These tubes have a totally different pinout than the 9a or 8aj tube basing, so they are not simple dropin replacements. We carry brands like western electric, mullard, telefunken, sovtek, jj, electroharmonix, genalex and tungsol. From the same authors as the award winning pdf xchange product line developer sdk available. Prior to starting ram tube works and music reference in 1980, he opened a highend retail store where. Sep 19, 2016 djvu viewer, reader is an app which is designed specifically to open and view the contents of djvu files directly in your browser. 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 tubes in the cd player only have about 10 hrs on them, but the sound isnt nearly as warm as it was before replacing the stock tubes. All our tubes are guaranteed for 3 months from the date of purchase. The following formula illustrates why this tube is so good on noise. Best of the amperex 6dj86922 tubes audiogon discussion forum. Free all you will ever need to view adobe pdf files, export pdf pages and files to image formats, type on pdf pages and much much more. Versions of the tube are named ecc88, e88cc, 6922, 6n23p, and 6n11. The suitability of the 6dj8 for audio tube audio store.
Since the 6dj8 sections will each be drawing about 12ma, the two of them together should draw around 24 to 25ma. Genalex gold lion e88cc 6922 datasheet pdf download adobe acrobat pdf reader. This tube was also widely used in tektronix oscilloscopes and other. The design is almost the same as the 12ax7 preamp, it is a single gain stage triode tube with cathode follower. The electroharmonix 6922eh tube is a brand new preamp. The 6dj8 is a frame grid sharp cutoff twin dual triode with separate cathodes originally intended for use as a cascode circuits, rf and if amplifiers, mixer and phase inverter stages. One triode stands on top of another, while sharing a common current path.
Tracker software products pdftools version history. The 6n1p tube is equivalent to the chinese 6n1 tube. Most of these datasheets are in english except where noted otherwise. Premium 7dj8 tubes 7dj8 tubes will work great in most amps and preamps that use the 6dj8. Its packed with all the tools you need to convert, edit, and sign pdfs. E83f philips 6689 long life, 0 hours, low noise pentode golden pins the e83f was used in telefunken v76 microphone preamp and many german studio amplifiers. The ecc88 6dj8 could possibly sound better than any commercial longlife tube. These specifications are provided asis, with no warranty of any kind. It has been years since i had to source parts, and never audio grade. After finished my simple 12ax7 tube preamp, i decided to try other medium mu tubes, including the 12au7 and also this 6922. First of all, it is the same tube as the 6dj8, and will work wherever a 6dj8 is needed. They often made 6dj8 tubes for other labels, like rca, zenith, and other usa brands. This is the set up per tube manufacturer data sheets.
As of 2012, 6dj8 tubes are still manufactured and used and new old stock nos 6dj8s can also be obtained easily. The 5670 2c51 we396a is also a good alternative, also the gm and rp are different than 6dj8 6922 ecc88, but they are a better choice than the rf tubes. Tube 6dj8 or rohre 6dj8 id4763, double triode, noval, b9a and shown. All the basic features how to use microsoft edge as a pdf reader in the windows 10 fall creators update microsoft edge now includes all the essential features needed to replace your thirdparty. Nos tube specification sheet nos tube specification sheet. Review of the cascodes operation the cascode is a compound amplifier. Be aware that the tube makers control the mu more tightly than the gm and rp, so dont rely too heavily on the gm. If you push a 6dj8 to 10 or 15ma, the result is a gm of 12,000 or so.
My favorite tubes and their substitutes by robert h. Looking through the list, i didnt see a model for the 6dj86922 or the 6n1p. Heres my problem, when i test tubes like 6sn7s, 5965s, 6fq7s even 6550s or 7591s, the readings appear normal, even on both sections of the double triodes but when i test 6dj8 s and 6922 or even the russian equivalent 6h23p. View full pdf xchange pdf viewer page description download mirrors for pdfxvwer. I called the guy who sold it to me and he says that it has sovet6922 or called 6dj8. Well made vintage versions of this tube are quite low noise and can be found in many tube preamplifiers, phono preamps, and headphone amplifiers. See my pdf viwer for a better control and files selection blog in powerapps community blog. Most of the datasheets are in pdf format and some are links to other html pages. Its been my experience that the 6dj8 s and the common variants sonic character changes much more drastically as operating points change than other audio small signal tubes. The electroharmonix 6922eh tube is a brand new preamp tube that is made in russia. Can you guys look it over and let me know if i am on the right track.
Tube possible substitute western substitute ec86 6s3p, 6s4p 6cm4 ec88 6s4p 6dl4 e80cc 6n1p, 6n3p ecc82 6n1p, 6n5p 12au7 ecc83 6n2p ecc803, 6l, 12ax7 ecc85 6n3p 6l12, 6aq8 ecc189 6n23p 6es8 ecc802s 6n1p ev, 6n5p ecc82, 12au7wa, 6067 ecc803s 6n2p ev ecc83, 12ax7wa, 6057 ecc960 6n3p, 6n15p e90cc. Pdf reader apk helps you reading books,reading pdf,reading pdf files,reading at night,get magazines,reading comics. I have a carver c19 pre and sda490t cd, both use 6dj8 tubes. The 6922 6dj8 tube type is equivalent to the european ecc88 e88cc tube and can be used in any 6922, 6dj8. It is distinguished by its very high transconductance, mostly the result of its frame grid construction. Anyway, i have a question regarding the ccs used, and the sum of the current draws. Although the gec 6dj8 has proved to be one of the best such tube in the world, i would like to warn any person who is looking to buy this tube as there are more than 6 types of gec 6dj8 6922 that i have seen and that are all different. Preamp tubes 6922 6dj8 7308 pcc88 tube basics and faq. All these links open in a new browser window so that you can return quickly to this page without having to reload. I love and appreciate tube based audio gear and own sixteen pieces of tube gear between my two reference systems. And i was well on my way into collecting tubes and figuring out how they sounded, why, and who really made them.
The 300b is an unusual singleended tube amp with 300b power tubes. Most have gold plated pins, but many sylvania manufactured 6922s have steel pins a few sylvanias are gold pin. The input stage also relies on two paralleled triodes ecc88, which drive the 300bs through a stepup transformer. Click this button to get the free adobe acrobat reader. This means that with the 100 ohm resistor from cathode to ground, the voltage at the cathodes will be in the vicinity of 2.
The amp uses two tubes in parallel, which makes it easy to produce 30 watts of clean and wonderful singleended 300b power. Read a pdf with adobe readers read out loud youtube. They are low voltage and low impedance, used for wideband amplification in the oscilloscope but originally designed for vhf front ends where they were designed to operate as a cascode amplifier just as the earlier pcc84. Due to high conductance requirements, 6dj8 6922 type tubes require special construction called frame grid. View pdf brochure for e88cc 6922 6dj8 jj electronics. For example, 6gc7 for the input tube and a 6h30 for the output tube can be used, although.
I wasnt aware these existed and theres no mention of them on joes tube lore although im not saying this is the definitive list. The top triode strives both to shield the input grid from the top triodes miller effect and to preserve the transconductance of the bottom triode. Vacuum tube 6dj8 ecc88, dual triode antique electronic supply. Here youll find a modest collection of datasheets for some popular tubes. Provisions for input switching and recording are shown and can be adapted to meet your needs. With acrobat reader dc, you can do more than just open and view pdf files. A perfect tube with no excess or 1f noise has a minimum grid noise resistance of rn 2. How to use microsoft edge as a pdf reader in the windows. This is one of two premium versions of the 6dj8 tube. Work on documents anywhere using the acrobat reader mobile app. This tube now replaces the sovtek 6922 which is no longer available. I went down to an old parts store called dow on holt blvd, in a crappy area of montclair, california. Its easy to add annotations to documents using a complete set of commenting tools.
Tube 6bj8 or rohre 6bj8 id4653, double diodetriode, noval, b9a and shown. The 6dj8 is a miniature ninepin medium gain dual triode vacuum tube. Features include very low distortion, medium transconductance, higher platevoltage and dissipation rating than 6dj8 types, and larger cathode than 6dj8 types. The jj e88cc tube is a great alternative to ecc88, 6922 and 6dj8 s for preamplifiers if you are looking for a warmer, smoother sound at a low price. Phillips 6dj8 phillips manufactured tubes with reverse triangle factory code. Unbeatable prices on thousands of guaranteed vacuum tubes for sale, vintage nos hifi audio tubes, radio tubes, ham and industrial ready to ship. This would be well away from the lm317s dropout voltage limit. A all round great performing preamp tubes used in both hifi systems and guitar amps. I have never opened the case on my ar sp9 mkiii preamp. Use of these parameters shall be entirely at the users own risk. If not, please consult the user manual for ltspice. The 5687 has about half the gain of the 6dj8, and requires a higher plate current about 10ma per triode. Heres a backstory to this tube back in the 80s i had an audio research preamp that used 6922s or 6dj8 s.
The 6dj8 and its variants are used extensively in many tektronix instruments of the tube era. Due to high conductance requirements, 6dj8 6922 type tubes. If you need ebook reader,epub reader,ereader app,offline dictionary,chm reader, pdf reader apk is the best reading experience,user friendly,customization options, pdf viewer,configuration options. This russian 6h23p is the standard version non eb of the the 6922 or 6dj8 tube and is also the equivalent to the european ecc88 e88cc tube. But in terms of performance, it comes at the bottom of this group. The 6dj8 is a twin triode in a small 9pin miniature glass package, with a very high transconductance for each triode unit. They have several seams molded into the top of the tube. Both units were recently serviced and had sovtek tubes installed. Jan 11, 2018 this is to show how powerapps can easily display pdf file linked to an url with improved features. Once they moved up to the 6922 tube and beyond to the 7308 tube i was under the impression the tubes were all gold pins. Diy audio projects forum 6dj8 ecc88 tube headphone amp.
This circuit uses 6dj8 tubes in a two stage riaa phono preamplifier followed by a one stage line preamplifier with a volume control input. You can use acrobat for viewing and printing pdf files. Pdf reader for pc windows 7, 8, 10, xp free download. However we find they cause hum when used in yaqin tube amps. I went down to an old parts store called dow on holt blvd, in a crappy area of montclair, californ.
The e88cc tube type is equivalent to the north american 6922 6dj8 tube and can be used in any 6922, 6dj8 or e88ccecc88 circuit. The 6dj8 is a frame grid double triode of miniature construction with high. Tube testing equipment why we dont sell certain brands filter by all 12at7 ecc81 6201 cv4024 12au7 ecc82 cv4003 5814 12ax7 ecc83 cv4004 5751 6922 6dj8 7308 pcc88 6sl7 5691 cv1985 6n9 6sn7 5692 cv1988 6n8 hide price misc. The design is ruggedly constructed and the 6dj8 is the american designation. For these we suggest you upgrade to a different 6922 tube type. I found that changing tube brands changed the characteristic sound of the 6dj8 circuit as well also much more noticable than most other tube types.
The 6dj8 is well regarded in the tube audio community, leading to exaggerated prices and occasional cannibalism of classic tek gear. I was wondering if anyone could recommend the best brand i. The vtsp360 has a proprietary one of a kind tube bias servo circuit that optimizes the performace of many different tube configurations that are equivalent to the 6dj8 type dual triode vacuum tubes. However there is an important difference, a 1k stopper resistor is added at each grid input. The herron audio vtsp360 uses four type 6922, or 6dj8, or e88cc, or 7308 dual triode vacuum tubes. We carry everything from nos rca 6l6gc black plates to jj 12ax7s.