833 tube amplifier Trying to describe the sound is not easy, but "effortless" is a nice start. S / N > 95dB . e. Input selections RCA single-ended ; balanced / XLR. The envelope is fabricated from hard glass intended specifically for the high-temperature operation of transmitting tubes. I m agree with you. I would estimate a cost of building an 833 amp like this at 2000$ depending on tube rectification or solid state rectification a far cry from some 70000$ for the Wavac for a taste of 833 magic! I also might add if just an 833 had it its filament supply and its B+ with an output transformer one could drive an 833 off a 16 ohm tap with 10 watts – 2 Power Stages (Power stage with an 833 tube): the 833 tube drives the Single-ended Class-A circuit + High quality toroidal transformer + Carefully power source designed with a huge choke and an 20 oil capacitors + Filter selection switch (Yes or No) * Highlighted features of Ampli 833 Anniversary for distinctive sound: – 130W/ch Use every caution if you want to build an amp using this high voltage. The best 833A ever made with special alloy plate structure. We do not have introduction data for the A variant as yet. Member. Not many amp schematics out there for an HF amp using 833A's or their heavier version the 833C. The most prized of these tubes put out only a watt or two and sound spectacularly musical through a high efficiency speaker. Funny: a huge tube, a massive power supply, half a truckload of components. Feb 28, 2008 · Today I had in my hot little hands a 833 tube . Tube complement tECC88 or KT120, KT150 as the drivers, KT88 as the amplifiers . Refer to the photo below, block A,,,,thinking of using ccs,,,40H choke or ccs 2a3 set at 40mA for ,,,4p1s set at 25mA,,,or maybe a pure resistor?And I have issues when using SMPS at heater supply cause buzz sound . voltage vs. Dec 18, 2003 · It started all with Protos asking for 833-amps and now it seems there are serious plans and even builded amplifiers with this tube ! NickC: your right about the open structure of the tube socket. The filament current of 833 tube is very high up to 10A so the tube spreads an extremely high heat which can easily make noise for the amps. Mar 31, 2012 · "The AM Music 833M does not run at the excessively high voltages of some other Super Amps, but there is 900V present at the top caps, when the amplifier is switched on. and the sound is . This tube can be used interchangeably with the 833A/C type electron tube produced in the United States. " My question is how do they get 120W from a single 833C tube at 900V? All the schematics I have seen of similar high power amplifiers using the 833 run at more than 1400V. 6 KB · Views: 9,670 Tubelab_com. 2017年5月29日 - 在 Pinterest 上探索 Siu Kay To 的图板“833 tube Amplifier”。。查看更多关于 技术, 太空时代, 感受 主题的点子。 Tube 833A or Röhre 833A ID17021, Transmitting Triode, air cooled, SPECIAL TUBEBASE in general and Power/Output shown. Only a few lucky audiophiles have pockets deep enough to afford them, and given the amp's distinctive personality, associated components must be chosen with great care. Think of a 1. The two mirror-imaged chassis, with their satiny finishes and curved glass shields inspire lust. I was thinking, building a very good set amp with a 300B and in place of a OPT, using an interstage trafo to drive the 833A, I was thinking of using the 300BXLS (powered at 472V and 120mA), drived by a µ-stage of D3A penthode and 27 triode (Attilla from Triode Dick) and in place of a beefy OPT, using The Sun 833 SE is Thivan Labs' Flagship amplifier. It is one and a half years in Jul 10, 2004 · The stacks look impressive, in an industrial sort of way—except for the main attraction, the tube-bearing SH-833 itself. It took less than $2000 in parts to build the final design after testing several different coupling transformers and capacitor and parallel feeds. See full list on tubelab. The FU33 electron tube is a direct-heating thorium carbide cathode glass triode, the anode cooling method is natural cooling, the maximum anode dissipation power is 350W, the maximum operating frequency is 30MHz, and the output power is 1000W. A separation of the large power transformers from the driver block is the most optimal solution applied to avoid noise for the Driver stage. Free 807 Tube; 833 C; 3 8 Tubing; 845 Tube -Amplifier This is used to compensate for tube variations. This turns out to solve a lot of problems that have been present in vacuum tube amplifiers forever. The 833A is a vacuum tube constructed for medium power oscillator or class B or C amplifier applications. 833 amp supplies 1. But when everything is right, the Wavac SH-833 will produce magical, musically fulfilling sound that you're not likely to forget. 395. In fact this amp sounded better than any 845 amp that I have builded so far ( I still have to build another 845 PSE using CU5KB and 3033 to compare with). 7's. They take a lot of drive for full output however. . RCA gave tentative data for the 833 in 1938. I recently intended to build a 833 SET 75watts amp but, it will give me sound in only A2 mode. Input Impedance 100k ohms. 300b,,,211 and 845 with 1850v HT recently interested of 833 sebut have some issues. This allows the bias on the 5842 to be adjusted to put the tube in the most linear portion of its curves. 0Vrms. The plate is rigid with less elasticity, does not like other metal plates it will only be broken rather than deformed. The internal tube parts are supported by low loss ceramic Single-Ended-833-Tube-Amplifier-Monoblock. Input selections: RCA single-ended ; balanced / XLR: Power Output : 120w each channel : Load impedance: 4 & 8 ohms: Power consumption: 400W(each The SH-833 is absurdly expensive. current curves), even though the 833 and the 572b are true DHT triodes. Frequency response 20Hz-100KHz. Feb 15, 2020 · I tested this amplifier on a pair of OB7 speakers and my 833-A design sounded better than any bi-amp or try-amp with 45's on the tweeters and midranges and the 833-A's on the woofers I tested. Vacuum tube FU33 is a high-power triode, usually Power Tube 833: Tube complements: ECC88 as voltage amplifier;KT88,KT120 or KT150 as the drivers: Frequencye response: 20Hz-100KHz: Input Impedance: 100k ohms: Input sensitivity: 1. They both are high gain, which means they have 'pentode' type curves rather than the typical triode curves (i. jpg. Very good sound quality! + The 833 power blocks operate at a voltage of over 1000V. Mar 21, 2013 · WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES. "light" "airy". It is a massive 3-block amplifier coming in at a combined total weight of 320 lbs ! It is comprised of an Input-Driver chassis block that houses the pre-stage and the driver stage for the 833 tube. The long grid and anode leads, plus high internal capacitance, limits this tube to 15-30 MHz maximum frequency. It is rather exposed. Power consumption 400W(each) Power supply Get the best deals on 833 tube when you shop the largest online selection at eBay. Aug 31, 2019 · I have completed and perfected my magnum opus, an 833-A single ended triode amplifier which drives a pair of Magnepan 0. It means that, i will have more power but less sound quality (i don't know how is the sound of Class A2 but anyway) when compared with GM70 A1 - i am not acceptable this- Due to this reason, i changed the mind about 833 tube amp project. com Sep 21, 2004 · The first is the powerline for filaments 6SN7/300B, the second is the powerline for B+ 6SN7/300B, third is the filament 833 and the fourth B+ 833. Input sensitivity 1. Improved 833: thoriated-tungsten filament A1 A2 Hi Geek, Thank you. jpg: Album name: Vacuum Tube (Valve) Audio Projects: Filesize: 36 KiB: Date added: Jun 04, 2009: Dimensions: 640 x 480 pixels: Jan 24, 2015 · The 833 has some similarities to the 572b transmitting triode in my smaller Wavac. 5 litre glass beaker . It is a medium-mu power triode with 300 watts CCS or 350 watts ICAS anode dissipation. 833. S / N > 98dB . Mounting requires care but can be horizontal or vertical. May 25, 2008 · Anything that will supply 2500 volts would be good for a power supply. intended for use in RF amplifier, oscillator, or class B modulator service. Power Output 130w. They are not a great choice for HF but since you only want 160/80/40m you should be OK. Dec 18, 2003 · 833 amp does work Just finished my 833-amp. At maximum power the anode will glow an orange-red colour. Oct 22, 2023 · Start from pp amplifier to single ended. It is pretty straightforward but i did not want to use relais for they are prone to "stick". Who should walk through the door moondog sniffing out tubes :biggrin: 150 watts of SET power is like 600watts of try hard Solid State who needs eco friendly low power consuption amps bring on 3kv of power supplies Title: 833A Author: RCA Subject: FP-2000-10-07 Created Date: 10/7/2000 8:23:16 PM. com. The major improvement is the addition of the MOSFET at the grid of the output tube. RCA 833A filament supply 10V 10A, Vp 3000V, Pd 1500W. It can work normally under red hot plate condition. Joined 2005 The 833A is rated for service as a modulator and audio amplifier and a pair in class B can generate up to 2,700 watts. After a serious breaking-in and listening time i am pretty pleased with the result (personal opinion of course). Oct 7, 2018 · I have some schematic's from Lancroft Audio, but they are not so perfect like i would want. The 833-A Stereo Amplifier: When I first began building single ended triode amplifiers the vacuum tubes of choice were the 300-B, the 2A3, and the 45. The Svetlana 833A features rugged construction for high power RF transmitter applications. This amp sounded much better than the 845SE (Tamura 2013 output) and 845PP (Tamura 2012 output). Load impedance 4 & 8 ohms. xfktzjdentrlnnfimxylltnpdvrktuypfwmfppqctgcuecbvlyhcanrcxuhavwinmafd