From speakers to batteries to transformers and many other components. Please see the substitutes at the top of the page for more details. Svetlana technical data kt88 high performance audio beam. Jasmine concerto kt88pp owners manual pdf download. The great thing about 8417 is that you can build a driver with one bottle. How to replace many octal tube types with the new then miniature ones. This mode of operation is forced by the use of a constant current source in the output stage. Please email to us if you want to have a quotation of the available parts. In general, the kt88 tube has a magical midrange similar to the smaller el34 tube, but with low and high end extremes that reach much further.
Can be used in place of 6550 for a more round bass signature. Across brands, i find the kt88 to also be a very linear tube, with. This is a list of vacuum tubes or thermionic valves, and lowpressure gasfilled tubes. Use of these parameters shall be entirely at the users own risk. The jj kt88 s also sound excellent in the hot rod 50, soldano amps. Both automatic or manual bias adjustment scenarios. These are even fatter and make more power than the jj 6550s. Oddblocks classa pushpull kt88 tube amplifier 12sl7 driver. Tube kt 88 or rohre kt88 id19153, beam power tube, octal int. Great 1953 sylvania below substitution tube manual for late 1930s to early 1950s. Measurements pushpull kt88 tube amplifier 12sl7 driver measurements were made using a hp 331a distortion analyzer, tenma low distortion signal generator 0. If you want to add some real thunder to your old ampeg svt then the jj kt88 s are the tube. Another great substitution is replacing the 6550s in 800 marshalls with the jj kt88s. Welcome to the tube data sheet locator, a popular web resource for finding data on vacuum tubes.
Tubedepot carries a selection of 6550 kt88 kt90 power vacuum tubes. The new kt88 features greatly enhanced sonic performance. Kt88 el34 compatible tube audio amplifier fluxion fmk6, pp, ul mode duration. Oddblocks classa pushpull kt88 tube amplifier 12sl7. Nov 02, 2011 6550 kt88 shu guang vs telefunken vs vintage jan tung sol vacuum tubes in dynaco mark iii duration. With a plate voltage of 500 v, the plate dissipation is about 25 w for each tube the kt88 is rated for 35 w. The stealth max is designed to run the kt88 output tubes at a cathode combined plate and screen grid current of 60 ma per tube. The kt88 is a beam tetrode k inkless t etrode hence kt vacuum tube for audio amplification. The kt88 is also suitable for use as a series tube in a stabilised power supply. Classa ultralinear 12sl7 srpp kt88 sipp tube amplifier. The svetlana kt88 is manufactured in the svetlana factory in st. The correct bias condition is preset for the tubes supplied but will require adjustment if the tubes are. The kt88 audio tube is considered to be one of the best sounding power tubes for hifi tube audio amplifiers.
We make tube amplifiers, passive preamp and speakers, and supply parts for diy hifi project. Due to the high current and power capability of these tubes, it is very important that the kt88 tubes are well matched. Tubes are components which are subject to a certain amount of wear and tear. At these voltages, 8417 needs 15v bias and drive, 6550 needs 32v bias and drive. The kt88 is broader with less of a mid peak, the 6550 would be percieved as scooped. Vacuum tube kt88, electroharmonix antique electronic. Octal u f 6,3 v i f c a1,6 a typical characteristic. Today, there are a number of quality kt88 tubes available for audio and guitar applications. This ne w t ube s ub stitut io n guidebook tube substitution. The jj kt88s also sound excellent in the hot rod 50, soldano amps. The information in this manual is subject to change without notice.
Petersburg, russia, and is designed to be a direct replacement for any kt88, kt90, kt99 or 6550. The kt88shuguang has an absolute maximum anode dissipation rating of 50w and is designed for use in the output stage of an a. We have even run a quad of the kt88s in a few evil twins and it is fat. The figures given are for single ended use, but the valve is almost invariably used in push pull pairs. I have heard 3 amps that use the kt88 or 6550 mcintosh mc60s, dynaco mark iiis, and my citation ii. Im sure there is something to be gained by tube rolling, but it. Marshall tube amps are the most wellknown el34 tube guitar amplifiers but there are many others who arrived on the scene in later years. View online or download ensoniq kt 88 musicians manual, quick start manual. You just updated your jasmine piano kt88pp tube amplifier. Kt88 distortion and frequency at 35w with 16db of feedback vin1.
The el34 being a true pentode sounds a bit rough and fluffy, even clean. Super radiotron valve manual, amalgamated wireless valve co. In the tube audio world, it was companies like dynaco, leak, and mullard among others who help boost the el34 tubes popularity. Switching these will only change the sound, not the electronics. To ensure this performance these instructions should be followed closely.
Modelled by carefully measuring an original gec tube where all the. Specifically designed for audio amplification, the kt88 has similar ratings to the american 6550 which was designed for use as a servo. The kt88 is a beam tetrodekinkless tetrode hence kt vacuum tube for audio amplification. Easily select individual manual pages and print out. This item gemtune gs01 hifi tube amplifier with tubes. Nov, 2012 the pcb was based on a low cost triodepentode driver tube and 6l6 family of output tubes that are available around the world. Ella push pull el34kt88 amplifier schematic diy hifi supply.
A kt88 will give you more top and bottom end at the expense of a more analytical mid range. Th e composite tube s ubstitu tion g uid eboo k co ntain s 5 100 receiving tube s ub sti tu tions. Modelled by carefully measuring an original gec tube where all the vacuum had leaked out. Both were introduced in the mid50s, with the kt88 capable of taking more voltage. Electroharmonix kt88 vacuum tube high power kinklesstetrode for use in amplifiers such as the marshall major. A pair of pushpull class a, ultra linear mono block tube amplifiers that can be used with several different vacuum tubes including kt77 6l6gc kt88 with a 12sl7 driver and 6no30 tubes. And there is the other thing too, personal preferences, and the amp itself plays a part circuit design.
The output tubes tried were 6l6gc, 6p3s, 6p3se, el34, 6550 and kt88. Stereo class a singleended audio amp handcrafted riverstone audio testedmatched pair 2 tubes 7pin ge jan 5654w fullytested vacuum tubes upgrade for 6ak5 6j1 6j1p ef95 ge 5654w platinum grade pair. Rftlys a2 kt88 tube integrated amplifier with headphone amp with bluetooth input. The simplest vacuum tube, the diode, contains only two elements. With a goldplated molybdenum alloy grid and carbon coated screen grid, the svetlana kt88 is the finest power tube of its type be ing manufactured today. Free vacuum tube data sheets free vacuum tube substitution. Before installing your new component, please read this manual carefully as it. Kt88 is a low distortion, high output power tube developed specifically for audio. Electroharmonix owns 100% of the largest remaining vacuum factory in the world. Please keep in mind for that the bias voltage of each tube is best at same level. Free vacuum tube data sheets free vacuum tube substitution guide manuals free radio tube data manuals free tube base diagrams. They are designed around vacuum tubes in the kt88 class.
The kt88 fits a standard eightpin octal socket and has similar pinout and applications as the 6l6 and el34. The kt88 is a beam power valve with an anodeplate dissipation originally of around 35 watts, it is sometimes referred to as a pentode by some people, but in fact the clue is in the title kt which stands for kinkless tetrode the main feature differences in the kinkless tetrode compared to the pentode and early tetrodes was the use of two. As a result, kt88s and 6550s are produce cleaner tones and have low distortion, making it popular amongst bass amplifiers and high end audio applications. Other common substitutes for el34 vacuum tubes are 6ca7 and kt77 tubes. Initial turnon insert the tubes in their proper sockets. Consonance cyber 880i kt88 tube intergrated amplifier hiai power amplifier.
According to one of their incredibly well researched tube profiles, the kt88 was a descendant of the 6550 which in itself was designed to meet the need for a low cost, high power tube. Reisong boyuu a20 mkii kt88 tube singleend class a intergrated amp 4nd meter upgrade. Discussion in audio hardware started by brian gupton, apr 11, 2014. With an anode to anode load of 4,000 ohms and 550 volts on the anode a pair run in ultra linear ab1 will deliver 100 watts at 3. Execution of any unauthorized repairs or modifications of the device result in a loss of warranty. The kt88 mono amplifier operating instructions the quicksilver kt88mono amp is designed to give the best of tube amp performance at a price previously not possible. Each replacement of tubes results in a change in the sound of. Oct 14, 2016 the kt88 is one of the few classic audio output valves. Radio receiving tubes and swap tips for the new 7 pin and 9 pin miniature tube types. Basically any amp using 6550s can use the jj kt88s.
The kt88 is one of the few classic audio output valves. If you are worried about any harmdamage, dont worry. We stock kt88 tube sets that are precision matched. 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.
Kt88 beam power tetrode t he svetlana kt88 is a beam power tetrode having a large standard octal base and glass envelope. If you have never used this facility before, click the help link on the left for detailed instructions. Two tubes in class ab1 give a continuous output of up to 120w. You can use acrobat for viewing and printing pdf files. According to the tube substitution guidebook by ha middleton, 6550 is an excellent sub for a kt 88. Its exclusive screengrid radiator fins reduce a major source of. The results from testing the amplifiers are quite similar to the results from the oddwatt 225 6sl7 srpp kt77 classa pushpull tube amplifier. To search for tube data, simple click the search link on the left. Like the svetlana, it has stood the test of time in reliability standards, but also it has certain sonic qualities that most tube and solid state audiophiles alike crave, e. All safety information provided herein is given as a guide only.
Vacuum tube integrated amplifier x7 zhuhai meishi audio equipment co. Operation manual of muzishare x7 kt88 x4 vacuum tube integrated amplifier power amp headphone author. If you want to add some real thunder to your old ampeg svt then the jj kt88s are the tube. Circuit diagrams are given illustrating the use of rca tubes in many practical applications. Imho the 8417 is a higain weak 6550 for consumer junk tho my bogen 8417 amps held up fine. Vacuum tube kt88, electroharmonix antique electronic supply. Co mb ines i n one volu me the con tent of th e bas ic book and suppleme nt s i thro ugh iv. Because of our tradition of supplying the highest quality tubes, we are proud that our ouput is the very best in the world for upgrade and replacement.
You just updated your jasmine piano kt88 pp tube amplifier. Since the resistor being measured has a value of 1 ohm, the voltage drop is equivalent to the current. Increased peak cathode emission from new cathode materials. Svetlana technical data kt88 high performance audio. Low noise, low distortion and maximum bandwidth were foremost in the design of these amplifiers. These specifications are provided asis, with no warranty of any kind.
Jungson v32 hifi pure tube kt88 intergrated amplifier. The pcb was based on a low cost triodepentode driver tube and 6l6 family of output tubes that are available around the world. Basically any amp using 6550s can use the jj kt88 s. Also included are expanded and updated replacement guides for. I have run both kt88 s and 6550cs in cary and audio research gear. In electronics, a vacuum tube, electron tube in north america, tube, or thermionic valve or valve in british english is a device controlling electric current through a vacuum in a sealed container. Operation manual of muzishare x7 kt88 x4 vacuum tube. The el34 is probably the narrowest of the medium glass octals. The kt88 shuguang has an absolute maximum anode dissipation rating of 50w and is designed for use in the output stage of an a. We have even run a quad of the kt88 s in a few evil twins and it is fat. The kt88s also sound great in the late 70s marshall mark ii amps in place of either the el34s or 6550s.
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