For sale is reprint knight tube test data for 600 series testers. Tube 6l6g or rohre 6l6g id2982, beam power tube, octal int. This list is biased by the tubes that i have encountered during the repair of the many tube amps that have come to my repair shop. A feature of a beam power tube is its low screengrid current. I recently bought a seco 107a from barry777 here good man, and everything was as he described it but when i test a nos 6sn7 and it tells me it failed the gm test i get worried. The tad 6l6gcstr is your perfect choice if you are up for the sound of the rock legends. When you replace your 6l6, you should make sure that you replace with the right type.
I was actually needing a sub for a 41m, not produced since about 1940. The part thats cooking my noodle is the data sheets for the 6l6gc and 6l6gb seem to have the same data. I have 9 fender pro tube amps and have played full time for over 27 years. Jim jones bias tables click here to vist the house of jim website. The 1959 miniwatt technical data book from philips lists the 6bq5 as the r. Reference data for radio engineers, federal telephone and radio, 1946, 335 pages this great book is, well, a reference book for engineers. If this describes the rig you use, then this is one of two modern tubes you should consider. As of 3505, i have finished scanning the general section, receiving tubes part 1, receiving tubes part 2, miscellaneous, specialpurpose receivingtype tubes, thyratron, ignitron, and glowdischarge tubes, and most of the transmitting tubes, as well as all. Accurate calibration of the hickok 539b and hickok 539c. Substitutes are given as a guide only please refer to original manufacturers data sheets to ensure that a substitute is safe and appropriate for your application. Tube datasheets here youll find a modest collection of datasheets for some popular tubes. Tung sol brown base is the same as 6l6gb not to be confused with the modern sovtek 5881. I will read up more about ab then ask my questions.
Myles, i was reading some info about gts on your website earlier, but now im confused. Seems that tuvbes listed for rf amp service would have heater to cathode ratings included. Groove tubes gold series gt6l6r matched power tubes medium. Receiving tubes and foreign equivalents data collected from the russian book. The 866a is way oversized for most audio projects so the 816 is a good alternative if you must have that magic blue mercury glow. Tad has the remakes of the all time favorite 6l6 classics by rca and ge. Try searching the tube data sheet locator, the worlds biggest index of tube datasheets.
The most accurate method to test tubes, the curve plots can actually be compared to the printed examples for each tube type that appear in the manufacturer technical data sheets and books. Most of the datasheets are in pdf format and some are links to other html pages. Get a low price and free shipping on thousands of items. Heres instructions for convertingamplifiers using 7591,to 6l65881. Mutual conductance 1700 and 1900 micromhos gm manufactured in america, matched values, matched codes, black rib plates, wide d getter, copper siderods triplett 3444 bogey value for 6l6. Vacuum tube 6l6gc, tube amp doctor image 1 vacuum tube 6l6gc, tube amp doctor image 2. Nearly 80 years later it remains the most used power output tube. Beam power tube 6l6g, 6l6ga, 6l6gb, the anticathode limit dissipation power of which is 19w, can be used in the amplifying of a1ab1 and ab2. Jan 15, 2019 actually, this may reflect propagation of a mistake in alan douglas classic book on tube testers and test gear. Extremely low noise and a lack of microphonics combine with excellent ratings for detail and harmonic content to provide a tube of exceptional quality. I recommend 6l6g, if you can get them in good condition. Vacuum tube 6l6gc, tube amp doctor antique electronic. Fender ampeg b15 b15 fender showman 1972 leben eico hf20 tall bottle 3. Approximate plate current in each tube in milliamps will calculate and display plate power dissipation and approximate plate current per tube.
This groove tubes exclusive blackplate carbonized nickel design features extended heat sink wings. Get the guaranteed best price on power tubes like the groove tubes gold series gt6l6r matched power tubes at musicians friend. Ultralinear distributed load highfidelity vacuum tube audio amplifiers ultralinear operation, also known as distributed load operation, is a term when applied to singleended or pushpull vacuum tube audio amplifiers, that describes the particular output stage configuration whereby the screen grids grid 2 of tetrodes, pentodes or beam power tubes are fed. The beam tetrode design of the 6l6 allowed rca to circumvent philips pentode patent. Type kt667581 tubes the 7581a tube is an industrial strength version of the 6l6gc which is also said to be the american equivalent to the british kt66.
Without my rca tube reference book in front of me ill have to say from memory that the 6l6gb at least the old ones had a lower pv rating that the 6l6gc. It had a metal envelope which was popular at that time for use in radio sets since it was less likely to break than a glass envelope. Tube 6l6 or rohre 6l6 id2218, beam power tube, octal int. Prior to installing these i had a quad set of grade 4 groove tube 6l6 tubes in my amp with 4 tungsol 12ax7 preamp tubes. Developed by philips in 1953 for use in the british mullard 510 amplifier, t he el84 pentode tube, or commonly known as 6bq5 in north america, was intended for use as an inexpensive alternative to the larger audio tubes of the time, such as el34, 6l6, and kt66 power tubes. When installed into your amplifier, these octal power tubes offer a focused bite with welldefined articulation. Choosing the right value is a bit of an art and depends in part on being able to clearly establish the power that an exemplary, new tube would produce with that load. This is complicated by the fact that the 5y3 specs are generally given at higher currents and voltages than are normally found in the hickok 539bc or at least the currents and. There is a key between pins 1 and 8 to ensure that the tube can only be plugged in one way.
Some players prefer the extra clarity and punch of the 6l6. I try to concentrate on popular andor readily available tube types. Choosing the right value is a bit of an art and depends in part on being able to clearly establish the power that an exemplary, new tube. A faithful reproduction of the original general electric clear top tube made on the original ge machines and with many original materials. Both my tube manuals rca and sylvania list the 6l6 metal, 6l6g coke bottle, and 6l6gc at 360v max in class ab vs. They can also be used in regulatingvoltage circuit. Unlike the el34 power tube, 6l6 tubes generally sound a little cleaner and tend to have a bit more beef in the low end as well as more bite on the top. Today, the 6l6gc is one of the most common power tubes used for electric guitar amplification and there is an almost overwhelming supply of current production options to choose from. Tube 6bg6g or rohre 6bg6g id4644, beam power tube, octal int. Using the ts info, the 6l6gb is different to the 6l6wgb is different to the 5881, but then the rating system used design max, abs max, design center differs for each. Thus the effective resistance of the tube varies not only from tube to tube and as the tube ages, but even in the same tube depending on the total plate current.
The ratings 7581 are roughly the same as the 6l6gc while the 7581a has higher ratings. While all 6l6 types are pin compatible with one another, some amps are designed only for the higher powered 6l6gc. Each tube in this comparison was installed in the same custombuilt, fixedbias singleended guitar amplifier in. At the bottom of this page youll find some links to other tube datasheet sites in case you cant find what youre looking for here. This runs the tube at full rated plate and screen voltage, and plots the curves at 10 different grid bias levels. Tubes free delivery possible on eligible purchases. A couple of months ago, i needed a 6k6 beam power tube. The 816 is a smaller version of the 866a with less voltage and current handling capability. The beam power part tells us that the tube, as rca put it, is a tetrode or pentode in which directed electron beams are used to increase substantially the powerhandling capability of the tube. It contains tons of useful data on vacuumtube circuits, components, power supplies, acoustics, waveforms, radio propagation, and lots of other things. You can use 6l6gc where any of the other tubes are used, so if you arent sure, go with 6l6gc types and you will be fine. The 1943, 1949 and 1959 sylvania tube manuals online. Fender has been using them since the 1940s and since then there have been many others who have designed hugely popular tube amplifiers that rely on the 6l6 tube types for their tone. Accurate calibration of the hickok 539b and hickok 539c tube.
Have none but have a half dozen 6v6 similar beam power tubes, compared the data and asked here, norm said thats a good sub and draws less current. There is a wide range of 6l6 based tubes, not all are equal. Tubes can be selected by theroll chart of included in the tube data manual. Highperformance design delivers 30 watts standard 6l6 tubes range from 2025 watts. This is a prime example that attempting to compare specs of vintage tube types can be rather convoluted. Vacuum tube 6l6gc, tube amp doctor antique electronic supply.
Vacuum tube, vintage radio and other electronics information. I am working on scanning and placing on this page the entire rca hb3 tube manual. I tested them with my hickok 539b tube tester and they are still very good tubes. Herein you will find a collection of vintage engineering texts, vacuum tube datasheets, and other obsolete information, presented free of charge and without annoying advertisements. It has strong and focused output, and is highly recommended for. It was interesting to compare the data sheets, 6l6, 1614, 6l6gb, 6l6gc, 807, and 6146. When choosing between 6l6s and el34s i tend to go for the 6l6s sound that has a more american sounding bottom end, not quite as woody as the english overdriven tube sound. Covers tube theory, tuned and untuned amplifiers, oscillators, and power supplies. Mullard data book 1970 valves vacuum tubes vintage book pub. Mar 25, 2015 since this was the first time i used these, it is a good opportunity to write a post about the tube. Buy electroharmonix 6l6gc vacuum tube, matched pair. I contacted him about this and he conceded that that it was a mistake in his book, but things like that, once they get to the internet, seem to have a life of their own and can become propagated far and wide. Octal power tube max plate watts 30w tad 6l6gcstr rcastyle blackplate. But if your amp has the timecorrect plate voltages for 6l6gb, you may also use 5932 6l6wga, 6l6ga, 6l6gay, and 6l6g.