Barczynski, who offered me a lot of diskspace online, i can put all my datasheets on the web. The thin glass tube envelope is 20 mm in diameter and, excluding the b9a base pins, is 46 mm tall. The two independent valves are screened by a rectangular plate across the diameter of the envelope. My favourites are still the telefunken types and the large plate philips and siemens types from the 50s. Hello all, my school is moving and i was helping my physics teacher, he gave me some things, and today while cleaning a cabinet, i saw a nice little box, then i realized they are tubes, he told me to throw them at the garbage, i took them, 2 nice ecc85 tubes or as they are named in america 6aq8 fabricated by rft, are these tubes usable in radio receivers. If you need more info drop me a note offforum, ill be happy to help. Oct 04, 2010 this tube has no known direct replacement.
Unmarked tube rca ecc85 6aq8 jan phillips 5814a 12au7. You can use acrobat for viewing and printing pdf files. Each wound string is precision wrapped with round nickelplated steel onto a high carbon, hexagonshaped steel core. Our new ehx strings electroharmonix electric guitar strings are customdesigned to our specifications and made in the usa by a premiere string manufacturer. Excellent in citation iii and iiix tuners, musical fidelity xcans, etc. Test data for hickok 539b and 539c tube testers author. Sep 11, 2014 my personal experience is with the chinese dared mp5 amplifiers which come with 6n1 in the preamp. However if you are experienced, and with the proper tools, it could be replaced given socket rewiring and maybe some circuit tweaks with 5687, 12bh7, ecc99 or e182cc. The ecc85 is the definitive double triode for the front end stages of fm radio receivers.
Tube museum quality nos nib ovp quality tested 100% nos 1960s bwb falcon telefunken diamond ecc85 6aq8. Both produce very transparent sound with great air, but in area of musicality copper rod version wins again. One triode would be used as an rf amplifier and the other as the local oscillator. The el84 tube may have failed the gas test, meaning it did not have a pure vacuum due to high usage. Mullard master valve guide 193334 this interesting booklet gives detailed by early 1930s standards data on the mullard range of radio valves. The second section of the table lists usa types sorted in numerical and alphabetical order with usa type designations still in. The plain strings are made from the same high carbon steel as the hex cores. Unmarked tube rca ecc856aq8 jan phillips 5814a 12au7. The el84 6bq5 was the only tube it had data for on the scroll chart.
My personal experience is with the chinese dared mp5 amplifiers which come with 6n1 in the preamp. The fact that it is e80cc rather than ecc80 means it is a better quality tube usually, but not always. Apr 28, 2012 the russian 6n1pev is a nice tube, good sounding and quite inexpensive too. The thin glass tube envelope is 21 mm in diameter and, excluding the b9a base pins, is 47 mm tall. The 6f5p triodepentodes are miniature devices enclosed in glass bulb and provided with ninepin base leads and an indirectly heated oxidecoated cathode. Ecc85 datasheet double triode, pdf, pinout, equivalent, replacement, schematic, manual, data. Ecc85 datasheet, ecc85 pdf, ecc85 data sheet, ecc85 manual, ecc85 pdf, ecc85, datenblatt, electronics ecc85, alldatasheet, free, datasheet, datasheets, data sheet. 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. Tube depot carries a selection of 6aq8 ecc85 pre amp vacuum tubes. Telefunken, valvo and philips in 80s when west european tube plants were. I locked up the tube data and found 6922 may be ok to. 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. Ive replaced quite a few with nos ecc85 and never had issues.
Tube ecc 865 or rohre ecc865 id20210, double triode, noval, b9a and rfifstage shown. The higher the transconductance, the lower the output impedance. Ecc85 datasheet, cross reference, circuit and application notes in pdf format. Assorted nos 6aq8 ecc85 highmu radio frequency double triodes intended for use as r.
Safe tube replacements chart along with recommendations. Nov 07, 2012 the copper rod version is by far a better tube. 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. The russian 6n1pev is a nice tube, good sounding and quite inexpensive too. Direct replacement for the 6n1 driver tube, posted on may 4, 2012 at 09. Ecc35cv5696sl7gt mullard 1950 1960s this 6sl7gt sub sounds superior to any us made 6sl7gt.
Copper rod version is definitely one of the best ecc85 tubes that ive listened to. Assorted nos 6aq8ecc85 highmu radio frequency double triodes intended for use as r. Telefunken nos 6aq8 ecc85 highmu radio frequency double triodes intended for use as r. The owner told me that the socket next to the power tube is the phase inverter and you should use a 12at7. Eastern europe made pre amp compatible tubes from tungsram and other various sources. Tube selection the only stipulations are that the two triodes within the envelope be the same and that the tube conforms to the 9a or 9aj base pinout. It was designed specifically for the purpose and released in 1954. This tube is sometimes called the equivalent for 6dj8ecc88 or 6922e88cc.
The ecc85 telefunken were installed in my ear 509 monoblocks. But if it is microphonic, it may still be a fun tube to try in your phaseinverter position if youve got a 12ax7 there now microphony will not be a problem in the pi. For instance e80f differs a lot from ef80 while premium ef80 is ef800. El95 6dl5 ei yugoslavia made for export, no printing. The booklet appears to have been intended primarily for home constructors the aim was clearly to sell valves. Valve data cdrom contents uk vintage radio service data. For most, the 6aq8, 6cg7, 6dj8, 12au7, 12bh7, or ecc99 will the first choices. It utilizes a medium length ribbed plate design that is much like the old amperex and brimar european designs. These amazing tubes are known for their amazing midrange and detailed inner respolution and have some of the highest strength and test results we have seen in any 7308 e188cc tube. My favorite one has date code 8t and single support rod. Gittervorapannung 939 0673 philips ecc818 vgv 7r031s5 i. Description the 6f5p triodepentode is designed for operation in vertical sweep units of widely used television receivers.
Tube crossreference european and 4 digit number to usa. In my listening experience, these 12bz7 are very, very clear articulate, and tend to emphasize treble a bit. These amazing tubes are known for their amazing midrange and detailed inner respolution and have some of the highest strength and test results we have seen in any. The ecc83 is still the most important preamp and driver tube. It has very solid body compared to a thin bodied presentation of the other tube. The coiled heater wire and the insulation applied to the wire are on the left and enter the bright cathode tube, the emissive coating being confined to the length within the anode. I used a european to american tube cross reference booklet. I also have date code 85 with dual supporting rods. I also have a jj ecc83s that im going to use in the first 12ax7 socket all the way to the right. My favourites are still the telefunken types and the large plate philips and siemens types from th.1413 841 1069 786 1018 168 28 605 135 1135 1351 913 1161 11 659 478 1494 140 1522 612 97 77 1242 65 628 1037 817 463 504 323 790 340 322 509 977 836 321 894 874 1231 116 413 876 902 262 241 1471 816 1466 222 506