Does any member here has any schematic using 6as7 as power tube and 6sn7 as driver tube. The svetlana 6as7 has an indirectlyheated unipotential. Overview thank you for choosing a woo audio product. The svetlana 6as7a was originally designed as a series pass tube in regulated power supplies. Tube headphone amplifier schematic my diy 6as7 otl tube headphone amp. I recently came into a bunch of 6080 and 6as7 tubes, and so began hunting online for a low powered 6as7 based set amp.
Audio engineers and designers have been trying to build otl amplifiers since the. This is a list of vacuum tubes or thermionic valves, and lowpressure gasfilled tubes. Find microphone preamplifier related suppliers, manufacturers, products and specifications on globalspec a trusted source of microphone preamplifier information. 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 highvoltage supply. These audio mirror 6as7 pse monoblocks have been my true workhorses for more than four years now 2010 and are likely to stay so for years to come.
This is our collection of diy and hifi audio schematics. The drive circuitry of the control grids is not shown i assume perfect. If you have built any of these circuits, we would love to hear from you so send us your comments. As always, i like highcurrent drivers because they absolutely kill miller. Hello i have some 6as7 and 6sn7 tube not being used and would like to build my first headphone amp. Changing the coupling caps improved transparency considerably and with the mods shown below, these monoblocks are serious contenders to my 300b set amp and i use them all the time for my dtqwt. Actually, we can add to this list the 6080 and 6082, which are industrial versions of the 6as7, with the 6082 holding a 26. In spite of their small size, they pump out good volume with efficient speakers. Lilliput 6as76080 single ended triode rca 6sl7gt driver 6as76080 outputs. Eimac power grid tubes quick reference catalog 175 pdf. Because it is not easy to design a good otl circuit. The 6as7g is a stcoke bottle glass type, whereas the 6080 is straight bottle. Audio mirror 6as7 pse 20 wpc monoblocks troels gravesen. As of 3505, i have finished scanning the general section, receiving tubes part 1, receiving tubes part 2, miscellaneous, specialpurpose receivingtype tubes, thyratron, ignitron, and glowdischarge tubes, and most of the transmitting tubes, as well as all.
Jun 06, 2009 there is also the 5998 tube, made only by tungsol regardless of branding, which does have different operating characteristics, and may or may not work in any given 6as7g application, although it does in the amps i have, snd sounds a little better than most 6as7gs. Audio engineers and designers have been trying to build otl amplifiers since the 1950s, but they met with only limited success. Lowmu preamp from audioxpress 204 this is a preamp i designed using a lowmu power triode 7236, 5998, 6as7, etc. The heater may be dc operated for the absolute best humnoise performance. Svetlana 6as7 dual power triode for high performance audio applications he svetlana 6as7 is a glass envelope, dual power triode with high transconductance and high plate current capacity. It is intended for low distortion audio frequency power amplification service in either single or pushpullparallel tube, 96 svetlana 6as7 svetlana 6as7 filament 6. Each triode has a plate dissipation rating of watts with convection cooling. 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. The 6336a tube is intended for power supply use and contains two. Please see the substitutes at the top of the page for more details.
I recommend that if you dont already have it you download the latest version of adobe reader. Scribd is the worlds largest social reading and publishing site. The power supply is calculated for either single or two tube operation that is, 6as7 power rating is never exceeded even when the other 6as7 tube is pulled off and or all the tubes of the other channel are missing. Pointtopoint wiring one 6as7 6080 pdf power tube two 6922 6dj8 pdf drive tubes one rca input one preamplifier output 14 6. Tube 6as7g or rohre 6as7g id4588, double triode, octal int. Us2548235a us734489a us73448947a us2548235a us 2548235 a us2548235 a us 2548235a us 734489 a us734489 a us 734489a us 73448947 a us73448947 a us 73448947a us 2548235 a us2548235 a us 2548235a authority us united states prior art keywords tube voice coil output speaker connected prior art date 194703 legal status the legal status is an assumption and is not a legal. This one has a lot of pages from the european philips tube manual. Thanks to audioxpress and ed dell, the full magazine article is now available for download. The 6as7g tube is also a nice choice for many otl headphone amps such as the woo audio 2, 3, and 22 models. This is a preamp i designed using a lowmu power triode 7236, 5998, 6as7, etc. The 6as7 g tube is also a nice choice for many otl headphone amps such as the woo audio 2, 3, and 22 models. The wa3 is finely handcrafted amplifier that delivers uncompromised performance and superior listening experience. Figure 1 shows several pushpull tube amplifiers only the power tubes and the output transformers primary winding. Apr 26, 2015 1967 shelby gt500 barn find and appraisal that buyer uses to pay widow price revealed duration.
Does any member here has any schematic using 6as7 as. Find 6as7 tube amplifiers related suppliers, manufacturers, products and specifications on globalspec a trusted source of 6as7 tube amplifiers information. The svetlana 6as7 is a glass envelope, dual power triode with high transconductance and high plate current capacity. They are reliable and have never caused me trouble. Dec 14, 2009 hello i have some 6as7 and 6sn7 tube not being used and would like to build my first headphone amp. Lilliput 6as76080 single ended triode tube audio lab. Some files have compressed images that may not work correctly with older versions of acrobat reader. Ges popular 1973 tube manual refers to the 6bq5 as a beam. I am working on scanning and placing on this page the entire rca hb3 tube manual.
The 6as7g tube is best known for being the tube used in atmasphere otl tube amplifiers. It is intended for low distortion audio frequency power amplification service in either single or pushpullparallel tube applications. Feel free to send us your hifi audio schematics and we will add them here. Chatham 6as7g is a lowmu, high perveance, twin power triode of the heatercathode type intended for use as a regulator tube in dc power supply units. The music amplifier ma3 uses 42 6as7 tubes per channel. The svetlana 6as7 has an indirectlyheated unipotential cathode. I stumbled onto a build log of an bottlehead otl crack headphone amplifier. Among the highmu tubes, my fave 417a is probably a bit pricey these days i havent looked in a long time since i was lucky to get.
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