Get your questions answered from other customers who own this product or have experience with it. Also, the five star ge 5751 is known to be one of ges best. The ocr functionality supports a base language set of english, french, german and spanish. Ive read that the 5751 smoothed out a lot of peoples amp sounds. Tube depot carries a selection of 5751 pre amp vacuum tubes. Ecc83 5751tung sol ru tungsol russia the tungsol ecc83 5751i s made in russia and is designed to replicate the performance of the classic american made. The sovtek 5751 is an affordable alternative to the 12ay7 used in original fender tweed amps and can be subbed for a 12at7 reverb driver tube. Preamp tubes 12ax7 ecc83 cv4004 5751 tube basics and faq. The licensed pdf xchange viewer pro, is a pdf creator in its own right that enables users to create pdf files directly from scanners, image files. Ive been considering getting a jan phillips 5751 for some time now to run in v1, but it seems theres always some. The distortion is round, and smooth, yet still very aggressive, and the cleans are great as well. Tracker software products pdfxchange viewer, free pdf. Whenever i read the word smooth, i automatically assume dull. This makes 5751 a better choice for many high linearity low distortion audio circuit.
When pdfxchange viewer is used in evaluation mode, many menu items are marked with a symbol, which indicates that they are licensed features. You can use acrobat for viewing and printing pdf files. The 5751 is a specialquality tube intended for use in critical industrial and military applications in which operational. Lower gain tubes have allowed the amplifier to yield more detail in the music. These are all pin compatable with one another, the only differences being the gain factor of each tube.
Joes tube lore is far from the authority on 12ax75751 or anything elsethe performance of a tube is going to be application dependent. A 5751 is a great way to tame down the buzziness and gain of an amp. I am really enjoying the musicality and dynamics of this tube. I am tube rolling in my rogue atlas magnum power amp for audio applications. The white print on the glass has the tungsol logo partial and reads jtl5751wa. The jj 5751 has all of the qualities we have come to expect from jj electronic, a nice tight low end, a natural open mid, a great harmonic structure and a sweet high end that is not brittle. Vacuum tube 5751, ge jan, dual triode, himu antique. These features can still be used, but watermarks will be present on output content, as detailed below. The 5751 is a special quality double triode that was designed to resist the effects of shock and vibration.
Tube 5751 or rohre 5751 id19047, double triode, noval, b9a and audio frequency shown. 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. Ive experimented with tube rolling with my streamliner to great success finally settled on a ge long plate 12ax7 in v1, if i recall. The tad selected 5751 is tube amp doctors first choice for noticeably improved clarity, smoothness, and a true. New production tubes from jj, sovtek and black sable treated jan phillips 5751 nos.
I had heard that lower gain tubes can help smooth that out, plus make the volume sweep more usable. The 5751 is a modified version of the 12ax7 and is used to soften up a harsh modern amp. The ge 5751 is an excellent tube, usually made to milspec, and stands a good chance of sounding better whatever that means than the russian tube. They have the extra reinforcement bars and crimpedthru reinforced black plates usa made vintage blackplate tube. Rare exceptional quality 1963 nos rca 5751blackplates 5751 srv favorite 12ax7 tube replacement. When buying a military version of the 5751, it must be noted that the earlier tubes sound better than the later ones. With classical, you really feel the vibration of the violin strings. Changes in the design made the tube more rugged, but it lost a lot of its tone. They only have 70% of the gain of a 12ax7, and are often used to quiet down guitar amps that have too. Our purpose is to serve the valuable tutorials entertainment and gaming techniques. The janphilips 5751 is a great choice for taming high gain guitar amps while vastly improving the clarity, smoothness, and vintage tone. Compared to the tung sol, the 5751 had a big more presence, great crunch, great clean tones, great overall sound. I have looked them up in the rca tube manual and while they look quite close, the 5751 has a slightly higher filament current, if i read it correctly. I see a lot of people selling the 5751 as an equivalent or direct substitute to the 12ax7.
The thin glass tube envelope is 21 mm in diameter, and excluding the b9a base pins is 48 mm tall. Its got the 5751 sense of focus in spades, is clean, open and evenhanded in frequency response if just a little sweet on top. To date, this jj 5751 is my preferred tube instead of a variety of 12ax7. Any one whos rolled tubes can tell you what works in one amp doesnt always work well in another. The hot rod deville 410 is a nice amp but at 60 watts of tube power it is a lot of amp. One of the most common recommendations is a jan philips 5751 in v1, and i can certainly see why, it sounded great. I was all set to dump my dsl 100 because i was sick of the harsh treble and undefined distortion.
And now, its connected to the adobe document cloud. Adobe acrobat reader dc software is the free global standard for reliably viewing, printing, and commenting on pdf documents. The gain factor of the 12ax7 is 100 and the gain factor for the 5751 is 70. Arcturus 5751 this is a nice heavy metal tube, imo heavy metal seems to be a bit bright, but not at all with this tube. Vacuum tube 5751, jj electronics a dual triode that can be used in place of most 12ax7 circuits. Kropotkin, i just received the rca 5751 tube in the mail, popped it into my amp, and let me say that its the greatest thing ive ever heard. The rugged build of this tube and reduced gain 30% less than a 12ax7 can improve headroom and give better. I specifically chose the 5751 tube based on the description i found on.
Your recommendation to add a mullard cv4024 and ge 5751 were dead on. Purchase jj 5751 vacuum tubes online, in stock and ready to ship. Noval uf 6,312,6 v if 350175 ma typical characteristics. A 5751 can be quieter in the phono position on some amps but you wont necessarily find them to image better. With the mullard in v1 and ge in v2, the amp sounds like a new animal. Note that matched pairs of 12ax7 are not required for guitar amplifiers. A pdf xchange editor license will directly license the viewer as well as the included pdf xchange lite. I had a 12au7 lying around and tried it in the v1 slot and it sounded like the proverbial wet blanket sound.
Joes tube lore is far from the authority on 12ax7 5751 or anything elsethe performance of a tube is going to be application dependent. This 196264 military spec tungsol 5751 tube is a lower gain 12ax7 equivalent. To resist vibration the bottom mica is doubled and. It has gray plates with copper grid posts and a halo or disc getter. A pdfxchange editor license will directly license the viewer as well as the included pdfxchange lite. Here youll find a modest collection of datasheets for some popular tubes. I play a strat into a deluxe reverb and the tone is full and clean. You can find curve plots for 12ax7 chinese, sovtek, and tesla on our tube data page. Comparison of 5751 tubes raytheon, sylvania, and more.
I also didnt trust my ears to be objective for long enough to really test all the different models available on different amps etc. Im a huge stevie ray vaughan fan and this tube is a major major part of the srv tone. Mar 04, 2012 1 thought on rca 5751 black plates, 3 mica nsokratov on april 1, 2012 at 5. This is a suitable replacement for any 5751 tube type. If its possible for a tube to be bright, airy, and smooth, this is it. Great in audiophile amplifiers and fender guitar amps too. I felt like when over driven or when a big muff fuzz was engaged it sounded a little fizzy. They still have plenty of gain so if you have a highgain preamp that does not have that classic crunch characteristic, the 5751 tube will do wonders. If your question requires design or troubleshooting information, please email email protected for. I had also seen a video by phillip mcknight where he placed a 12at7 in v1 to make the volume more usable.
Nos siemens 5751 tubesextremely detailed,beautifully clear and transparent top end, very defined and tight bass. I use in conjunction with an eh 12au7 gold that drive kt 120 tubes. However, the plate resistance and transconductance are such that this tube makes a good substitute for type 12ax7. 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. The pdfxchange viewer has been replaced by the all new pdfxchange editor which extends the power of the viewer pro with many new features, headlining, direct content editing of text based pdf files not pdfs created from images or scans. Tracker software products pdfxchange viewer, free pdf reader. Nos tube specification sheet nos tube specification sheet. To resist vibration the bottom mica is doubled and there are two separate top micas. The green or blue print on the glass reads philips ecg jan 5751. The 5751 is not a true 12ax7, but is often used in place of a 12ax7. This military spec sylvania 5751 tube is a lower gain equivalent for the 12ax7.1417 484 958 1477 556 440 601 813 453 451 797 168 876 22 1245 262 627 489 3 267 1310 429 536 202 933 421 31 845 374 1297 1333 235 320