300b tube datasheet amp pdf. Measurements show it achieves very low distortion of 0.

300b tube datasheet amp pdf Direct heating cathode, medium power consumption triode is used for class A amplification. 08. pdf This document provides a schematic for a D3A/300B DRD SET amplifier power supply. Morrison's SE 300B tube amplifier circuit which I will refer to as the "original schematic". Some 300B copies cannot even take more than 25-27W dissipation. VACUUM TUBE 300B Result Highlights (5) Part 300B Base and vacuum tubes employ medium, four-pin thrust type bases suitable for use in estern Electric 143B or similar sockets. 01 3 3 1969. When you intent to get the maximum out of a 300B, and operate this tube at the limits of safe operation, it is a better idea to use the 300B-XLS in such a case. ) into Klipsch Heresy IV’s and j just ordered a pair of EML 300b I look forward to breaking in. If not checked with care, overheated anodes may result, and such a damage is not covered by the guarantee. 01 6 6 1969. With the Ref 3. Standard ELECTRON TUBE DATA SHEET WESTERN ELECTRIC 437A ELECTRON TUBE DESCRIPTION The ^37A electron tube is a high figure of merit triode with an indirectly heated cathode. Originality by 300B tube Manufacturer. 300B A. For 10 months, Boele had the opportunity to live with and extensively use a pair of these 300Bs and his impressions and extensive testing could be directly contrasted with his considerable collection of 300B tubes - Chinese, Russian, Czech and Slovak clones, as Jun 24, 2024 · The 300B-Mesh can replace a standard 300B-Mesh in several cases, but not in all cases. The Datasheet Archive. Other JJ Electronics tubes Additional Information and Downloads The output tubes used are the Svetlana 300B. The JJ ECC99 vacuum tube is used as a driver in 300B and 2A3 amps, a preamp tube, a output tube in headphone amps, just to name a few. 450V would require less current unless you want to cook the tube. Aug 27, 2019 · The other design factor is the driver that is needed to deliver 2x the 300B bias voltage. diyAudio Community diyAudio Store. 300-A & 300-B VACUUM TUBES Base and Mounting—a-These vacuum tubes employ medium, four-pin thrust type bases suitable for use in Western Electric 143B or similar sockets. The bass management at very low frequencies is also remar-kable, out of the ordinary for a 300B tube stage. The 300B tube has the bay-onet pin so located that it may also be mounted in a Western Electric 100M, 115B or similar socket. ONE PAIR LEFT IN INVENTORY Apr 24, 2019 · What I notice about the Cary 300B amp schematic: With 450V across the 300B, I bet it is not a 2. Use 450V, and a 2. It uses a Edcor XPWR153-120 power transformer to provide voltages of 685VDC, 7. The 300B tube has the bayonet pin so located that it may also be mounted in a Western Electric 100M, 115B or similar socket. (Check a detailed data sheet for the specs on the resistance 5AR4 Nov 20, 2020 · The 300B is designed for and traditionally used in an amplifier’s power stage. 5k or a 3k primary. Mar 14, 2020 · YAQIN MC-100B KT88 HiFi Vacuum Tube Push Pull Integrated Amplifier, HIFI Valve Tube Pure Amplifier, 110V/220V, RCA Jack x 4 Input, 50Wx2 / 25Wx2 Output, KT88/6N8P/12AX7B tube AMP (Silver) 1 $1,699. Part #: 0ZCF0300BF2C. If the 300B bias is -90V, you need +/- 90V from the driver. Preamplifying tubes; Power tubes ; 300B is a power triode with a directly heated cathode and power of 40 W, mostly for Hi-Fi application These vacuum tubes employ medium, four-pin thrust type bases suitable for use in Western Electric 143B or similar sockets. 2. pdf (121747 bytes) 301 Marconi c U31. Some information about the 300B Mesh tube. Jun 14, 2024 · The 300B-XLS will bias in any amplifier the same way as the original WE300B. 08% at 1W and 0. 01 4 4 1969. Contact us for quantity discounts. For example, I can string together certain 12AU7->12AX7->300B combo's from my boxes of tubes to reach what I seek, and in Elekit 300B amp, I can get closer to a sound signature I want with Genalex 300B tube than Takatsuki 300B. Schade negative feedback: When using a triode wired pentode (as this circuit does), or when using a true triode for the input tube . pdf (137897 bytes), 300B. Datasheet Sep 2, 2023 · And this is while running 21 year old basic Sophia 300b tubes (SN 292 and 309 with original data cards) I’m told are original to the amp, 1944 model 6F8G matched drivers (it came with SOVTEK 6NHC tubes - 6SN7 equiv. If the 300B bias is -45V, you need +/- 45V from the driver. Description: Surface Mount PTC. It is one of the lowest-distortion tubes ever made, and is a close duplicate of the original Western Electric 300B. If In keeping with the tradition of Genalex to provide the highest quality tubes, New Sensor has released the Genalex Gold Lion PX300B audio power triode. Continue HERE for the data sheet of the only real EML 300B-Mesh. J. Measurements show it achieves very low distortion of 0. 300B TUBE Result Highlights (5) Part ECAD Model Vacuum tube 300B-98 is new and improved version of 300B. So please read this data sheet carefully. COND. 0V Gm range = D (6000 µMhos) AVG MUT. pdf - Free download as PDF File (. 1k : 5 and 3. Vacuum tubes. Stamou has built this amplifier with Lundahl LL1623 audio output transformers. This tube is the highest quality 300B type available and is considered to be an upgrade in any 300B amplifier. The schematic for the J. The 6S4 is a terrific driver tube and can even make a pretty decent output tube. Build an outboard PSU to give the 845 the stupid high voltage it needs, slap some different output transformers on the thing and boom, done and done. 2 A Amplification Factor 3. TRiode Base: 4-PIN CERAMIC BASE Uf = 5 V if = 1,3 A Typical Characteristics: Ua = 300 V Ug1 = -61 V ia = 60 mA S = 5,5 mA/V Ri = 700 Ω µ = 3,85 Limiting Values: Ua = 450 V Wa = 40 W Maximum plate curent of everage tube for fixed bias ia = 70 mA Maximum plate curent for manually adjusted grid bias or self-biasing ia = 100 mA Created Date: 9/6/2001 3:17:38 PM %PDF-1. Triode Lab 45M2 ffx / 45RS-R) so I am wondering if I could do even better than Yamamoto? Do the more expansive amps have better parts in them? Is there some "best" 45 tube amp DIY design? What are the best parts for the 45 tube amp? The base amplifier is a Tubelab SSE board, hacked to take directly heated tubes. CHARACTERISTICS The 300B has justly won the reputation for being a superb output tube in single-ended amplifiers. It measures 6. The 300B tube has the bayonet pin so located that it may also be mounted in a Western Electric 100M, 115B, or similar socket. 6 %âãÏÓ 47 0 obj > endobj 55 0 obj >/Filter/FlateDecode/ID[2A92D33507794100BFB4F1ADE2F5AD85>]/Index[47 14]/Info 46 0 R/Length 59/Prev 2418077/Root 48 0 R 300B Vacuum Tube Base and Mounting These vacuum tubes employ medium, four-pin thrust type bases suitable for use in Western Electric 143B or similar sockets. 5k or 3k primary only if the 300B is run very hot (88. santitrucco. It is possible to replace any 300B with this tube. It is nor always possible, simply plug & play a 300B-Mesh into a 300B amplifier. Please see the substitutes at the top of the page for more details Tube Amplifier Output Transformer LL2785C for 300B and similar triodes in SE applications The LL2785C is an output transformer for single-end tube amplifiers, suitable for the popular 300B electron tube. 9 _____ Power Amplifier class A1 Maximum DC Plate Voltage 550 V Dissipation 50 W DC Plate Current 120 mA View results and find 300b tube datasheets and circuit and application notes in pdf format. Takatsuki Electric Co. 00 ECH81 page sheet date 1 1 1969. Electron Tube Data A. 4 in (16 cm) high and 2. Available in singles, matched pairs, and matched quad sets. Sill it can be used in two ways if you want it. 1 cm) wide, and the anode can dissipate 40 watts thermal. This tube boasts a classic 300B tube sound signature, a distinct emphasis on warmth and midrange presence. Datasheet: 1MbKb/4P. You will not get a US Warranty. Takatsuki 300B Vacuum Tubes. 300B triode takes a new dimension, with exquisite treble and mid-range. These two methods are explained here. 300B tube pre amp design based on schematic I am looking to convert my Audio Note Legend amplifiers from using 6SH7 preamp tubes to 6SN7. Just plug it into any 300B amplifier, and the tube will set itself exactly to the original 300B working point. Dec 17, 2018 · On the other hand I know there are much more expansive 45 tube amps (e. C. Member 2khz noise in 300B SE tube amp. This tube has several features that that provide distinct advantages over the old DHTs. Takatsuki Electric Industry Co. No. 2k : 8 (B version to match first set of PCBs) The LL2770B is a tube output transformer primarily designed for 300B tubes in SE applications with cathode feedback. 1 you get the full enchilada—an integrated amplifier complete with a phonostage, gorgeous cosmetics, and excellent fit and finish. The original Western Electric type 300B electron tube for audio amplifiers. The use of this tube requires some care, because it is not a Plug&Play replacement for any 300B. The Electro Harmonix 6H30PI (6H30π) vacuum tube, a variant in the 6H30 preamp tube family, offers a unique sonic profile that distinguishes it from its counterparts. Be sure to read the great 300B tube review and comparison from the Wall of Sound. It uses vintage tube technologies like choke-loaded triode and direct-coupled designs with no negative feedback. Dec 22, 2024 · But I didn’t want to revisit the 300B or 2A3 DHT power triodes, I wanted something different and something that didn’t have the obvious drawbacks of the DHT tubes. 01 5 5 1969. Nov 22, 2024 · If center tap is hum, then use 2 - 100r resistors to reduce the hum. The tubes may be mounted in either a vertical or horizontal Base and Mounting— These vacuum tubes employ medium, four-pin thrust type bases suitable for use in Western Electric 143B or similar sockets. 300B-N is directly-heated type cathode triode, used as class A1. F. High Resolution Tube Amplifier Output Transformer LL2770B (3. Be aware of Grey Market. electron Tube Data sheets - 3. Great overall performance, solid extended bass, great mid range detail and HF extension. Tomer gives hints: slow filament heating, slow B+, not pulse mode (hot one moment, cold the next). Distortion is two tone IMD, 4:1, with tones of 200 Hz and 6K to compensate for the poor low frequency response of the Edcor OPT. 2VAC, and 6. This one is a pentode and the other is a dual triode I need to change the preamp circuit. T. We've got a large supply and 6C33 sockets for it as well, if you're building your own amp. Please take a look at the SE 300B schematic for a description of Mr. Honestly though, I would not go with 845 tubes. I tried a number of different tubes (including the ones recommended on the Tango datasheet) to drive the NC-14, and this was the best I had. The tubes may be mounted in either a vertical or horizontal position. For 3% THD and 32W plate dissipation the output power can be about 11-12W, depending on the quality of the tubes. pdf. Shuguang Vacuum Tube 300B Series Triode: 300B-98 (300B) DESCRIPTION 300B-98 is compatible with 300B Vacuum tube 300B-98 is new and improved version of 300B. Read more about it here. The plate voltages on the 300b tube measures were as follows. Sep 6, 2014 · Current (new) production 300B tubes like the Electro-Harmonix 300B and the JJ 300B sound wonderful at a fraction of the Western Electric 300B price. Mostly those with punched or mesh plates. 12 2 2 1969. Protection diodes, capacitors, and chokes are included to filter voltages. Gallery Archive Articles. 300B-C long-life design, use pure graphite anode and its plate power dissipation can reach up to 60W. The EML 300B Mesh is a wonderful and most amazing tube. Manufacturer: Bel Fuse Inc. 300B A. etc. 0V selectors = ER3200-0 bias = -14. Please see the substitutes at the top of the page for more details Aug 25, 2022 · Renowned tube expert Michael Boele offers his long-term review of a pair of 2021 new production 300B directly heated power triodes. After some investigation I finally settled on a big dual pass triode, the 6336. In triode mode hasn't enough gain to use in two stage amplifier. To see his build, visit the DIY 300B Single-Ended-Triode (SET) Hi-Fi Amplifier project page. , the sole Japanese manufacturer of vacuum tubes for High‐End Audio, enjoys a long 60‐year history in manufacture of semiconductors and electronic devices, though today it’s mainly engaged in production of LED elements. Vacuum tube 300B gold is a triode with coated filament in the glass bulb, designed to amplify low frequency power in radio engineering devices. But it will take some rethinking to imagine this great tube in a non-audio Mar 30, 2022 · Look up almost any 5AR4 data sheet for a more proper and traditional way of drawing the elements. Mar 13, 2021 · It has engaging tone (due to the mesh anode), but requiring 20V heater supply, pentode mode has large output impedance, and in pentode mode -as many high gain tube, if you make the layout not enough attention- tend to oscillate. Only 50 pairs made each month for the entire world. Though 40 Watt is possible, this is a peak value only, and no normal working point. = 4000µMhos Based on the plate curves done on a uTracer ( The uTracer, a miniature Tube Tester / Curve Tracer. 300bs are pretty common driver tubes for the 845. pdf (178412 bytes) 301 Osram c 301. Dec 5, 2021 · Possibly original WE tubes can work at 36W with no issues. 2% at 10W output into 8 ohms, due to careful individual stage optimization and push-pull tube Designed as an output tube for battery radios that put out a couple hundred mW of audio, its low Rp makes a really good interstage transformer driver. Having been exposed almost exclusively to KT88 and EL34 designs this past year, I jumped at the opportunity of reviewing something different—a 300B-based push-pull amplifier. Back Shop All Equipment Merchandise 300B Vacuum Tube 91E Integrated Amplifier 97A Monoblock 116C Pre-Amplifier 203C CD player Phono Termination Plugs KS13385 Hookup Wire 755A Speaker Cone Panaural Authorized Dealers 777 Midrange Driver KR AUDIO ELECTRONICS HI VACUUM TUBE KR 300B General data Filament specifications: DC/AC Voltage 5 V DC/AC Current 1. (Buy now to guarantee a pair) Price is per matched Pair. C Oct 12, 2013 · Hickok 539B/C factory supplementary data sheet for WE tubes, are: filament = 5. pdf) or read online for free. You'll be interested to see its use in the upcoming 4th edition of "Valve Amplifiers. &T. 274b rec tube 408v, GZ34STR 426v and Linlai 5u4g 406v. Quality maintained with all types of 300B Today, the 300B triodes are manufactured by View results and find vacuum tube 300b datasheets and circuit and application notes in pdf format. Oct 29, 2023 · I test three different rec tubes. World's finest 300B produced today. Later data sheets say 40 Watt. . 3 0 0 B Issue 1, January 1950 A. , Ltd. "The best 300B tubes we have ever heard" Mini Review by True Audiophile. 3VAC. 8 years after the release of the TA−300B, the amplifier with original vacuum tubes “TA−S01” was born as a new audio product of Takatsuki Electric Industry. In electronics, the 300B is a directly-heated power triode vacuum tube with a four-pin base, introduced in 1938 by Western Electric to amplify telephone signals. It was designed primarily for the output amplifier of the L-3 tandem two stage amplifier. Co. 79. So, what voltage on the plate at the 300b tube is best for longevity? Jun 13, 2024 · Serious warning for FAKE mesh tubes. Jun 11, 2021 · The review goes into 2 pages on the history of Western Electric 300BHerb is using the TU-8600S with a selection of 300B tubes, Takatsuki, Linlai-Cossor, EH Gold, Psvane and US made WE 300B reissue. started manufacturing the original 300B tube “TA−300B” as a domestic audio vacuum tube in 2010. At the output of the SE amp I have installed resistive voltage divider 12R/1R, and the lower 1R resistor serves as a signal source for Denon 9200 headphones. Jan 18, 2004 · Tung Sol datasheet for 6S4 says 500V max. The output stage is a matched pair of 300B tubes. Oct 12, 2007 · I used Tamura F-5002 transformers in my commercial 300B SE amplifier line - flat out the best of several I have worked with. The transformer is built up from two coils, each consisting of 5 sections. 300B dimensions in mm. This works on mine 300B PP with 2 resistors. TheSvetlana 300B uses ultra-pure carbonized nickel plate material and a proprietary oxide coating on the filament to give Western Electric-like performance. pdf (178412 bytes) Bold designators are close or identical, Italic designators are different ratings, different pinouts or different filament voltages. Of course, it actually has a much wider application, such as a push-pull amplifier's output tube and possibly as a headphone amplifier tube or super-buffed line stage tube. electron Tube Data sheets 3: 300B. The transformer is built up from two coils, each consisting of 3 sections. It is dedicated to be used in audio frequency range which requires the output power 100W. Standard Western Electric DESCRIPTION The 300B is a filamentary Unprecedented High−Precision Vacuum Tubes reincarnated by Japanese Semiconductor Manufacturer. 4 in (6. 9mA current x 450V = 40 Watts). Abstract: 300B triode Vacuum Tube 300B 300b power Triode tube 300b WE 300B 300b Western Electric Western Electric 300b 5300B Text: BELL SYSTEM PRACTICES Transmission Engineering Data Vacuum Tube Data TRIODE POWER AMPLIFIER SECTION A B 4 6 . 300B Datasheet. . 15 The Russian Military 6C33C-B power tube also works great in home stereos. 1 2 3 4 of tubes transplant technologies of producing PSVANE Reproducing Western Economics, it is the mid-priced 300B tube item with great cost performance. P2 is 100r 2w pot Datasheet shows 40mA but most places show 30mA. Made by hand at the Rossville Works manufacturing facility. 300B: 300B. 00 $ 1,699 . Again, these measures were off the 300b tube using the listed rec tubes. 7,082 Results. The JJ Electronics 300B vacuum power tube provides a lush, detailed, and harmonically rich sound. Jun 7, 2021 · (the KT66 datasheet has some notes on spacing). Ltd. If mounted in a hori- Jan 3, 2022 · The one 6N6P tube driver stage provides up to 60V RMS signal and high voltage amplification, that is enough for driving also DHT tubes as 2A3, 300B, 6B4G, 6S4S and similar. Jul 18, 2023 · The circuit in question is the TSE-II SE amplifier with 5842 input tubes and 300B power tubes. The soundstage offers a three dimensional and vibrant realism. Resistors are included for voltage adjustments and current limiting. The power supply provides power to a D3A pentode preamplifier tube and Apr 10, 2022 · 6E6P-E Datasheet. The midrange is where the JJ Electronics 300B power tube truly excels, providing an immersive listening experience that giving life to the music. For me, it's about what combination of tubes I can string together to arrive at a final sound I want. Surely not Russians and Chinese copies. Welcome @ Frank's; electron Tube Data sheets 300B-Western-Electric. We recommend 300B users take extra precautions, such as implementing elastomer-isolated tube sockets, to help minimize or altogether eliminate unwelcome microphonics during operation if used as a gain stage. says 36 Watt maximum dissipation. Part #: 2300BAC. If you own a Balanced Audio Technology VK-55, VK-60, VK-75, or VK-150 amplifier these 6C33 vacuum tubes are exactly what you need. g. From these points of view IMHO C3g is better tube: Last update of this mirror site: 2024-10-28 Electron tube Type: Brand: System: Data sheet. While maintaining the warmth characteristic of the 6H30 design, the Electro Harmonix version introduces a slightly different tonal balance that tends to emphasize clarity and Take your 300b amp and stick a 845 in after the 300b. The KT66 datasheet specifies 8 000 hrs at absolute maximum Pa and IIRC (need to have a look at the datasheet) at something like 60% Pa at least 10 000 hours. " Jan 24, 2019 · The ATM-300R ($16,995 with Electro-Harmonix 300B output tubes, $15,995 without) is the latest incarnation of a design that made its commercial debut in 1999, as the ATM-300—then as now, a single-ended amplifier that uses one 300B directly heated triode per channel to produce 8Wpc. 01 7 FP 1999. 2 KB · Views: 68 S. These Apr 28, 2015 · The circuit that I decided to follow for my 300B triode amplifier I found on this site, the 300B Single-Ended (SE) tube amplifier schematic with direct coupled 6SN7 input stage. The windings are arranged to minimize destructive Jun 15, 2024 · The Western Electric 1950 Data sheet. The OPT was a cheap 5K Edcor XSE. GE datasheet for 6S4A says 550V max. The document summarizes the design and performance of a DIY audio amplifier called the "Fatboy" 300B push-pull amp. wev zsivsfb uzcfs fhnnu wqrmwug mwafuuy mkzjqom imbf fibtl kitb