en 40’s Ken-Rad 6v6GT/G is louder than RCA, GE, Sylvania 6v6GT

Updated on May 17, 2019 | 156 Views all
0 on May 17, 2019

while my 5F1 project is not loud enough with Jensen 10J11 speaker, I tried a few different 6v6 tubes for the last few days.

I noticed Ken-Rad 6v6GT/G tubes are louder than the other tubes. and the texture with this tube is acoustic and strong. 

I don’t see the difference between RCA, GE, and Sylvania 6v6gt tubes that much. GE Canada 6v6GT is a bit brighter than 50’s stock tweed RCA and 60’s Sylvania but, Ken-Rad 6v6GT/G sounds way different to them

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  • en modern 5F1 with Boothill kit and Mergili cabinet

  • found this nicely built 5F1 with 10″ WGS speaker in Mergili cabinet on Ebay while I was in search of the parts for my first 5F1 build. grabbed it off for very good price and I’m changing the components and wires one by one like the filter caps, bypass caps, speaker wires along with the plug.

    I think the speaker wires and Amperex 12ax7 changed way more than the capacitors. I’m waiting for yellow and red Jupiter 0.022 caps as well. an A/B comparison video on youtube was very interesting. and red one looks very close to the original Astron firecracker.

    there are few tweed amp inspired cabinets around. and it’s the first cab I like except for the original ones. this cabinet sings with WGS ceramic speaker. I’ve been biased toward vintage Jensen alnico speakers so far. and this speaker changed it a bit

     

    the orange filter caps are Roederstein 33uf 450v which replaced the stock caps from the kit. I didn’t know the limit of 5y3 and was brave enough to put two of them on it. then realized the rectifier was too hot and went to 33+10+10.

    the first 33uf right next to the rectifier seems fine so far. I’ve tried on the original 5D3 and 5F1 without an issue before. this very capacitor is one of the caps I trust most

     

     

    this 5F1 is dead quiet and the filament wiring is a bit different to the original champ. I’m trying to figuring out it. nothing is easy with the electric stuff even 5F1 is this simple.

    I’ve got some NOS Sprague black beauty caps 15 years ago and tried it on this amp. I expected something vintage with them. but I’ve learned they are not useful as the coupling caps. they were good as the guitar tone caps. but they dramatically reduced the output volume regardless of the values. realized why my 18watt replica’s output volume was that low 15 years ago today. I’m still wondering why anyway. 

    [update] the sprague caps I put on this amp had twice high capacitance than the marking. I couldn’t find any 0.02 and tried 0.03 but they actually were over 0.05. higher capacitance changes the frequency and reduces the output volume as I learned from them. and NOS caps need time to break in. they sound getting louder for the last few days

     

     

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  • en Double standards over ideological confrontation

  •  

    It seems to be true that CJD patients really exist in Korea.

    Otherwise, the fact that you can easily find out in a simple Google search in English cannot be denied unconditionally like religion.

    It is more likely to cut my fingers and hands, which are frequently exposed to radiation during orthopaedic surgery, than to eat and die from seafood contaminated with Fukusima Daiichi radioactivity.

    Everyday is really a series of shocks and sucks.

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  • en I’m into 5v4g than 5y3 with 6v6 tweed amps

  • [EDIT]

    I’m updating this post not to make people confused. I believed B+ was lower with 5v4g than 5y3. but 5v4g is increasing B+ and makes the bias warmer than 5y3. I guess it is the reason I feel the amps are more alive with 5v4g

    then I noticed the vintage amps with the original caps from 50’s and early 60’s are more vulnerable with 5v4g to 60hz hum. I’m just guessing leakage of the coupling caps and the filter caps could be the reason. I’m still enjoying 5v4g with the amps with new components. didn’t have an issue with my 5D3 which has new filter caps either. 

    [EDIT again]
    one of my 5V4G tubes shows very low B+. the 60hz hum came from it I believe

    there are more and better info for 5vg and 5y3 rectifiers on the gearpage.net 

    https://www.thegearpage.net/board/index.php?threads/swapping-rectifier-tubes-5ar4-vs-5r4-vs-5v4-vs-5y3.1382681/

     

    I hook up tweed champ, deluxe, and m-track 2×2 together while jamming with youtube. 5v4g sounds still alive with this stereo and digital setup to me. but, m-track 2×2 is cheap and sharing the one single full bandwidth with usb and instrument at the same time. it sounds good while using only one of them. it sucks when the knob is at the center.

    it’s the knob on m-track 2×2. don’t buy it if you want to use your guitar amps as monitor speakers while playing guitar through the direct input. maybe I’m just doing this wrong. 

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  • en Fender tweed deluxe 5D3 b+ voltage with a few different rectifier tubes

  • 377V with Bendix 6106 5y3wgt which has purchased as NOS and less than 1 year old

    366V with Hytron 5y3wgt which is many many years old

    369V with GE 5y3gt less than 1 year old

    393V with GE 5v4g which I purchased as NOS and less than 1 year old

    396V with RCA 5v4g as NOS and less than 1 year old

    370V with another Bendix I have purchased as slightly used condition a couple of months ago

    btw, I recently scored this Bendix for $25 off ebay. but it just killed my 5F1’s fuse and the B+ is only 266V with 5D3. not every single Bendix lasts like forever

    and, figured out why I had 60hz hum with this 5v4g. this one shows only 307v. I’m going to update the 5v4g thread

     

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  • en don’t want this but still interesting

  • Barbie is getting a David Bowie Makeover. This Barbie x David Bowie Doll is a part of the Gold Label Collection.

     

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  • en DNA: Life’s Changelog

  • One of the most interesting things about DNA is that we have discovered, in humans, the 3% of the code which builds our physical bodies also has encoded within the bodies of all of our ancestors. We can switch on these old systems (in animals of course since this would be highly unethical to do to human beings) and give a chicken teeth or scales. We are not just us. We are all the physical forms in our lineage.

    Now, that accounts for 3% of our storage. What of the other 97%? It is memories. Now the skeptic will go “yeah right Mr. Science”. Hear me out here though. Why is it so hard to accept memories encoded into the helix? In fact all “instinct” is encoded memory. What beach to lay your eggs by the light of the full moon if you are a tortoise. Where to migrate if you are a starling or a monarch butterfly. Sharks even have maps of the magnetic markers on the seafloor. None of this is learned. It is there at birth.

    There is a very good evolutionary reason for this. Rapid adaptation. We have a repository of past experiences so we do not have to reinvent the wheel every time our environment changes. Human beings have noted this for at least as long as we have records and this has given rise to theories of reincarnation which appeared in nearly every civilization on Earth. Science has resisted this because it sounds too “supernatural” in the same way they resisted the “Big Bang” because it sounded too much like creation. Yet, it is anything but supernatural. It is entirely natural and the only explanation which makes any sense.

    #Science #Philosophy #Biology #Life #Origins

    (Picture courtesy of Ya-Webdesign)

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  • en Static electricity could charge our electronics.

  • Unhappy with the life of your smartphone battery? Thought so. Help could be on the way from one of the most common, yet poorly understood, forms of power generation: static electricity.


    (Image credit: Schlueter/Getty)

    “Nearly everyone has zapped their finger on a doorknob or seen child’s hair stick to a balloon. To incorporate this energy into our electronics, we must better understand the driving forces behind it,” says James Chen, PhD, assistant professor in the Department of Mechanical and Aerospace Engineering in the School of Engineering and Applied Sciences at the University at Buffalo.

    Chen is a co-author of a study in the December issue of the Journal of Electrostatics that suggests the cause of this hair-raising phenomenon is tiny structural changes that occur at the surface of materials when they come into contact with each other.

    The finding could ultimately help technology companies create more sustainable and longer-lasting power sources for small electronic devices.

    Supported by a $400,000 National Science Foundation grant, Chen and Zayd Leseman, PhD, associate professor of mechanical and nuclear engineering at Kansas State University, are conducting research on the triboelectric effect, a phenomenon wherein one material becomes electrically charged after it contacts a different material through friction.

    The triboelectric effect has been known since ancient times, but the tools for understanding and applying it have only become available recently due to the advent of nanotechnology.

    “The idea our study presents directly answers this ancient mystery, and it has the potential to unify the existing theory. The numerical results are consistent with the published experimental observations,” says Chen.

    The research Chen and Leseman conduct is a mix of disciplines, including contact mechanics, solid mechanics, materials science, electrical engineering and manufacturing. With computer models and physical experiments, they are engineering triboelectric nanogenerators (TENGs), which are capable of controlling and harvesting static electricity.

    “The friction between your fingers and your smartphone screen. The friction between your wrist and smartwatch. Even the friction between your shoe and the ground. These are great potential sources of energy that we can to tap into,” Chen says. “Ultimately, this research can increase our economic security and help society by reducing our need for conventional sources of power.”

    As part of the grant, Chen has worked with UB undergraduate students, as well as high school students at the Health Sciences Charter School in Buffalo, to promote science, technology, engineering and math (STEM) education.

    Source: http://www.buffalo.edu/news/releases/2019/01/024.html

    #Sustainability #Engineering #Science #World #Future

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  • en e46 and other old BMW in music videos

  • https://www.youtube.com/watch?v=K3JGxj2rvAs

    I Follow Rivers – Lykke Li

    you can found e46 at 0:12, actually i’m not sure that is really e46 but at least it is almost same :p

    https://www.youtube.com/watch?v=eJnQBXmZ7Ek

    twenty one pilots – Chlorine

    you can found e46 at 2:17 in this video, idk why but that back lights is black covered

    https://www.youtube.com/watch?v=x3bfa3DZ8JM

    Khalid – Better

    this one is absolutely not e46, but it still looks rare.

    https://www.youtube.com/watch?v=ApXoWvfEYVU

    Post Malone, Swae Lee – Sunflower

    not e46, but similar one. 0:12 and 0:53

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  • en inside of Wem Pepbox rush from British Pedal Company

  • I see two of ACY41 germanium transistors on the board.

    Grabbed this off ebay for a great price. two hundred something in USD. it sounds great and quite different than my Bum fuzz and old Sola Sound fuzz pedal a friend has.

    but, it has an issue. it rattles on high level. I’m sending back this back to British Pedal Company. 

     

     

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  • en wisdom in the color of white

  • sometimes, words are like the windows through the history and culture. now I see why we keep seeing the white witches and wizards who are the symbols of wisdom on the movies. and why we have the similar names from the western culture. 

     

     

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