for adding reverb to tube amplifiers, pedal projects or diy synthesizers. I replaced the original accutronics reverb tank in my 1967 princeton reverb with this one. Apr 19, 2010 as for the original question, the correct tank for your amp is an accutronics 4bb2c1d. Allen amplification quality tube guitar amps, kit, parts. Balance varies the amount of wetdry signal, and brightness changes the tone of the reverb effect. See explanation of accutronics reverb tank numbering system here. So, as promised, heres a more indepth look at the fender 68 custom princeton reverb reissue. Theres some good basic level info in there on input driver and recovery design and on different styles of reverb tank so might be a good place to start just reading that.
Antique electronic supply makes no claims, promises, or guarantees about the accuracy, completeness, or adequacy of the contents of this article, and expressly disclaims liability for errors or omissions on the part of the author. Mar 20, 2012 digital reverb accutronics btdr2h first of all, let me say this. Inputoutput impedance are 800 and 2575 respectively. So the reverb drivers z out can be equal to or greater than the tanks z in. Endless summer deluxe, endless summer pedal spring reverbs.