Kt120 datasheetpdf list of unclassifed manufacturers. I have seen cases where amplifiers by design had well over 400 volts on 5881 tubes back then. Discussion in amps and cabs started by kwicked, jun 22, 2015. What are your favorite new production kt88 and 6550 power.
Tungsol created the 6550 vacuum tube, a specialized hifi audio tube in 1954 6550. The kt120 tungsol power pentode has to be one of, if not the most powerful tube in production today. Tung sol havent updated their site so i dont know if theyre a dropin replacement for the kt120 by size or not. Opinions on tung sol 6550 reissues steve hoffman music. With a plate dissipation of 60 watts, the tungsol kt120 is the most powerful tube in the 6550kt88kt90 family. The dynamics are unlike anything we have ever heard before. Large bottle type for the look and sound of 6l6 tubes used during the golden age of hifi in the 1940s and early 1950s. All of the reissue tungsol tubes that i have used tested very well and have a stronger output than the run of the mill russian stuff. For a collection of datasheets, follow the link to at the top.
When its run in circuits designed for 6550kt88kt90 tubes, the tungsol kt120 resists being overdriven and reliably delivers peak power. The 6550 is a beam tetrode vacuum tube introduced by tungsol in 1954 for application as an audio frequency. However, taking advantage of the higher current handling capacity of these tubes, a very unique and super powerful and stable amp can be designed using the tung sol kt120. Recent listings manufacturer directory get instant insight into any electronic component. Tetrode, impervious to overload when used at parameters found in existing 6550kt88kt90 circuits. As a poster above said, the new sensor gec ri kt88 is a nice tube.
Block diagram, pinout and 6v6 circuit application inside. I have come to the conclusion that advice is good but, advice is sometimes biased towars that person liking. Using the tung sol kt120 as a direct replacement for any 6550 of kt88 will provide much longer tube life and reliability. A current recreation of the classic original 6550, now made in russia. The last valves mov produced after a run of 28 years 1956 1984 were branded gold lion and here this russian tube made by genalec carries the same branding, but this valve has been made for the modern audio market. However running a pair of kt120 in class a would maybe be a very good idea. The nuvistor was developed by rca and it was first introduced in 1959.
Essentially new not fully broken in they have less than 100 hours on them. Tungsol developed the first successful car headlight in 1907, followed in 19 by a single bulb two filament high and low beam headlight. Tungsol, 6550, old vs new im could not find a thread with a ab comparison, so i of these two 6550s so did it myself. The kt88 is one of the few classic audio output valves.
I was thinking of the tung sol 7581 which is being phased outi bought a set a few months ago and the spec sheet said 30w plate dissipation. Kt88, kt90 or similar, try out these new kt120s you will not be disappointed. But the choice is whether or not to trust that the new senser tungsol 5881s can do the same. A pair of these tubes in pushpull configuration can deliver power levels of 150 watts or more. This tube was used in the dynaco mark iii and sunn amplifers. With a plate dissipation rating of 60w compare that with the 35w of the 6550, the 42w of the kt88, and the 50w of the kt90, a pair of these kt120 tubes in pushpull configuration can deliver 150 watts or more of audio power. Other tungsol inventions included the flashing turn signal. Due to its rugged construction and conservative ratings, it is the most reliable current production el84 type available for use in vox ac. When used at the parameters found in existing 6550kt88kt90 circuits, the tungsol kt120 is impervious to overload, delivering peak power. The tung sol 6v6 is built to handle higher voltages, resulting in better mids and bottoms, while keeping its smooth. The kt88 has better imaging and tighter bass than the. The tung sol kt150 glass envelope is a special egg shaped balloon that was developed to improve thermal dissipation and maintain a superior vacuum for the best sound. The tone signature of the tungsol kt150 is characterized by a strong bass signature with balance and clarity throughout the audio frequency spectrum.
A pair of these tubes in pushpull configuration can deliver power levels of 150 or more watts. Due to many requests by fans of our tungsol line of tubes, the tungsol el846bq5 has been reissued. Tungsol platinum factory matched quad 6l6g 6l6 6l6gc big. Tungsol kt150 matched octet power tubes tubes audiogon. The fact that the glass envelope has no flat sides means the tung sol kt150 has no problems with microphonics. The size of the tungsol kt120 tube is substantially more than its kt88 cousin. Kt120 datasheet, cross reference, circuit and application notes in pdf format. The tungsol el846bq5 was a popular oem tube for americanmade el846bq5 guitar amplifiers, such as those built by gibson and harmony. Etc2, alldatasheet, datasheet, datasheet search site for electronic components and. With the new kt150, tungsol continues to lead in the audio power tube, power game. The tungsol 6v6gt is the new reissue of that famous nos tube from the 50s with all the creamy vintage tone you can eat.
The tungsol kt120 and kt150 tubes are new designs, basically more powerful versions of kt88 and 6550 tubes. When used at the parameters found in existing 6550kt88kt90 circuits, the tungsol kt120 is impervious to overload, delivering peak power with extreme reliability and long tube life. If that is the spec they go by then those are the correct numbers. I was thinking of getting gold lion kt 88 since such praise from them. It was the better 6l6, with higher output at the same input signal. 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. It has a sweet mid range that makes up for a tube that is generally intended for hifi. Really enjoying my gold lion kt88s, great match for my amp which is specd for either kt88 or 6550. Tungsol, 6550, old vs new audiogon discussion forum. Todays new production tungsol tubes are constructed with the same commitment to quality and reliability. If you want the best, than right now it is the shuguang treasures. Ultrastable tungsol kt120 matchedpair tubes are the most powerful in the 6550kt88kt90 family. Tungsol kt120 matchingpair vacuum tubes claim a storied history that stretches back to september of 1950 when the company introduced the 5881, an industrial version of the 6l6ga with a 23.
The tungsol kt120 when used at the parameters found in existing 6550 kt88 kt90 circuits, the tung sol kt120 is impervious to overload, delivering peak power with extreme reliability and long life. The bass is tight, full, and precise with a neutral midrange and transparent high end clarity. Buy tungsol kt120 vacuum tubes online, in stock and ready to ship. The original 6r3s are extremely unreliable so a change for something else like gu50 or kt88 would be advisable. We design and manufacture our tubes, engineered for demanding high fidelity, reliability and overall warmth. In 1955 tungsol raised the bar of high fidelity with the introduction of the 35 watt 6550, which could deliver 100 watts with a pair in pushpull configuration.
Be sure to insist on genuine tungsol vacuum tubes the next time you retube youll be getting the absolute best possible tubes for any demanding. The bass just goes so low, though i need a second set of tubes for once these end there life. Hi all has anyone heard amps with the new kt150 power tubes. This is a gorgeous tube, fitting for amplifiers new or old. The monster power transformer in the tu8340vk is rated to supply the juice these tubes require. This is truly the tyrannosaurus rex of beam tetrodes. Super dependable, works well in most all applications. Tadtubes, verstarkerrohren, kt88, el34, ecc83, 12ax7, amp. It has a plate dissipation of 60 watts, making it the most powerful tube in the 6550, kt88, kt90 family. Kt120 vacuum tube from tungsol greetings to all from melbourne. It embodies a complete mechanical redesign which results in greater resistance to shock and vibration.
Kt88 datasheet, kt88 pdf, kt88 data sheet, kt88 manual, kt88 pdf, kt88, datenblatt, electronics kt88, alldatasheet, free, datasheet, datasheets, data sheet, datas. How do the gold lions compare to the tungsol kt120s. Tungsol kt150 the overall sound of the kt150 is thunderously powerful. What are your favorite new production kt88 and 6550 power tubes. Personally, i find the new sensor tungsol ri the best 6550 for guitar. Its a more wide open tube than the tungsol ri 6550. Check with your amps manufacturer to confirm the kt150 tube will work in your amp. Most of the datasheets are in pdf format and some are links to other html pages. Terminal connections, kt120 datasheet, kt120 circuit, kt120 data sheet. The 5881 is the electrical equivalent to types 6l6 and 6l6g except that the plate and screen dissipation ratings have been increased approximately 20 percent. New sensor now announces the tungsol kt120, which has a plate dissipation of 60 watts, making it the most powerful tube in the 6550kt88kt90 family. Discussion in audio hardware started by billy budapest, jun 21, 2005. Tungsol kt120 power tube kt120 tungsol electroharmonix.
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