I have a tube od pedal that uses an ef86 tube, but its too aggressive and gainy. This is our collection of diy and hifi audio schematics. A preamp tube famously used in 1950s preamp circuits by vox. This improved design offers the ability to select between a 12ax7 or ef86 preamp tube using the mini toggle on the faceplate or the included foot switch. Tube distortion pedal from fryette has an innovative, pentodedriven, variablebias tube design that can produce anything from a slightly edgy clean boost to fullblown flamingguitar euphoria. Morgan amps equips the dual 20 head with 12ax7 and ef86 tubes for an impressive range of tone. The bad cat usa player series cub 40r preserves the vintage purity of the original cub circuit while offering increased flexibility. There is simply no better audio forensics product on the market. Dc circuit, circuit design, circuit diagram, valve amplifier, audio amplifier. It is typically used as a preamp in audio equipment and instrument amplifiers.
A 12ax7 is 20mm thick, so 34 should fit nice and snug. Voltage boost by a factor of 100 is just beyond the reach of a 12ax7 triode, but well within the capabilities of an ef86 in pentode mode, as we will see. I have been using a set of jj e806 driver tubes which are reliable, stay quiet and sound more detailed, on the top then, the ef86 s. Typical secondharmonic distortion with 10v rms output is on the order of 0. I may try isolating the tube socket bit more and add a tube dampener to see if it cures it. Unlike the more popular 12ax7, which is a twintriode tube, the ef86 is a pentode tube. I liked them better than the old mullard i have, and definitely better than any new tube ive tried. The 6267 ef86 pentode was a vacuum tube well suited for use in lowlevel. Morgan amps dual 20 head 20watt 2channel tube head. Tubes free delivery possible on eligible purchases. You will notice that we do not use a ef86 in any of our tube microphones but rather prefer the 6072a. Ef86 a preamp tube famously used in 1950s preamp circuits by vox.
When this is done, the resulting triode is among the lowestdistortion electronic amplifying devices ever made. This tube is both large in size and stout in its power output, with many higher powered tube amps employing them. In the paragraphs that follow ill crunch some numbers for a specific design and point out some of the amps unique quirks along the way. Vintage amperex ef86 6267 preamp driver tubes, germany. Download audacity for windows, mac or linux audacity is free of charge. Nch software has received numerous awards in software excellence for our windowsmac video, audio, graphics, computer utility, dictation and business software. Developed by a group of volunteers as open source and offered free of charge.
Any workarounds is it the same as switching the preamp tube to an ef86. Jun 12, 2015 2006 badcat wildcat 40r tube upgrade and comparison. If you have a microphonic ef86 from the get go, dampening is not going to help. The ef86 is a high transconductance sharp cutoff pentode vacuum tube with noval b9a base for audiofrequency applications. The ef86 is the preamp tube, i picked up some older used but good valvo, amperex and other brand ef86s, ive been running the same ef86 in my amp now for over a year with no issues. Parts free delivery possible on eligible purchases. The electroharmonix ef86 is a later entry into the valve market and was designed as a low noise pentode.
They know that a certain type of 12ax7 tube may sound better in one amplifier. Pentodes sound more edgy and rough than a triode like the ecc83. The 15watt ac15 handwired head features two channels of unmistakable vox tone. The reason for this is that preamp tubes are effectively the voice of the amp, working as translators that convert an electric guitar signal into an audio tone. If you have built any of these circuits, we would love to hear from you so send us your comments. Let us help you capture your sound signature in its fullest detail. Also included are extra ef86 s some with have some noise but work fine. Switchable 12ax7 and ef86 preamp tubes cover a wide sonic range. As well as a lush midrange that will provide a unique colour and sound to your microphone locker. Single ended el84 hifi ef86 preamp dc circuit circuit diagram. A designs reddi 1channel tube direct box sweetwater.
I dont currently have an ef86 amp, but the last few ive had were a little pricey to retube. This is unusual used a as preamp valve and unusually is a small pentode. The ef86 is switchable bringing it in allows you to achieve more growl and higher gain tone. Electroharmonix ef86 mini pentode preamp tube long.
An ef86 tube is used for its ballsout character, exceptional gain, and low noise. Colin check out my ebay auction for 3 telefunken ef806s special low noise versions. The ef86 also has an internal shield structure that is physically tied to pins 2 and 7. The cm67 s comes outfitted with a phillips ef86 tube and a white porcelain ringed k67 capsule that upgrades on the original design for better longterm performance. That may be the nature of this particular tube because of its high gain. Introduces audacitys interface, then shows simple techniques to record and edit a clip. Includes setting preferences, noise removal, normalization, equalization, compression, trimming, and more. Very rare nos mullard ef86 uk 1956 ultimate ef86 pro audio. Mxl revelation tube condenser microphone chuck levins. It was as close to generic as i could go and get a decent cable, without agonizing over it. The 6267 ef86 pentode was a vacuum tube well suited for use in low level. The ef86 is a high gain pentode designed to amplify lowlevel audio signals. Does anyone know a low gain substitute i could try.
I see the matchless ef86 channel is missing from the fm3. Vintage amperex ef866267 preamp driver tube, incomparable dutch vintage design, craftsmanship, sound quality and musicality, made in germany. Although id change the word selection a touch and say it is going to be simple to implement find a fender with 2x6v6s, trem and verb, and then make component adjustments accordingly to match your changes ef86 input tube, el84 output tubes. But making it all actually sound good might not prove quite so easy. Those british 50s long mesh square getter are considered as the best ef86 ever made, with some mo. To my old ears the negative feedback can sound like there is some slight compression going on in the circuit and a bit more tube distortion. Tad tubes are carefully selected and undergo very strict quality control before being offered for sale. Apr 07, 2017 in guitar amps, ef86 tubes will become microphonic at some point. Ive been enjoying the matchless dc30 ef86 since cliff added it.
Get the guaranteed best price on preamp tubes like the wathen cryotone tubes ef86 wc preamp tube at musicians friend. This detailed introduction to the zen of audio restoration features a beginners guide to. Our intent is to provide a basic idea of what each tube sounds like, hopefully helping you narrow the search down a bit. These were known for their excellent sound, musicality and naturalness. Ef95el84 single end integrated amplifier page 3 diyaudio. One preamp tube that weve seen popping up a lot lately is the ef86. Id go for something just a hair smaller than the diameter of your tube. It is manufactured in russia and is a very durable valve. Buy electroharmonix ef86 preamp vacuum tube, single. I dont hear much change when i do that but maybe one of. The ability to reply to and create new discussions.
It is designed for voltage amplification, not power production, and thus has a relatively low plate dissipation limit. They are powerful enough to drive many power tubes. In guitar amps, ef86 tubes will become microphonic at some point. Improved vacuum tube models for spice simulations, part 1. Delivering the warmth and intimacy youd expect from a classic tube microphone. There you find ltspice schematic the audio files and the tube models. That effort took a designs audio back to a place in time when the ampeg b15 reigned supreme making liberal use of tubes and transformers. It is a hardedged sound with as many variations as there are players. A vva can be used to color the sound of a digital recording by adding tube warmth or fatbass in addition to adding subtle harmonics to enhance very old or. Many peoples were very satisfied with the phono preamplifier by eugen komissarov, published in the radiohobby magazine, 42002 1. They were used by many vintage tube amp manufacturers. Use free audacity software to record and edit sound on windows, mac and linux. Looking for a lowgain replacement for an ef86 discussion in amp input normal or bright started by suncrush, mar 6, 2016. This tube is a strange choice for a power amp, i will admit, but for a small practice amp it represents an irresistible alternative to an underdriven el84 or 6v6 design.
Now in short supply, the ef86 pentode tube is at the heart of this elusive tone. Morgan amps ac40 deluxe 40watt powerscaled head driftwood. This preset is fairly simple and has scenes going from slight breakup to moderate gain and then a lead boost. A dual goldsputtered, 6 micron diaphragm and handselected ef86 pentode tube provide warm, rich and transparent sound. More electron tubes can be found in the tube store collection of new old stock nos if you are looking for a tube shop carrying the very best tubes for your amplifier, youve come to the right place. We offer some of the most comprehensive testing facilities available today. This characteristic means that it has more gain than each half of a 12ax7, although a circuit that cascades both sides of a 12ax7 can generate more total gain. This means the pentode preamp needs a gain of 100 to achieve an input sensitivity of 10 millivolts, which is plenty of overdrive potential even for the most wimpy of pickups.
Ceramic gold plated vacuum valve tube pcb 9 pins socket for 12at7 12au7 ecc83 12ax7 el84 6922 5670 6dj8 ef86 for hifi hiend amplifier audio senior player headphone proamp fever acoustic diy lab 4pcs. Fm3 and matchless dc30 ef86 fractal audio systems forum. Its no secret here at humbucker music that were big fans of tube amps. In general, the ef86 has a smoother, less glassy tone than a 12ax7. Enjoy the lowest prices and best selection of preamp tubes at guitar center. Single ended el84 hifi ef86 preamp valve amplifier. I have been using the ef86 in my amps for 20 years and just love the rich, detailed sound they.
While the soyuz su017 may have a different look than other modern takes on the u67, the microphone still offers a close approximation of that classic sound at a much less expensive. As one of the largest dealers of highend amplifiers in the world, we know and understand tubes and the amps they go in. Looking for a lowgain replacement for an ef86 fender. Download audacity download the free audacity audio editor for windows, mac or linux from our download partner, fosshub. Morgan amps equips the ac40 deluxe with 12ax7 and ef86 tubes for an impressive range. After i have heard its sound, there were no questions about building that device for me.
The ef86 is a small pentode commonly used in preamp stages. Two tube modes for two distinct voicings morgan amps equips the dual 20 head with 12ax7 and ef86 tubes for an impressive range of tone. There is a lot of precision hardware that is carefully aligned to prevent physical damage or electrical failure. Vintage amperex ef86 6267 preamp driver tubes, germany, test. More tube porn ef86 from gec steve hoffman music forums. It was a sort of grindy sound perhaps an intermodulation distortion component. If they dont past this rigorous testing, they are not chosen to be tad tubes. Watford valves, one of europes leading suppliers of tested, graded and guaranteed valves to the professional music industry. Reaper supports a vast range of hardware, digital formats and plugins, and can be comprehensively extended, scripted and modified. Ef95, ef86, 6j7 are highmu penotde tubes sound different with triode tubes. A virtual valve amplifier vva is software algorithm designed and sold by diamond cut productions, inc.
Ceramic gold plated vacuum valve tube pcb 9 pins socket for 12at7 12au7 ecc83 12ax7 el84 6922 5670 6dj8 ef86 for hifi hiend amplifier audio senior player headphone pro. Assorted brand mullard ef86 6267 tubes canuck audio mart. The a designs reddi tube direct box is a unique unit. It came with a new electro harmonix ef86 that sounded good, but the old tube really sound better. While rectifier and power tubes are often left out of hybrid models, any amp thats not entirely solidstate ought to have a preamp tube.
Layouts are per preset and use the perform 1 and 2 for fc users. I used them with a pair of soundelux u95s tube mics when i had them. Bad cat wildcat 40r tube comparison, mullard ef86, amperex. Do power tubes have a particular sound page 3 the tone. That is a lot of scratch just to see if the ef86 is everything you dreamed of. Departments guitars parts audio tubes tubes preamp electroharmonix ef86 mini pentode preamp tube. Digital distortion has a more metallic, raspy sound which works well for heavy metal, grunge, or reliving your 80s hair band days. Sporting a dual goldsputtered, 6micron diaphragm and handselected ef86 pentode tube that gives your revelation ii an iconic sound. With a desire to see how an ef86 would sound in a particular amp, this small add on ef86 box pictured above in the recess of a combo amplifier let me try out an ef86 and ab test it against the twin triode 12ax7 preamp circuit already in the amplifier. You also have switchable control for brightness and bass cut. It has a polar pattern selection that is almost limitless allowing it to handle any recording track. Ive got several different brands, none of them are microphonic in this amp, and there is something special about the sound of a ef86 preamp tube. The valve complement is made up of 1 x ef86, 3 x ecc8312ax7, 2 x el84, and 1 x ez81 rectifier.
Ax84 hioctane diy guitar amp simulation tube model in. Dc 7 audio restoration, noise reduction, audio editing, audio. Scroll down to the chart and forward to the page with the desired nominal id which is the internal diameter of the ring. Vintage amperex ef86 6267 preamp driver tube, incomparable dutch vintage design, craftsmanship, sound quality and musicality, made in germany. Wathen cryotone tubes ef86wc preamp tube musicians friend. This pentode is selected for lownoise and low microphonics and is used in many highend. Bad cat cub 40r usa player series 40w 1x12 tube guitar. Rebates layaway pro coverage affiliate program press room. Now, if you compared the ef86 wired as a triode to 12 of the 6072a which is a dual triode the specifications are nearly identical with the ef86. Unlike the majority of pentodes of this type, the ef86 possesses low distortion, low hum induction and low ionization noise.
Here for sale an absolutly perfect very rare nos mullard ef86 made in blackburn factory in great britain in december of 1956. Jun 30, 2017 this is a dual 6 micron, goldsputtered diaphragm that has a hand chosen ef86 pentode tube that gives you rich and warm sound. Audacity is an easytouse, multitrack audio editor and recorder for windows, mac os x, gnulinux and other operating systems. Get your tad tube amp doctor ef86 6267 tubes at humbucker music. Placing the microphone roughly 2 4 inches from the twelfth fret and aimed directly at the strings will generally produce a warm, full bodied sound with good tonal balance. The 6l6 is a very common power tube that can be found in many iconic amps, both in the british and american camps, although most players would consider it more on the american style of things in terms of sound. Nos telefunken ef86 or nos philips e80f for tube mic. The algorithms behind a vva are based on real vacuum tube circuits and. Feel free to send us your hifi audio schematics and we will add them here.
It can therefore be driven to maximum power at far lower volume levels. Reaper is a complete digital audio production application for computers, offering a full multitrack audio and midi recording, editing, processing, mixing and mastering toolset. By unique we mean the effort placed into the reddi to produce a sound and character all its own. Power level control helps your pedals sound their best at any volume level. Wathen cryotone tubes ef86wc preamp tube guitar center. Discussion in audio hardware started by bill hart, jul 22, 2017.
Its components are individually selected and chosen for their superb sonic capabilities. Analog tube distortion gives a good, allaround rock tone, such as the sound of a marshall stack cranked to 10. The ef86 is a single, very large preamp tube by comparison. It can be found within their dc8 and forensics8 software programs. Upgraded to nos mullard ef86, anos amperex el34s, and vintage rca ar4. Jul 26, 2011 ax84 hioctane diy guitar amp simulation tube model in ltspice with audio.
Shop for the 6al5 tube and receive free shipping on your order and the guaranteed lowest price. Your effects pedals will sound great, thanks to adjustable power. Z explains the differences in approach and design for each preamp tube. Ive head that the main problems with the ef86 as far as going microphonic is. I got some older stock ef86 tubes off ebay, and what a difference. Shop for the wathen cryotone tubes ef86wc preamp tube and receive free shipping on your order and the guaranteed lowest price.
Get a low price and free shipping on thousands of items. Free matchless dc30 ef86 preset fractal audio systems. If you arent sure about which valve you need, or what tubes you can substitute, let us help you. The matsushitas had very low hours but one has some noise. They are cool tubes, and they have a different personality than the more common 12ax7 preamp stage. This characteristic means that it has more gain than each half of a 12ax7, although a circuit that cascades both. When you buy products through links across our site, we may earn an affiliate commission.1062 140 80 630 995 268 560 215 399 570 465 672 1403 337 977 265 990 256 1063 965 612 665 1457 701 1285 915 1337 1366 25 1397 988 422 1397 916 536 631 1267 605 1117 386 1365 1421 190 418 928 1467 670 725