tube's lifespan and ensure the amplifier is not damaged. The information contained on this website is for information only. UPDATE 12/29/08 - I can't see any significant differences in. TubeDepot carries a selection of 6550 / KT88 / KT90 Power Vacuum Tubes. COLOR MONITOR. Tube data & amp schematics online 4CX250B If you're used to glass power tubes,the idea of getting 600W out of two tubes that are half the size of a 6550 might. Its midrage frequencies are ammazing. Tung Sol 6550 reissue: warm sounding, nice highs, not too expensive JJ KT88: good sounding, reliable. You need to try it and draw your own conclusions. (*)These specifications are provided 'as-is', with no warranty of any kind. com Symbols ~ Alternating current Class II electrical equipment: equipment in which protection against electric shock does not rely on basic insulation only, but in which additional safety precautions such as double. The nuvistor was developed by RCA and it was first introduced in 1959. The International Hazard Communication Standard (HCS) mandates that chemical manufacturers must communicate a chemical’s hazard information to chemical handlers by providing a Safety Data Sheet. New & NOS power tubes from Mullard, Tung-Sol, Telefunken, Sino, GE, Telefunken & more!. This VHT Tube Tester 2 includes two standard 8-pin octal-base adapters with dual banana plugs. 00 each for a matched quartet these days I guess. How you operate the tubes (ultra-linear, bias, plate voltage, operating points, etc. I am not saying that you should not purchase a Hickok like a 750 or 580 at the right price and condition, however in the absence of other c. The current can be calculated by dividing by the plate voltage. Improved vacuum tube models for SPICE simulations based on measurements of similar tubes in old texts. Electrical Data: Heater Voltage 6. The re-issue is now available with the same great performance without the high price that NOS Mullard GZ34 tubes command. Up to 100 watts push-pull can be had. It requires an octal socket. Moore's book: Transmitters Exciters and Power Amplifiers. ALL TUBES ARE TESTED FOR BOTH TRANSCONDUCTANCE / GM (THIS IS MOST IMPORTANT WITH PREAMPLIFIER TUBES) AND LP = PLATE CURRENT (LP IS MOST IMPORTANT WITH POWER TUBES). 6550: I don't use them in my amps, but Ruby 6550 tubes are highly recommended by techs I know and trust, especially for use in amps like Ampeg SVTs that put considerable high-voltage strain on the tubes. Please understand that we are talking about biasing power tubes (6L6, 7027, 6CA7/EL-34, 6V6 6550, KT-88, etc. It’s crazy that new production triodes are more expensive than a well. The following tube tester manuals are available at any time. pdf (87270 bytes) 8/52HM Ferranti CRR 8-52HM. Unfortunately, this doesn't cover every tube. Our technologies bring you closer to the music at a price you won't believe. We continually provide comprehensive safety and regulatory data on our Safety Data Sheets promoting safe usage and handling of our products. A very musical reaction, with great sound and finest details in mids and top-end; a linear and harmonious overall response with a very natural tone, make the TAD KT88-STR our favorite tube in the KT88 and 6550A class. Two tubes can be brand new in the original box, with one testing at, as an example, 6500 micro ohms, the next one at 8600 micro ohms. Find the latest entertainment and celebrity news, fashion. But it comes down to features, functionality, accuracy, repeatability and price! All tube testers are test equipment and will require maintenance and calibration from time to time. This is the classic against which all other 6550 tubes are compared. So as an example if your plate voltage is 450v, 24. The Svetlana 6550B / 6550 Vacuum Tube is a Russian glass octal type used in the output stages of high-fidelity audio amplifiers. com Symbols ~ Alternating current Class II electrical equipment: equipment in which protection against electric shock does not rely on basic insulation only, but in which additional safety precautions such as double. We use cookies to deliver you the best experience of LUCKINSlive according to our privacy policy which explains what cookies are and how we use them. For 6550, R50 has to be changed to 82K. This amplifier was featured on the February 2004 Issue of the "High-Fidelity Audio: Radio Technology" by Mr. I'm interested now in trying out some NOS Tung-Sol 6550s, they get universal raves. Title: 6L6GC Author: General Electric Subject: JA-FP-2000-12-26 Created Date: 12/26/2000 5:57:20 PM. Mesa Boogie, Marshall. TECHNICAL DATA SAFE Tank Drop Tube Fill Connection, Pressure Vacuum Vent and Reverse Float Level Gauge F20397A1123 6550 Gallon SAFE Tank w/1-1/2" ftgs & level. Title: 6L6GC Author: General Electric Subject: JA-FP-2000-12-26 Created Date: 12/26/2000 5:57:20 PM. It is not a topic that can easily be summarized. This VHT Tube Tester 2 includes two standard 8-pin octal-base adapters with dual banana plugs. Re-Mastered reprint, comb bound includes my 1 page bonus data for 1920's tubes including the WD-11, 201A and others 25 pages 8. The XPR 6000 is a digital workhorse with proven performance for demanding users. Technical Data. Welcome to Duncan's Amp Pages! This is an internet resource for those interested in guitar amplifiers, vacuum tubes, and design tools such as SPICE modelling. Tube Depot ( great folks) says that a pair will produce 300 watts yet the max plate dissipation is spec'd at 70 watts. We have schematics, layouts and media. All tubes were developed by our in-house research and engineering teams. Oldtuberadio. These are precisely matched at the factory and the results are marked on each set. Master bedroom features a large walk-in closet with solar tube and ceiling fan with lights. I have to output tube famous 5998A as indirect heater triodes. A balanced tube, known for its incredible bottom end and rich mids. 1, 1957, 2 pages:. 6681 4 Tubes. 6L6 is the designator for a vacuum tube introduced by Radio Corporation of America in July 1936. 6550 Schematic The chose of 6550 was unintentional, I had a quad EL34, but all but one were bad. TUBE AMP KITS, FACEPLATES, CHASSIS ON SALE! IN STOCK NOW, MADE IN USA!!! NEW ARRIVALS ON NOS TUBES & CAPS! NOS TUBES NEW ARRIVALS! NEW!!! TRIODE USA BLOG! - Customer Builds & More NEW CUSTOMER BUILDS PAGE!!! NEW CUSTOMER BUILDS PAGE 2!!! Bargain Bin - NEW ITEMS! Electron Tubes, Tube Amplifier Parts, and DIY Tube Amp Kits. They are scanned into my computer, all of the stray lines, dots, etc. el34 / kt77 / 6ca7 Popular in high powered audio and high end guitar amplifiers, characterized by greater distortion at a lower power compared to other power tubes. 6550 Application Data. In the high end audio world, there seems to be no ceiling - in terms of innovation, technology or even price! Psvane has been pumping out high end tubes since their inception back in 2010, and this year, 2018, they have launched ACME Supreme series with the intention to 'top the tube world, be it NOS or new production'!. Plastic tube for Climaset ® 6555 Article No. 6550-009-002 REV A www. Ideal for use in classic Marshall, Fender and Ampeg tube circuits, the 6550-TK offers outstanding performance and stability. I have used a couple of amps in the video and made cathode current and power output measurements on three types of tubes -- 6L6GC, KT88 and EL34. Single Ended Audiophile - Tube Output Suggested Tube Types Specifications SINGLE-ENDED "CLASSIC" TUBE TYPE - ULTRA-LINEAR OUTPUT TRANSFORMERS • Over designed for single ended tube output circuits (triode, tetrode or pentode tubes). For a push-pull plate load of 3600 ohms and idling dissipation of 40 watts, you'll probably want to go with the big bottles of the KT88/6550 family. jj-electronic. The Svetlana 300B uses ultra-pure carbonized nickel plate material and a proprietary oxide coating on the. The beam tetrode 6550, the standard tube in the Marshall AFD100, is similar to the 6L6 and came to life in 1955. Gerald Weber describes this mod in his book Tube amp talk for the guitarist and tech, in the chapter Tweaking your amp for bass (which is what I use my Bassman 100 for): "My favorite tube for bass is the 6550. I obtained the 6J5s from AES and they are the Raytheon brand, a beautiful tube with one triode section standing alone in the center of the glass envelope. View and Download IBM 6550-23N service manual online. ) Shipping Weight 1300 kg (2860 lbs. 6550 / kt88 / kt90 KT88's generate a lot power, handling significantly more plate voltage than other power tubes. It is one of the lowest-distortion tubes ever made, and is a close duplicate of the original Western ElectricTM 300B. tubes To create a push pull amplifier is possible to use triode and pentode but obviously to test many configurations like the ultra linear we need a pentode. Matched pair and quad are available. Back to Tube Data Page. SINCE its introduction many years. 6BQ5 7 Tubes. Anyway, they are made to run horizontal or vertically. prCedures can be obtained from the Safety Data Sheet. The ratings of the TAD 6550C-STR meet or exceed those of the classic 6550A tubes and can be used with great performance in any application asking for 6550. T12 (11/2in) argon filled white tube data is shown in brackets ([ ]) ()Table 2). The Tung-Sol data sheet says 35W max plate dissipation in triode mode, no mention of UL. 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. 4571, programmable transmitter, output 4 - 20mA/20 - 4mA, see Data Sheet 95. Did you know that Electro-Harmonix makes many of the world's greatest vacuum tubes? The next time you need to re-tube your guitar, bass, or hi-fi amp, be sure to insist on getting authentic Electro-Harmonix tubes. Gibson Tube Amp Specifications I would like to thank Björn Anger for permission to use the information contained here. Power output: 60 Watts per channel minimum continous (both channels operating) at 16 ohms from 20Hz to 20kHz with less that 1% total harmonic distortion (typically below. Tube 6550 or Röhre 6550 ID6062, Beam Power Tube, Octal (Int. Favorite PP 6550 schematic? deicide67, Tubes / Valves, 31, 6th October. NURS 6550 Week 6 Midterm Exam Walden University Adv Prac Care in Acute Set NURS 6550 Week 6 Midterm Exam Walden University Adv Prac Care in Acute Set NURS 6550 Week 6. Hot Rox stock all vlaves for every amp manufacturer including NOS valves, correct bias tested valves for Mesa Boogie amps 12AX7, ECC83, ECC82, EL34, 6L6, KT88. The Svetlana 6550B / 6550 Vacuum Tube is a Russian glass octal type used in the output stages of high-fidelity audio amplifiers. But in the power voltage range that it was designed for, the 6AS7 to this day retains several essential characteristics for OTL operation: Extremely high linearity (a legacy of its ancestry as well as original use requirements), relatively low filament requirements, extremely high. Comparing Eight Tubes For Low Power Amplifiers Article Submitted By Mike Zivkovic Of Teresonic. This applies especially to power tubes like EL34, 6550, KT88's, etc. 6AX7 1 Tube. The stem is a 1" sq. rs Post author June 29, 2018 at 6:35 am Postovanje Lado, Imam 6GH8A, cini mi se da idu tri komada u Kenwood TS510, a imam i pobudnu 12BY7 i izlazne 6146B. 00: Hickok 539B/C: Tube Test set up manual, obsolete data, dated 1957 contains the 1920's - '40's tube data omitted in the 1974 book. Muira still prefers the Svetlana 6550 and New Sensor’s Tung-Sol KT120 has gained a few converts. Here again people. TC Tubes specializes in precision testing and matching of vintage and new production vacuum tubes for guitar players, DIY tube audio enthusiasts, and audiophiles. Nuvistors were the latest tube development at just about the same time as the introduction of the first integrated semi­conductor circuits. 27: How to Test 6550 Tube on Hickok 6000 (6. Now USD ~ USD /piece. 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. The widest range of preamp tubes available in stock ready to go can be found right here at Evatco. ARS Electronics Since 1947 - Audio Catalog Page. Please enter the tube number: This database contains data on thousands of tubes. Each tube is meticulously measured for all critical parameters of performance including transconductance, gain, noise, and microphonics. MISUMI offers free CAD downloads, No MOQ with short lead times. Motorola XPR 6550 Accessories. 6BQ5 7 Tubes. Electrical Heater: Min. 5% distortion. 6550 TUNG-SOL. If it only has a 2 pole relay like many did, it will be a consistent tube eater because the bias is locked on. Only a few tube types were recommended by their manufacturers as being suitable for ultra-linear connection, the most notable being EL34/6CA7, EL84/6BQ5, KT88, 6550, 7027 and 8417 - see manufacturers' data sheets for typical circuit values. Many parts and accessories are still available for this radio. Referring to the data sheet, we can see that an EL34 can be operated from a very wide range of HT potentials. I think better than 300B for cost(C/P). Favorite PP 6550 schematic? deicide67, Tubes / Valves, 31, 6th October. COLOR MONITOR. Dual triodes also played a part in early electronic computers, which had thousands of them. The drive circuitry of the control grids is not shown - I assume perfect. Title: 6L6GC Author: General Electric Subject: JA-FP-2000-12-26 Created Date: 12/26/2000 5:57:20 PM. Tube Depot ( great folks) says that a pair will produce 300 watts yet the max plate dissipation is spec'd at 70 watts. Without a thorough knowledge of tube types and their substitution possibilities, you may be over-paying for your new or NOS tubes you employ, or just pick the wrong ones. I do not know why but I prefer simple, low power triode designs. Title: 7868 Author: RCA Subject: JA-FP-2002-05-26 Created Date: 5/26/2002 12:49:51 PM. Through the 6P3S-E, there seemed to be a touch of iciness - perhaps an artifact of the recording - but I've heard more richness with other output tubes, notably many NOS units like the Mullard EL34 or the Tung Sol 6550. 1, 1957, 2 pages:. The Golden Dragon KT88 Retro is produced to a similar shape to the original GEC/MO design, and has identical operating characteristics. 6L6 is the designator for a vacuum tube introduced by Radio Corporation of America in July 1936. With the superb image algorithm, ZKX6550V could offer clear scanning image, which allows operators to identify potential threat items visually. The cathode is designed so that when it is heated, it freely emits. Warning: 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. Scroll down to see sets of 2 (pair), 4 (quad), and 6 (sextet). The KT88 or 6550 can be used in place of the 8417 in Quicksilver 8417 mono block amplifiers as well as other amplifiers. Follow the links on the left to find the tubes, valves, sockets, grid caps, and capacitors for your antique radio, ham radio, hi-fi stereo, or other electronic piece. 00 one can modify these amps to accept 6550 or EL 34 tubes. The ultimate in musical tone and smooth overdrive, the STR delivers the sound that established Tung-Sol as the benchmark of quality. 00: Hickok 539B/C: Tube Test set up manual, obsolete data, dated 1957 contains the 1920's - '40's tube data omitted in the 1974 book. Additional info & photos provided by Charles Kotlaris. A tube manual or tube manufacturer's technical data sheets should be consulted first, before making a decision on a proper output transformer. , 12AT7, 12AU7, 12AX7 …. Specifically designed for audio amplification, the KT88 has similar ratings to the American 6550 which was designed for use as a servo amplifier. aluminum tube with ½" NPT Nipple. Computer matched valves and curve traced for platinum matching. Ford Performance M-6550-3V Details Modular. Sovtek and EH 6550: These are the same tube and both are boxy Winged C 6550: We actually like this tube better than the chinese and russian KT88's. ) will change optimum plate load impedance. I'm interested now in trying out some NOS Tung-Sol 6550s, they get universal raves. 00 no matter how many tubes you buy. Well, here is a tip from test equipment guru Norm Leal; Here is a good, easy way to check for gas on an Eico 666. The history of the vacuum tube or thermionic valve brings many individual discoveries together that enable the invention to be made. Hi, I just wonder if anybody know the test data of kt88 or 6550 tube for Hickok 539c or tv7d/u tube tester? Any good website for looking test data info?. 12 Agilent 6200 Series TOF and 6500 Series Q-TOF LC/MS System Concepts Guide 1 Overview Help for data acquisition Prepare the instrument To learn how to get started with the Agilent 6200 Series TOF and 6500 Series Q-TOF, see the Quick Start Guide. Tube Substitution Table > Dealer Login Promotions Contact Us. For 6550, R50 has to be changed to 82K. Unfortunately, this doesn't cover every tube. I like 300B/2A3 SE but we can get 6550/KT88 are easly to get one of poket maney than 300B. McShane Design - Citation & Other Vintage Tube Gear Fine Vacuum Tubes & Vacuum Tube Parts/Kits Now - Pay By Credit Card or PayPal! See "How To Order" below! Need tubes? Scroll down for a huge list of new production, NOS, and great used tubes. My test results refer to tube data sheets provided by the original tube producers. It is about as large as that design can be pushed. These are not simple photocopies. It isn't the most natural sounding album but has great dynamics and a dramatic soundstage. We well various parts for Vintage valve tube guitar AMPLIFIER DIY&REPAIR project 8PIN Teflon Tube Socket for 6550,KT88,EL34,6V6,5AR4,KT66: GZC8-D-G My Account FAQ Shopping Cart. The Svetlana 300B uses ultra-pure carbonized nickel plate material and a proprietary oxide coating on the. The re-issue is now available with the same great performance without the high price that NOS Mullard GZ34 tubes command. pdf (93102 bytes) 6/22PM Ferranti CRT 6-22AM. The TELEFUNKEN 6550-TK is a high output power tube suitable for use in guitar amplifiers and Leslie speaker systems. We are not responsible for any malfunctions of equipment due to inaccuracies in these tables. The International Hazard Communication Standard (HCS) mandates that chemical manufacturers must communicate a chemical’s hazard information to chemical handlers by providing a Safety Data Sheet. 6550 tube represents the all American high output tube sound, and Tubes For Amps stocks the best of current production 6550 tubes. 0 bath, 1445 sqft single family home located at 6550 Ponto Dr SPC 116 built in 2015. The information below is accurate to the best of our knowledge. the 6550 is a beam pentode power amplifier primarily designed for audio service. The 659 6550 is a high quality xenon lamp. 6550 Schematic The chose of 6550 was unintentional, I had a quad EL34, but all but one were bad. I have sucessfully used KT88,KT90's and 6550 is Quicksilver mono block amplifiers with only a slight bias circuit tweek. There are hundreds of pages of Tube amp information on my library page. The circuit above is complete circuit contains tube amplifier circuit diagram and power supply circuit diagram. Only a few of the most popular tubes are shown. Since at current prices I would have to sell this tube for. DIY KT88 + 6SN7 push-pull Amp / Part 1. The GECKT88 was a higher power version of the original KT66. 6550 / kt88 / kt90 KT88's generate a lot power, handling significantly more plate voltage than other power tubes. Ideal for use in classic Marshall, Fender and Ampeg tube circuits, the 6550-TK offers outstanding performance and stability. 0544 A or 54. • Enclosed (shielded), 4 slot, above chassis Type "X" mounting. Dont waste your time. This is the classic against which all other 6550 tubes are compared. 5 watts per tube. 6550A-STR Tube Data Sheet 6 Month Limited Warranty against Manufacturing Defects. It may include an integral rod. There are hundreds of pages of Tube amp information on my library page. The Svetlana 300B uses ultra-pure carbonized nickel plate material and a proprietary oxide coating on the. Among my first equipment reviews for this website was an evaluation of the Bruce Moore Dual 70 tubed power amp. Title: 6550 Author: Tung-Sol Subject: FP-2008-02-10 Created Date: 2/10/2008 4:38:31 PM. So in a Marshall Major the tube is already being pushed past its limits. pdf (238751 bytes) 6559 Sylvania TWT. OurFavorite Tube in the KT88 / 6550 Class. Current conditions and forecasts including 7 day outlook, daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill (when applicable) historical data, normals, record values and sunrise/sunset times. Regarding the picture above; No, I didn't power-up with one of each installed and yes, I had four of each of the above tubes for the shootout. I have to output tube famous 5998A as indirect heater triodes. 0544 A or 54. PREMIUM SELECTED TUBE 6550A (8) FACTORY MATCHED - GE Type. Tube 47 or Röhre 47 ID2676, Vacuum Pentode, UY-Base, 5 Pins (USA, April 1927) and Power/Output shown. There could be benefits to further reductions in output tube G1 resistance. Tested under 2%. They are scanned into my computer, all of the stray lines, dots, etc. Power Grid Tubes. cleaned up and then printed on my Laserjet 5000 printer. The TELEFUNKEN 6550-TK is a high output power tube suitable for use in guitar amplifiers and Leslie speaker systems. Most of them are special designed with gold pins for long time to use. 811A Transmitting Tube, Taylor Select. kt88 or 6550 Power amplifier Αναρτήθηκε από Electrons Ετικέτες AMPLIFIER , AUDIO , AUDIO TUBE AMPLIFIER , GUITAR , GUITAR AMPLIFIER , HI-FI , TUBE. Svetlana 6550. According to the factory specs, the 6550 in single-ended mode is capable of a fairly good power output. It features four 6550 output tubes and delivers 200 watts of crowd shaking power. This single-Ended (SE) 6550 design is based on a minimonitor constructed by Lars Ohlsson of ElektroAkustik & Music. pdf (68295 bytes). A simple switch can be. Solar 6550-1 Application. The TELEFUNKEN 6550-TK is a high output power tube suitable for use in guitar amplifiers and Leslie speaker systems. If using EL 34 tubes, pin 1 has to be jumpered to pin 8. 6681 4 Tubes. 6AG6 1 Tube. The SED tubes in general I find a kind of lesser GE's. This VHT Tube Tester 2 includes two standard 8-pin octal-base adapters with dual banana plugs. If it only has a 2 pole relay like many did, it will be a consistent tube eater because the bias is locked on. We well various parts for Vintage valve tube guitar AMPLIFIER DIY&REPAIR project 8PIN Teflon Tube Socket for 6550,KT88,EL34,6V6,5AR4,KT66: GZC8-D-G My Account FAQ Shopping Cart. I have to output tube famous 5998A as indirect heater triodes. First, here's a website that I suggest you read if you're really interested in understanding how tubes work, and the differences between triode, tetrode, pentode, beam power tubes and so forth. I think Eurotubes goes into detail on it. McShane Design - Citation & Other Vintage Tube Gear Fine Vacuum Tubes & Vacuum Tube Parts/Kits Now - Pay By Credit Card or PayPal! See "How To Order" below! Need tubes? Scroll down for a huge list of new production, NOS, and great used tubes. This single-Ended (SE) 6550 design is based on a minimonitor constructed by Lars Ohlsson of ElektroAkustik & Music. Power Tubes NOS Tubes PrimaLuna Brand Tubes. Amp DIY • 6550 • Gear • Amps • 6L6 • 6V6 • August 2015 • EL34 • EL84 • Tube Combo • Tube Head • Ampeg • Fender • Marshall • Vox Power Trip: A Guide to Power Tubes and Their Signature Sounds. 6B2 1 Tube. The tube compliment is two 6550 per side and one 12au7 as a driver. NURS 6550 Week 6 Midterm Exam Walden University Adv Prac Care in Acute Set NURS 6550 Week 6 Midterm Exam Walden University Adv Prac Care in Acute Set NURS 6550 Week 6. CAUTION: Never substitute a tube at random without doing your homework first!. ) will change optimum plate load impedance. This reference identifies the HART 75 as a CW. Its midrage frequencies are ammazing. This pair is matched, see test results below. The power supply would have to be capable of supplying twice the current, thus twice the power to support four 6550 tubes. Precision 910, 912, 914, 915, 920, 922 & 954 tube tester data Obsolete & supplemental tube set-up data. All same date code. The Tung Sol 6550's are around $150. Tadaatsu Atarashi. The Anode pin is on the top of power transmitting tubes (right pic) to insure high Voltage flashover cannot. You pay with your time and your energy. Tube Depot ( great folks) says that a pair will produce 300 watts yet the max plate dissipation is spec'd at 70 watts. This tube is a true workhorse and a great value, and shipped as original 6550 tube in many amps from the factory. The anodes are connected to the primary winding, the cathodes to ground (circuits 1, 2, and 3), and the middle of the primary to the high-voltage supply. Push Pull 6550 DIY audio tube amps. Glass octal type used in the output stage of audio amplifying equipment. R49 sets the bias level. pdf (902849 bytes) 6550A General Electric P 6550A. The RC coupled amplifier data for a 12AU7 are as follows. I tried searching this forum for clarity on where the ideal bias setting is but am having some trouble. Muira still prefers the Svetlana 6550 and New Sensor’s Tung-Sol KT120 has gained a few converts. 6CA7 56 Tubes. This ranges from glazing our own tube bases, to producing our own cathode wire and emission. This was ground breaking because one pair 6550 power tubes could produce the same power as four EL34 or 6L6 tubes. COLOR MONITOR. Sovtek 6550WE is a straight bottle 6550 modeled after the original GE 6550A. Tonally, this 6550 tube has a smooth, extended high end, slightly warm midrange with great imaging, and a tight bottom end. This tube offers low noise, low microphonics, and warm smooth tones at a great price. GD KT88 Retro. 100% GUARANTEED & TESTED TUBES All tubes are tested for Gm, shorts, leaks, gas, and noise on one of our vintage, calibrated, or state of the art digital tube testers. The information below is accurate to the best of our knowledge. This amplifier was featured on the February 2004 Issue of the "High-Fidelity Audio: Radio Technology" by Mr. The nuvistor was developed by RCA and it was first introduced in 1959. I also purchased the Tung Sol 6550s from AES. ("Basing" refers to the order in which the internal elements of the tube are connected to the pins on the bottom of the tube. The following tube tester manuals are available at any time. Mechanical Data:. 005% at one watt). At that time, I praised everything about the amp save for its excessive sweetness. When Svetlana began direct US export of audio tubes in the mid 1990's, they also used the 6550C designation as it was the next variant they produced after their 6550B, and aside from microphony, it is a MUCH superior tube to the junk Chinese 6550C. Power Tube Comparison El34 vs El84 vs 6V6 vs. First, here's a website that I suggest you read if you're really interested in understanding how tubes work, and the differences between triode, tetrode, pentode, beam power tubes and so forth. I would think it should be capable of testing a 6550 considering that it is not an obscure exotic tube. I think better than 300B for cost(C/P). It was originally designed for high-speed digital computers and was manufactured using very high quality materials under rigid controls and underwent rigorous testing. Parker Hannifin / Instrumentation Group Datasheets for Tube Fittings Tube fittings connect runs of tubing for in-line, offset, multi-port, and mounting configurations to other tubing sections, pipe, hose, and other fluid transfer components. 0” Dimensions 277. Please request or look on the web to see our paper: The Virtues of Power Tube Matching. watch 1/2 primary current rating of whatever you decide to use - the two OT below are well within current ratings for 2 x 6550 KT88 and both are 100W iron. Only a few tube types were recommended by their manufacturers as being suitable for ultra-linear connection, the most notable being EL34/6CA7, EL84/6BQ5, KT88, 6550, 7027 and 8417 - see manufacturers' data sheets for typical circuit values. 8W rms at triode mode. 5 watts per tube. 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. Personally, I find the New Sensor Tung-Sol RI the best 6550 for guitar. New remake of the GE 6550, with tough straight bottle and polished metal base. Please enter the tube number: This database contains data on thousands of tubes. A: The vacuum diode is a two-terminal device having two active elements, the cathode and the anode (or plate). CAUTION: Never substitute a tube at random without doing your homework first!. The type 5691 Tube is a "premium" version of the type 6SL7. pdf (606171 bytes) 6551 Sylvania MAG 6551. Since at current prices I would have to sell this tube for. N9TEW TUBE SALES * Limited stock or no stock email request TUBE PAGE LINKS. Each TAYLOR Select tube is tested by RF Parts prior to shipment, and includes 1 Year Limited Transmitter Tube Warranty (against manufacturing defects and workmanship) through RF Parts. May still have been the rebasing of conventional audio tubes. Please enter the tube number: This database contains data on thousands of tubes. For matching power tubes, short of a curve tracer, a Maximatcher would be the best and easiest to use. The nuvistor was developed by RCA and it was first introduced in 1959. It blew fuses regularly, and when I looked, it had a pair of el-cheapo chinese noname EL34s in it. Additional info & photos provided by Charles Kotlaris. 0 bath, 1445 sqft single family home located at 6550 Ponto Dr SPC 116 built in 2015. The latest version of our TAD KT88-STR is built in the style of the early British MOV KT88. I have used a couple of amps in the video and made cathode current and power output measurements on three types of tubes -- 6L6GC, KT88 and EL34. Higher mu tubes have less anode current for a given negative grid bias, all other things being constant. 9 cm (L x W x H) 109. Shop Da Vinci Artists' Permanent Watercolor - Thioindigo Violet, 15 ml tube at Blick. These are not simple photocopies. For operation at the 100-watt output ratings, the cur- rent swing Of 4 to 41 ma. A perfect fit for the contemporary landscape design, this low voltage path light fixture is constructed of die-cast, copper-free aluminum for strength and reliability. A balanced tube, known for its incredible bottom end and rich mids. I have sucessfully used KT88,KT90's and 6550 is Quicksilver mono block amplifiers with only a slight bias circuit tweek. Pursuant to the schematic, the JSX comes with EL34 tubes. Especially, during the 1950's war effort, it was a common practice for USA factories to source tubes from each other and re-label them. The single-ended amplifier circuit uses a 6550 high power tetrode vacuum tube in the output stage. Protection tube stainless steel 1. Power Grid Tubes. Electro Harmonix EL34. I think Eurotubes goes into detail on it. Direct heating cathode, medium power consumption triode is used for class A amplification. But in the power voltage range that it was designed for, the 6AS7 to this day retains several essential characteristics for OTL operation: Extremely high linearity (a legacy of its ancestry as well as original use requirements), relatively low filament requirements, extremely high. Buy from the experts and avoid hassle! _____ New Plate Current Matched Quad (4) Mullard Reissue KT88 / 6550 Vacuum Tubes. It is about as large as that design can be pushed. Tube 47 or Röhre 47 ID2676, Vacuum Pentode, UY-Base, 5 Pins (USA, April 1927) and Power/Output shown. d = Diode Unit. Use of these parameters shall be entirely at the user's own risk.
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