Category: Jan 5u4gb

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Sylvania JAN 5U4GB Rectifier Tube Black Plate Tested 100%

New posts. Latest activity. Search forums. What is the best 5U4G? Thread starter Tango Start date Dec 8, JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. Mar 12, 3, 3, Bangkok. I have Ayon's own 5U4G in both mono blocs and preamp.

Out of curiosity I boght a pair. Right out of the box, they sounded more similar than different. Only Ayon's texture was more refine and the bass was tighter. I was told I need two weeks burn in. Any other challengers? Likes: Nascimento. Feb 26, 13, 2, London. Takatsuki, haven't heard. Audioquattr owns both WE b and a though Bill and I didn't prefer the latter. Haven't heard the first. Dec 12, 3, If you can use B, try the cheap Chinese Shuguang b.

Comparing GaN tube amplifier (latest cutting edge tubes) with a 300B SET

Finally, the Kron 5u4g has MUCH higher internal vacuum factor of 10xI was told than all the others and will last a lot longer. Last edited: Dec 8, May 2, Poland.

Tango said:. View attachment Tang. I use KR 5u4g in my B7. Just to clarify, they are made in the same factory, but not necessarily the same valve? Likes: marslo.Posted: Feb Fri 26, am. What's the difference - I'm assuming that they are interchangeable to some extent. Other than bulb shape and size, the later ones were somewhat improved in their ratings as far as maximum current and voltages. The 5U4GB will always replace a 5U4G, but not the other way around in some television sets where the rectifier tube worked hard.

But for radios, I don't see much difference in what is used. The 5U4G has a larger voltage drop. It's enough for me to prefer keeping 5U4G's in older gear that was designed for them. Higher rated 5U4's were originally designed for TV. Don't think any radios need 5U4GB unless for the shorter height.

Philips ECG JAN / 5U4GB-PHILIPS JAN

Posted: Feb Fri 26, pm. Posted: May Sat 14, pm. That 5v is a non issue You can compare 10 new 5U4 and voltage drop will likely vary more than that Like Tom said the 5 volts drop is no problem.

Drawing too much current due to a problem in the radio is the real problem and could burn up the power tranformer. That is why bad caps and out of spec resistors should be replaced. Also it is a good idea to check the sets current draw. Posted: May Sun 15, am. Doc, in your place, I'd run that radio on either a Variac or bucking transformer on general principles, like all gear of its generation, for it was designed for lower line voltages than those generally obtaining nowadays.

This is especially true of power tubes. Posted: May Sun 15, pm. Page 1 of 1. Previous topic Next topic. Shanghai Jack.

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Post subject: 5u4g vrs 5u4gb - What's the difference Posted: Feb Fri 26, am. Curt Reed. Post subject: Posted: Feb Fri 26, am. Silent Key. Lou deGonzague.Log in or Sign up. The Gear Page. Aug 7, 1. Messages: The sound was so much richer I don't remember any amp sounding that good Once, I read that, "An amp sounds it's best right before it blows up" So I put the 5AR4 back in and turned it on, and the power tubes were glowing blue, but not as intense.

JAN Phillips 5U4GB rectifier tube

My amp calls for a 5U4. Now the question I have is If the 5U4 is less efficient, [as I believe it is,than the 5AR4], would the output tubes need re biasing???

I mean Is it possible for the tubes to be running hotter with the 'less efficient' 5U4, I would like to put the 5U4G back in there but I don't want to burn up the 6V6's.

Eventually, I'm going to try some 5R4's for more sag at less filiment current. Blue Strat recommended that Thanks alot. Rod ParsonsAug 7, Aug 7, 2. Messages: 3, I think the big thing to worry about with a 5u4 is the PT. I believe the 5u4 pulls more current.

It should reduce the plate voltage on the tubes a bit. You should need to re-bias. I'm not sure about the blue thing. Red plates are always my big concern. Aug 7, 3.All our Preferred Series tubes are guaranteed for 6 months from the date of purchase. Any exceptions will be noted on that tube's Warranty tab If you receive a tube that does not perform to the manufacturer's specifications, please do the following: - contact us to get a return authorization - return it via regular mail within 6 months from when we shipped it, and we will provide an exchange or refund of the full purchase price of the tube.

jan 5u4gb

We can not accept returns that don't have an authorization, are past 6 months, or are returned improperly. These guidelines may be updated without notice. Great Tube used in my custom hi fi amp and pre. They look great and are very large.

Best sounding tube for the money IMO. Have used a few of these for 6 months or so and are holding up well. I use this rectifier tube in a home built 5E3-style amp and the sound great. The B is significantly less spongy than the standard 5Y3GT that is usually found in that circuit.

The B adds headroom, clean -ish tones and volume. Right now I'm switching between Tung-Sols and Mullards. This B rectifier tube is a great tube for the money it has a nice smooth balance. Very close to the Sophia in quality for far less money. To get noticeably better you would have to buy the Emission Labsbut is expensive.

jan 5u4gb

It neatly splits the difference between the euphonically forgiving-but-undisciplined sag of a 5u4, and the sometimes-too-tight-sphincter of a vintage 5ar4. In Melody Pure Black and P preamps, and in Quad II Jubilee power amps, I get burstier dynamics, deep bass finesse without bloat, best soundstaging and fluid musicality that exceeds any other rectifier I've used in the last 40 years. Also has proven durable.

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I also use it for tone and dynamic improvements in guitar amps where it fits. I replaced the stock tube in my Aric Audio Transcend pre-amplifier with this one. While the preamp was wholly satisfactory with the stock rectifier, this tube seemed to give me a little more space and extend the bass a bit. Note: I was unable to do side by side comparison, since the original tube had burned out. Javascript is disabled on your browser. To view this site, you must enable JavaScript or upgrade to a JavaScript-capable browser.

Best Seller.Our new search experience requires JavaScript to be enabled. Please enable JavaScript on your browserthen try again. Save 5u4g tube to get e-mail alerts and updates on your eBay Feed. Unfollow 5u4g tube to stop getting updates on your eBay Feed. You'll receive email and Feed alerts when new items arrive. Turn off email alerts.

5U4G / 5U4GB tubes

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Other than bulb shape and size, the later ones were somewhat improved in their ratings as far as maximum current and voltages. The 5U4GB will always replace a 5U4G, but not the other way around in some television sets where the rectifier tube worked hard.

But for radios, I don't see much difference in what is used. The 5U4G has a larger voltage drop. It's enough for me to prefer keeping 5U4G's in older gear that was designed for them. Higher rated 5U4's were originally designed for TV. Don't think any radios need 5U4GB unless for the shorter height. Posted: Feb Fri 26, pm. Posted: May Sat 14, pm. That 5v is a non issue You can compare 10 new 5U4 and voltage drop will likely vary more than that Like Tom said the 5 volts drop is no problem.

Drawing too much current due to a problem in the radio is the real problem and could burn up the power tranformer. That is why bad caps and out of spec resistors should be replaced. Also it is a good idea to check the sets current draw. Posted: May Sun 15, am. Doc, in your place, I'd run that radio on either a Variac or bucking transformer on general principles, like all gear of its generation, for it was designed for lower line voltages than those generally obtaining nowadays.

This is especially true of power tubes. Posted: May Sun 15, pm. Page 1 of 1. Previous topic Next topic. Shanghai Jack. Post subject: 5u4g vrs 5u4gb - What's the difference Posted: Feb Fri 26, am. Curt Reed.

jan 5u4gb

Post subject: Posted: Feb Fri 26, am. Silent Key. Lou deGonzague. They upped the peak plate current from ma on the G to 1 amp on the GB. Norm Leal. Post subject: Posted: Feb Fri 26, pm. I agree completely, Norm. Post subject: Posted: May Sat 14, pm. According to my edition "GE Essential Characteristics" manual, pretty much the opposite is true wrt voltage drop: the 5U4G drops 44V at ma and the 4U4GB drops 50 volts at ma.Fast responce!

Great transaction. Awsome shipping!

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Great value! I would buy from again Eric Mauney. I will ship with tracking to the continental United States. Alaska, Hawaii, and international shipments may incur additional charges.

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Sorry, this listing is no longer available. Bought this for an amp to try different tones. Condition Brand New New. Brand New items are sold by an authorized dealer or original builder and include all original packaging. Seller Reviews. Wampler Pantheon Overdrive. View All Reviews. Return Window This product can be returned within 14 days of receipt. General Terms Items must be returned in original, as-shipped condition with all original packaging and no signs of use.

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