Tung sol 6550 history books

With the new kt150, tungsol continues to lead in the audio power tube, power game. Have switched to other amplifiers during this period, always nice coming back to them. Based on the 6l6 vacuum tube, the 6550 was designed. Copy of the original type 3 tungsol 6550 made in the 1960 s.

Super dependable, works well in most all applications. While i understand the original tung sol 6550 cost a lot on the used market than the reissue, there is still the 6v6, or 12ax7 that are reasonably priced. These three men were head of the entertainment tube division of general electric. Unfollow tung sol 6550 to stop getting updates on your ebay feed. For 16 years, his skill and understanding have helped propel tung sol tubes to the top of the industry. Starting around 1904 they began producing electric lamps for the newfangled contraption called the horseless carriage and went on to manufacture vacuum tubes in the 1930s through the 1970s. Mfy tungsol 6550 tube old versions audiogon discussion forum. Have been using genelex gold lion kt88 reissued tubes for about 6 months and like them, a lot. These tubes have a four digit number as the designation. He is also the designer of the otto1 multi tube tester and matching system.

Cathode spray booth with live feedback lampandswitch system to control cathode spraying. Tung sol was an old hand at electron tubes and such. It is more dynamic and 3dimensional than any other 6550 click to read more about this product. Triple getter, carbonized screen, and gold plated grid. This is truly the tyrannosaurus rex of beam tetrodes. His knowledge and understanding of vacuum tube operation is well respected throughout the music industry. The current production benchmark of the classic 6550. With a massive plate dissipation of 70 watts, the tungsol kt150 is the most powerful octal beam tetrode ever produced. The tung sol 6550 offers excellent tone and classic sound, and you can find a variety of vintage tung sol tubes on ebay. Tungsol created the 6550 vacuum tube, a specialized hifi audio tube in 1954. Tubes these tubes are tested in my sencore mighty mite tc 162 tube tester. In my arc ref 3 i m using a tungsol 6550 tube with the following code written on the metal base 322nu 3, it is a smooth grey plate, without holes in the plate. Original issue tung sol 6550 solid plates set of 8 tubes the king of 6550 tubes. Tungsol was a privately held company and was run like a laboratory this gave ts tubes some.

The bass is tight, full, and precise with a neutral midrange and transparent high end clarity. A beautiful mid 1950 s tung sol tung sol 6550 power tube with it s original box torn bottom from the many years age and storage documentation shown in photos is included study all of the photos below and view test reports this is amongst the first generation which features a 40mm black plate and 3 larger. I have had them on my cary slm100 amps which are also for sale here on ebay runnin. Did use ge 6550 s and tried some russian tubes before, like these better, but has a lot to do with the type of sound you are after. Tungsol electric inc newark manufacturer in usa, tube. We burn them in for 72 hours, check for excessive current draw, all that good stuff, then match each tube in circuit at real voltages. I have come to the conclusion that advice is good but, advice is sometimes biased towars that person liking. Vintage from 1956 tungsol 6550 solid black plate strong like. Great savings free delivery collection on many items. Power transistors if tungsol electric were still in business today they would be over 100 years old. This new production tungsol tube is manufactured at their xpopul factory also known as reflektor in saratov, russia. Popular in such amplifiers as the ampeg svt as well as many other applications. Feb 28, 20 the tung sol kt120 has a plate dissipation of 60 watts, making it the most powerful tube in the 6550 kt88kt90 family. New sensor corp has recently reissued the tung sol 6550 tube.

Large bottle type for the look and sound of 6l6 tubes used during the golden age of hifi in the 1940s and early 1950s. Mar 20, 2007 tung sol and most other us and foreign 6550 plate dissipation 35w max any manufacturers kt88 plate dissipation 42w max i am gonna guess that the citation was designed to run kt88s over 6550s what is near max ratings for a kt88 is over limit for a 6550. The tung sol name and trademark have been acquired by the new sensor corporation. Tung sol created the 6550 vacuum tube, a specialized hifi audio tube in 1954. For use in outputs up to 100 watts in pairs, the tungsol 6550 tubes offer low distortion output, simplified electrical balance, extremely uniform characteristics, reduced maintenance, lower operating costs, and long life. Vacuum tube 6550a, valve art antique electronic supply. I know 322 is the factorycode of tungsol and normally the 322 is followed by eq 63year 45week 3 shift but i have seen also 322hn3 and rm3.

The 6550 became quite popular in american audio amps in 1950s. Okay, no, it is not a real general electric 6550a, but it is at least keeping up with the real deal for a while. Panel indicator lamps in front of the operator at the cathode spraying position are actuated by quality control inspectors who measure the highly critical diameter and coating weight of finished cathode sleeves in the bloomfield, nj plant of tung sol electric inc. Svetlana makes a great 6l6, and jj electronics and mullard have excellent el84s and el34s, respectively. Supposedly, they are an exact copy of the 1968 black plate. The original 6550 was a pear shaped high power tetrode designed for audio use by american tung sol company. Ge stapled plates 1970s 1980s 6550 sylvania 1970s 1982 6550 tungsol. Tungsol developed the first successful car headlight in 1907, followed in 19 by a single bulb two filament high and low beam headlight.

In later years, 6550 tubes were also used in guitar amplifiers, notably in us versions of marshalls and various versions. Tungsol, 6550, old vs new audiogon discussion forum. Known for their reliability, the tung sol 6550 vacuum tubes originated circa the 1950s. Shu guang vs telefunken vs vintage jan tung sol vacuum tubes in dynaco mark iii. Each tube is burned in, tested and then closely matched for gm transconductance and ip plate current by the distributormanufacturer. A current recreation of the classic original 6550, now made in russia. Since then, we have gotten back in touch harry storm, and chris mccoulle, in addition, bud ringmann the creator of the 6550a. Finest tubes under the tung sol brand, including military versions. A reissue of the classic 6550 tungsol type 3 triple getter version. Note ed had previously worked on the development of the famous 6550 tung sol coke bottle. Uprated to 6l6gc specs for improved performance and reliability.

Gershwin song book, and the early decca recital of the tenor carlo bergonzi. The tungsol 12ax7 vacuum tube sounds great in just about any guitar amplifier. Tungsol, 6550, old vs new im could not find a thread with a ab comparison, so i of these two 6550 s so did it myself. Tungsols greatest contribution to the world of audio was the 6550, conceived and developed for hifi and introduced in 1955 this tube is still powering many of the worlds greatest sound systems 45 years later. Anthology books, volumes 1thru 3, contain 21 amplifier. A pair of kt150s can allow an amplifier with a power output approaching 300 watts to be built. Copy of the original type 3 tung sol 6550 made in the 1960s. Many tubes that are intended for special applications, industrial, or military use do not use the retma standard. Figuring out which power tubes will hit that sweet spot is a matter of trial and error, but there are a few especially popular tubes that make a good starting point. Later, ge and philips produced straight bottle 6550s. Get the guaranteed best price on power tubes like the tungsol 6550 tube at musicians friend. New sensor is an american corporation and since taking ownership of this factory has been steadily improving the quality of current production. Tungsol 6sn7gtb tubes by steven d questions about tubes and gear that glows. As well, the tungsol 5881 power output tube is a wonderful reproduction of the usa made 5881 from years ago.

We design and manufacture our tubes, engineered for demanding high fidelity, reliability and overall warmth. Copy of the original type 3 tungsol 6550 made in the 1960s. Other tungsol inventions included the flashing turn signal. Tungsol kt150 the overall sound of the kt150 is thunderously powerful. However, if you look up at the top of the tube, by the top getters, the reissued tubes do not look the samethey are missing the clear triangle looking things. Tungsol was an american manufacturer of electronics, mainly lamps and vacuum tubes. These russianmade 6550 power tubes are brought to you by new sensor, the company responsible for sovtek. A pair of these tubes in pushpull configuration can deliver power levels of. In case you get another customer with one i thought i would pass on the results of my bias tweaking with the smooth plate tung sol 6550 s. Tungsol 6550 1963 triple getterno holes with ge mark.

The 6550 is a beam tetrode vacuum tube introduced by tung sol in 1954 for application as an audio frequency power amplifier. Tungsol 6550 tube mediumgreen duet musicians friend. Starting in 1907 they developed the first successful electric headlamp for cars, they followed that in 19 with the two filament high and low beam headlight in a single bulb. Enjoy the lowest prices and best selection of tung sol power tubes at guitar center. If you dont know what to choose, pick the tung sol 12ax7. Genelex gold lion kt88 reissued tubes audiogon discussion. Tungsol 6550 power amplifier tube classic tone is back. The dynamics are unlike anything we have ever heard before.