We also offer low noise option to eliminate potential issues. Poor plate by vacuumsound reverb vst plugin and audio units. The reverb driver distortion problem is well documented on the net over many years. In 1957, german company elektromesstechnik emt introduced the model 140 plate reverb. These are some notes about what the module does, how it was designed. One of the very first artificial means of replicating reverb was the plate reverb. Reverb driver on deluxe reverb type models distortion. I plan to build a plate reverb inside a 19 rack shelf keep in mind this is purely experimental and i currently have everything i need except the plate which is being cut in both steel and aluminium for tests and should arrive in the next week or so and the driver. The ecoplate i, designed by jim cunningham, was the first in the ecoplate series. Audio is fed into the driver, which vibrates the plate. With a fender blackface style reverb amp you can pull the reverb driver tube out altogether. The preferred oem tube of 50sera fender tweed champ and deluxe amplifiers the tungsol 6v6 has a geometry designed to safely handle the higher voltages used in guitar amps plus heavier plate and grid materials. The best reverb driver tubes discussion in amp central station started by. Tubes for the fender pro reverb the fender pro reverb amplifier requires the following components.
Both have less gain but lower plate resistance than the 12at7. If you want to fiddle with reverb driver tubes v3, you could try a 12bh7 andor a 12av7 in the reverb driver location. There are some circuits that use the reverb driver in different ways to provide the gain for the boost or lead modes. By the time the signal gets to the end of the reverb tank, it is transformed. I know fender typically used 12at7 for reverb send stages. Problem with silverface pro reverb broken resistor in reverb.
Bob buontempo diy plate reverb brian roth technical services. Plate reverb is the sound of vibrations through metal, while rooms are the sound of vibrations through air. This is my secondgeneration solidstate guitar reverb circuit. The amplified current is sent to the reverb tanks input transducer see tank detail below. Aug 23, 2016 pcm vintage plate reverb plugin windows build v1. Oct 14, 20 a plate reverb uses a plate of sheet metal to generate the reverb. I would like a selection of reverb voices in one pedal but i. Learn what makes abbey roads plate and chamber reverb so unique, and how to use them effectively in your music with waves audio. As i have shown in the audio examples at the end of part 1, a reverb unit can be used as an effect instead of a sound reinforcement tool. Plate reverb is an audio effect that is derived from and added to an original sound that adds a series of echos that occur in such rapid succession that they arent heard as single events but as a smearing out of the original sound. The reverb recovery tube is another matter, thats a 12ax7 and one triode is a gain stage for the verb channel.
One of the first types of artificial reverb, the plate reverb was originally produced using a magnetic driver think of a speaker coil to initiate drive vibrations in a large sheet of metal. It falls into the category of small and compact sized pedals with its dimensions of 60mm in width, 96mm in depth and 55mm in height. This is the 5th episode in mikes plate reverb reconstruction with upgrades series. Ernie ball 2223 super slinky electric guitar strings. Driven moderately and with the right frequencies a spring verb starts to leave surf territory and drifts toward plate like sounds. If i get to this point i install a 560pf at greater than 1kv across the anode to cathode pins of the driver tube, as in the fender 75 amp. I think the idea of making a driver which will keep the plate free like in the. The super champ and the prin rev ii use the output of the reverb driver transformer. I know fender often used the 12at7 for reverb, and i think the much higher plate current is involved to drive the reverb transformer and send transducers a lot harder. It is no longer strong in terms of current nor big in terms of voltage. Teh 7879 vol boost cicuits use just the reverb driver tube. The fidelity is much improved over the earlier design, it is suitable for use as a frontend to a guitar amplifier. Low noise tube, selected for best symmetry and balance.
Give you a little more leverage on the reverb tranny there. Reverb became one of the fundamental pillars for the music of the 60s, defining the sound of vintage recordings. What are the differences between plate and spring reverbs. A pair of 12at7s in parallel has a maximum plate dissipation of. When active, vibrations can be seen emanating from the driver and moving over the plate, but clicking it converts these to a waveform display.
The void reverb pedal by deadbeat sound is said to push the audience into an eerie void mode with its simple yet modern evocative tones. But we dont want the plate current to be too high, or the plate resistor r4 will need to be too small, lowering the output impedance of the driver. Everything i know about spring reverb an mk2 version of music thing modulars spring reverb module went on sale this weekend. Plates can also be good for augmenting small room captures to make a room appear slightly bigger. For reverb driver, we recommend smaller plate 12at7 such as electroharmonix 12at7ehwc. Feb 14, 2020 eventually inventions like spring reverb and plate reverb came about and slowly became smaller and more affordable. For use in the phase inverter position, we recommend the triode matched option. Everything i know about spring reverb music thing modular. The reverb plate was the first really serious artificial reverberation technology, and was adopted by numerous studios before the advent of affordable digital reverb. Jul 20, 2016 i have a silkyn super 50 that uses a 12ax7 for the reverb circuit, that is typically weak. So the reverb drivers z out can be equal to or greater than the tanks z in on the recovery side, its a bit different. But if theres a good room sound, the plate provides a kind of sonic caulking to fill in the gaps in the room sound. In can fill in space between notes to thicken playing or just make you feel more comfortable in a dry room. A transducer is placed in the center of this plate.
I also read somebody talking about the idea of using guitar pickups. Heres an example of an emt140 plate reverb at work. Hammond ao44 reverb driver converted into a guitar amplifier duration. In the last episode we saw the new pickups and the mounting. The spring reverb, in particular, sounds convincing enough to justify a permanent place for the mxr reverbeven if you use the other voices sparingly. Put your ear up to any large metal item and tap on it and you will hear how steel plates were used to create reverb. And this brings us to one of the most breathtaking reverb sounds of them all. Lxp native reverb plugin bundle aax, vst, au, rtas. It can also be used to simulate a large space and make your guitar huge sounding for ambient effects. The trick is to make sure it is the reverb overdriving problem first.
Build your own spring reverb tape op magazine longform. Sound moves through the metal of a plate anywhere from ten to twenty times faster than it does through the space of a room. This is of utmost importance in applications where a speaker is mounted in the same enclosure as the reverb, such as a guitar amp or organ. Tubes for the fender quad reverb the fender quad reverb amplifier requires the following components. Nos vintage 1970s genuine fender guitar amp reverb driver. A bad tube can also cause excessive hum in the reverb. Tweed champ and deluxe amplifiers the tungsol 6v6 has a geometry designed to safely handle the higher voltages used in guitar amps plus heavier plate and grid materials. A speaker driver attached to one end of the plate would make it vibrate. Plate reverb unlike hall, chamber, and room reverbs, plate reverbs dont mimic a realworld acoustic space.
The main functional component is a large metal plate within a soundproof box see header photo, which is vibrated by an output driver much like that in a loudspeaker above centre. A brief but complete guide to guitar reverb anatomy of. This is of utmost importance in applications where a speaker is mounted in the same enclosure as. Reverb driver question12ax7 vs 12at7 a guitar forum.
Analog hardware alternative to plate reverb page 2 gearslutz. Conceptually, a plate reverb is not entirely unrelated. The 12au7 half would drive most reverb tanks without a transformer. The earlier versions dont sound as good to my ears for reverb but i forget how to tell which is which. Plate reverb plate reverbs are an electromechanical device that vibrates a large sheet of metal to create reverb sounds. Problem with silverface pro reverb broken resistor in reverb driver circuit discussion in amp central station started by jman72, may 10, 2017. It featured an extended high frequency response, a rugged plate suspension system along with a 3pole filter in the driver amp, giving the unit a very smooth and musical sound.
Sep 30, 2016 befitting a reverb pedal with very functional aims and, potentially, customers who approach experimental reverb reticently, the plate and spring reverbs are very good. Nov 12, 2017 everything i know about spring reverb an mk2 version of music thing modulars spring reverb module went on sale this weekend. I have a silkyn super 50 that uses a 12ax7 for the reverb circuit, that is typically weak. Another variant of artificial reverb, spring reverb uses you guessed it a spring with a driver at one end and a pickup at the other to capture the vibrations created.
A plate reverb is a thin sheet of metal, suspended via springs or sometimes clamps under tension inside a rigid frame. Richsounding reverb driver also great for headphone amps. This is the most common reverb driver transformer equivalent to 125a20b, 037099 and classictone 4018034. Dan dietrich andrew bird,neko case, head engineer at wall to wall recording in chicago walks us through how the emt 140 plate reverb. These are some notes about what the module does, how it. The waves abbey road reverb plates plugin gui provides a pictorial representation of a plate, with some very retrolooking controls arrayed below it.
The main difference is that when you use the reverb as an effect, you usually want it to be heard as opposed to using it in. Perfect for high plate voltage amplifiers like the fender deluxe reverb. I prefer a higher fidelity reverb sound and ive always added 1 meg pots to the grid of the driver tube on reverb amps ive built to that effect. Problem with silverface pro reverb broken resistor in.
As the metal resonates, a pickup captures the sound. Attempted plate reverb working title louis ocallaghan. Plate reverb is similar to spring reverb in that it uses a driver to amplify a signal onto a plate of metal. The driver, at maximum expected input level, should drive the coil to near saturation.
Fender reverb driver for deluxe reverb, pro reverb, super reverb and twin reverb. The quality of a plate reverb allows us to extend the tail of the snare or toms without creating the effect of a room within a room. Allow me to describe and illustrate my attempt at a homemade plate reverb. With drums, i wouldnt use a plate as the only reverb.
Dave hunter provides this background on fenders parallel 12at7 reverb circuit in the context of a 1963 fender twin reverb. This tube does make a good reverb driver where tone is less important than ruggedness. A plate reverb uses a plate of sheet metal to generate the reverb. I have collected a few reverb tanks, all from solid state amps, but havent had the time to mess with them yet. Reverb hall of fame 7 best reverb pedals 2020 pmt online. A transducer similar to the voice coil of a speaker is used to vibrate the plate, and then contact mics on the surface of the plate pick up the vibrations.
In reality, we can have a power driver or a current driver, because with a power driver current is amplified as well. A 12ax7 with a mosfet or tube follower would work though. The relatively neutral aspect of plate reverb also makes it a good companion to room reverb. A little larger than a fullsize mattress standing on its edge, the emt 140s mechanism consists of a large piece of sheet metal fitted with a driver transducer and one or more pickups. In the next episode youll get to see mikes oneoff reverb tube amplifiers with a more detailed explanation of how they work with the driver and. The tube must be biased to a plate current sufficient to supply the necessary signal 4. The 12ax7 is a poor choice since is usually runs at about 1 ma of plate current.
Pcm92, pcm96, pcm96 surround, pcm96 surround digital lxp native reverb plugin bundle. I really feel like i should be saying more, but there isnt much more to say. Selected with balanced systems and recommended for guitar amps to improve overall response. Ok, thats a bit of an understatement its more than that. Ge 12at7 another nos tube that is still available this one will give you a little more upper mids and clarity while being slightly smoother in the treble frequencies. An audio driver is placed in contact with the metal plate.
Fast forward to today and you can find these effects being produced digitally in tiny computer chips embedded in keyboards, guitar effects pedals, and as vst plugins on your computer. The reverb driver tube is pushed very hard with high voltage in many amps so the tube tends to burn out sooner than all the other small tubes. School me on 12ax7 vs 12at7 for reverb driver telecaster. The reverb is something special and not in a ty but thats cool way, but in that you can use it on vocals and it sounds like reverb. Try running the effect completely wet with a long reverb time to. Known for its bright sound and smooth decay, plate reverb has been heard on countless records over the years and is one of the cornerstones of artificial reverb. Swap out both reverb tubes with known good tubes and test the amp. I replaced the cathode resistor for this tube the triodes are paralleled as a mod suggested elsewhere from 4.