Ecc803s tube data booklet

Rated for a lifespan of 10,000 hours, these tubes have beat the pants off our nos new old stock input tubes. I tested this ecc803s upon arrival and it tested at 83% on triode 1 and 87% on triode 2. This twostage audio preamplifier is intended for use with highfidelity magnetic phonograph pickups. The good thing of the telefunken is the very high lifetime expectation, lowest hum and lowest noise. The e182cc was designed with both an antimicrophonic construction and with two matched triodes within the envelope. I think the ecc803s is actually a lot like the svetlana winged c 12ax7 that i currently use in v3. The 6n24p double triode is designed for amplification of highfrequency voltage in cascade circuits of radio equipment of wide use. Tfk ecc803s has lowest noise, lowest microphonics, at high gain, and out of the box comes as specified in the data sheet a balanced and. This tube is an excellent choice for any guitar amp and perfect for studio and hifi. It utilizes a medium length ribbed plate design that is much like the old amperex and brimar european designs.

Use of the data booklet may be appropriate for some questions. Eat cool damper for audio valves the newest assault on tube microvibration. Imo the ecc83s is by far more midrangy than the fairly balanced sounding and much sweeter ecc803s. Only those valves in current production, with full or half page data are listed. This is a suitable replacement for any 6sn7gt 6sn7gta 6sn7gtb ecc32 dual triode tube type. I have the complete manual and it has two supplemental tube data listings but i still dont have testing data for all common tubes today i discovered i dont have testing data for a 7h7. Vacuum tube ecc803 12ax7, jj electronics, long plate. Jj has used long 17mm plate design used in the 1950s by mullard with a longer fin to improve heat dissipation. Valves still in production or stock for revalving are not listed here. I believe i sent you an early model no later than the mid1960s, which originally came in the blue and red boxes. Eat ecc803s 12ax7 tubes matched pair tubes audiogon. The ecc803s tubes, i dont recall which pair i selected.

The jan chs 6sn7w metal base tube was made from 19421945. Im planning to replace the ecc83s in v2 with the gt tube as well. Also known as the groove tubes ecc83s and ruby 12ax7acz hg. Tube longplate ecc83 in tradition of the legendary ecc803s, fine resolution, for hifi thomann uses cookies to give you the best shopping experience. With almost datasheets and the visitor counter indicates over 4000. This tube is an excellent choice for any guitar amp and perfect for studio and hifi equipment as well. As you indicate, it is a different tube than the 12ax7 more than fancy gold pins, the ecc803s has a different grid construction.

Eat ecc803s 12ax7 with cool damper eat ecc803s 12ax7. Yes, eat tubes are expensive but worth every penny. We are releasing only one 1 single tube from the tube museum for one lucky audiophile to enjoy. As a result of this selective process, all ecc803ss are matched to very similar specifications. To my ears it sounded the best in v2, while i was plugged straight into bright 1, volume on 4. Ecc803s tungsol tube ecc803s pin tube gold 2pcs 12ax7.

Telefunken ecc803s 12ax7 tubes steve hoffman music forums. Warm in character with lots detail, this tube is perfect for any hifi or musical instrument amp out there. Given the gain, it is generally very low noise and microphonics. It retains all of the definition and detail that the ecc83s short plate and the ecc803s long plate tubes have but it has slightly less gain than the ecc83s. British cv1988 6sn7gt one of the best quality 6sn7gt tubes available.

For the rest, this tube is pretty much average with the data. Description the 6f5p triodepentode is designed for operation in vertical sweep units of widely used television receivers. Ecc83 high performance highmu twin triode, tube amp doctor. This is the hickok tube tester set up for western electric tubes. New unused in box, matched pair eat cool valve ecc803s 12ax7 ultra premium vacuum tube the cool valve ecc 803s is the finest twin triode with separate cathodes available in todays market.

The jjtesla ecc803s is a warm sounding large long anode plate designed ecc83. These features made them especially suited for differential amplifiers in such instrumentation as pen recorders and bridge circuits. This datasheet shows the way an ideal tube would bias. Just wondering if there are people using this tube in their preamp. At the bottom of this page youll find some links to other tube datasheet sites in case you cant find what youre looking. A c2h4 b h2s c ncl 3 d sf6 2 the mass spectrum of a sample of lithium shows that it contains two isotopes, 6li and 7li. The metal base sylvania 6sn7w is regarded as the best sounding usa made 6sn7 variant of all times. Noval u f 6,3 or 12,6 v i f 800 or 400 ma typical characteristic. For more constant parameters, the tfk ecc80s is the tube, since ecc803s is defines as having maximum 15% deviation. Eirc electronic tubes factory data sheet ecc8112at7 page 1 of 4 telephone.

The tungsol ecc803s is a low noise version of the standard tungsol 12ax7. This is a suitable replacement for any 12au7 tube type. I believe it covers all the valves mullard made for domestic receivers between 1925 and 1937. First we start with this standard data, from the muiderkirng book. Siemens e83cc ecc803s 12ax7 triplemica tube museum.

Ecc803s telefunken gold pins dual triode tube world. These amazing military spec tubes, various brandings, are known for their amazing soundstage, extended dynamic range, and attention to detail. The valve features gold plated grid, top getter and a spiral filament to reduce hum and noise. Youll occasionally see the military designation imprinted on the ecc803s tubes as well. Ecc803s rare goldpins made by telefunken of western germany diamond bottom ecc803s tubes are extinct. Eat cool valve ecc803s aka 12ax7 shop music direct. The jj electronic ecc803 is a high performance, long plate version of the ecc83 12ax7. Best signal tube combination for vintage mc275 steve. It didnt sound as good in v1 with me plugged into normal 1 nor did it sound as good in v 2 while i was using my ycable and plugged into normal 1 and bright 1. The cool valve tubes include the eat tube dampers for dissipating vibration, as well. Just goes to show how tubes give different results in different amps.

The ecc801s and ecc802s, which are upgrade substitutes for 12at7 and 12au7 respectively, dont have the gold pins by the way. This tube is definitely what you need if youre looking to slightly kill the harshness in the higher frequencies and expand the dynamic range of your amp at. The honeywell pen recorders used the e182cc for optimum performance. Most of the datasheets are in pdf format and some are links to other html pages. A very long plate 12ax7 offering from jj and once again its a beautiful sounding tube. The jj ecc83 has darker sound characteristics and great for metal and hard rock. Tungsol gold 12ax7 ecc803s, matched quad by unknown. Ecc35cv5696sl7gt mullard 1950 1960s this 6sl7gt sub sounds superior to any us made 6sl7gt. The tubedepot site claims that it has a better basslow mid response compared with the shorter plate designs.

This is the amalgamated data from three mullard data books from the late 20s to late 30s. Does anyone have a source for obsolete tube data for this tester. We really like it for microphone preamp effects applications. Tungsol gold 12ax7 ecc803s, matched trio by unknown. Ecc8112at7 page 1 of 4 franks electron tube data sheets. Eat ecc803s 12ax7 with cool damper eat ecc803s 12ax7 with cool damper great tubes, great sound. Consequently, i own a calibrated mutual conductance tube tester for identifying tube issues in my amps as well as to save money by not throwing away perfectly good tubes just because theyve been used for a while. The circuit is from the rca tube receiving manual and meant for. Page 1 page 2 page 3 page 4 page 5 table of contents page 6 page 7 page 8 page 9 page 10 page 11 page 12 page page 14 page 15 page 16 page 17 overview page 18 page 19 general conventions page 20 typical dataflow sequence page 21 page 22 page 23 control code command functions page 24 page 25 immediate command functions page 26. My understanding is these tubes were manufactured from the late 1950s mid 1970s. Vacuum tube ecc803 12ax7, jj electronics, long plate a high. Discussion in amps and cabs bg started by paganjack, dec 3, 2008.