I have used Hayseed Hamfest for years. I am surprised that most users didn’t know they were “stuffing” their own in-house built cans. I first heard about them in Electric Radio. I don’t know if I read about how they build them in ER or QST, but I thought it was common knowledge. They do good work and Tom and his crew have been very helpful in supplying my needs, whether something off the shelf or something custom made. They are a nice alternative to doing the re-stuff myself. Please, let’s keep them going! 73, Chris, N9WHH.
Hello, Mark. Hello, folks. It's Tom from Hayseed Hamfest. At the moment we have roughly 18,000 can-caps in service., some as old as 13 years. During the time we have been in existence the matter of what caps we use, how we use them, and why, has been openly discussed countless times, directly with customers and on forums such as Audio Karma, eHam, Glowbugs, RUclips, etc. Here is the that info again: Primarily to enable us to provide custom specifications to our customers, and to keep our products "state of the art" in terms of capacitor development, we use discrete radial capacitors in our can-caps. Roughly 90% of the caps we use are Nichicon or United Chemicon. The remaining small percentage includes Panasonic, Illinois, Rubycon, Vishay/Sprague and Roderstein. Nothing from the PRC-based companies. I would like to correct an omission in this video by calling attention to a certain European brand of can-capacitor, highly regarded here in the States, and point out that they also use discrete capacitors for their can caps, a tried and true method of construction. Why does the rating on our label often differ from that on the enclosed discrete caps? Discrete electrolytic caps have a tolerance of plus or minus 20%. Thus, a 47 uF cap can be anywhere from 37.6 uf to 56.4 uF. Here is a typical real-life situation: a particular Nichicon 47 uF radial that we use will actually measure between 42 uF-44 uF. This is within "their" spec, but if we are going put that cap in a can that says "Hayseed" on the side, it will be labeled as a 40 uF and NOT 47 uF. We think you'd rather have it that way Thank you everyone, and thank you Mark for providing me with this venue to address the questions raised in this video. 73 and pray for sunspots, Tom WBØDVM Hayseed Hamfest LLC
I'm kind of shocked anyone would just assume that the can capacitors were made like they were made in the old days. I mean seriously, who would want an authentic can capacitor made using 60 or 70-year-old machines using 60 or 70-year-old techniques. I'd much rather have my can capacitor stuffed with a modern Nichicon or equivalent quality capacitor. And I'm happy to pay people like Hayseed Hamfest for doing it.
The whole scenario in life; if you want something you have to work for it & fight for it. Make things happen. This going out of business stuff has got to stop, screw Covid- 19. Can't live in fear.
I’ve used Hayseed Hamfest Capacitors for some time and have known that they were stuffed. I’m pretty sure this information was on their old website and they made no secret about it.
Hayseed doesn't make the caps themselves. I've been using the caps for 30 years without problems before Hayseed ever sold them. I always knew they were made of discreet components. I thought the quality was fabulous. The aesthetics are great and fit like the originals. I sometimes requested custom values for my repairs. Far as I know, the person who was manufacturing them has retired.
Delatsch has great videos, I've watched all of them and some of them many times. Last year I believe it was you had mentioned doing transformer winding when you retire and had acquired someone's winding business/gear. ANY videos you are willing to make or information you are willing to share on this topic would be beyond appreciated. Hope you and your family are doing well and you're staying on top of your health. J.
@@BlankBrain Unfortunately, you may well be correct(let's hope not though.... lol). However, I would think that if core laminations become hard or impossible to get, that being in the business of rewinding blown transformers would be pretty smart. Not to mention scavenged cores could be repurposed if you can identify the core material. I suppose you could even if you didn't know what the core material was exactly, but I'm not sure how you would calculate the permeability. This is exactly the type of thing I'd very much like to learn more about.
@@BlankBrain Buying core materials is very possible, but it is a game of quantity and pricing, so without really huge demand the large companies cannot survive. End bells, wire, isolation materials, skilled workers are very expensive to maintain without tons of orders.
@@markodelac1528 Thank you for the wonderful videos and information!!! Your content has been beyond valuable to me, and I plan to (hopefully soon) purchase your spreadsheets. I was very intimidated by the task of making transformers prior to watching your videos. Since I've made several successfully from repurposed microwave oven transformer cores and wire salvaged from deflection coils of old TVs, basically turning trash into treasure. In fact, were it not for the wonderful information gained from you, mark, and several other RUclipsrs, I would not be able to enjoy this hobby of tube amp building due to the prohibitive cost of some of the parts (mainly transformers!). Sincerely, thank you both!!! J.
Transformers - I used to work for a major valve hifi company and on the fourth time a transformer company went bust on us we spoke to the liquidators and bought all their winding gear. Delatsch - Americans try to pronounce as much of the front of the word as possible, so Debussy becomes 'Debut-See'. Pronounce 'De' on it's own then the rest and its much easier and correct. ;o) Its most probably pronounced 'De-Latch' with a soft ch
Thanks for the shout-out, Mark! It is pronounced sort of like "Dell"+"etch". (It's a variation of my last name) Not sure if you've sent the comment on the previous video, so I thought I re-post it here. Feel free to contact me when you find the time.
Regarding Hayseed's caps, I agree that stuffing off-the-shelf caps into a can isn't what one would expect, given the nature of the end product. I hope their intent was not to deceive. I'm curious what their response is, if any. Regarding the capacitance values (e.g., 45 vs 47 µF) on the can, since the caps are rated at ±20%, there's a lot of wiggle room to choose a nominal value to stick on a label. Would that also be considered deceptive or just clever?
@@diabolicalartificer D.A., you need to do a little more due diligence. FT can-caps use discrete caps, just like ours. And as for temperature ratings, our caps are rated at 105C, the FT is 70C.
@@diabolicalartificer As you wish, DA. I've switched to decaf for the day. A good place to learn about FT twist-tab can-caps by going to people that sell them, such as the good folks at Dynakit. In their words, "Unlike the original, this is a modern design multi-section capacitor consisting of (4) discrete high quality “low ESR” high voltage caps mounted in a twist-lock style can". Obviously, they're quite proud of that, as well they should . I admit that it irritates me is that for some reason, Hayseed is called out in this video for the very thing that is done in the much vaunted FT/Authenticap/Dynakit. Obviously, we've not done a good job at marketing the product. "Operating temperature" rating (not sure why they call it that), along with rated voltage, maximum ripple current and a several others things, is a standard parameter of the test that determines the expected lifespan of a given cap design. That's another can of worms, but 105C is 105C, and 70C is 70C. By the way, we heat and cool our can-caps to that rating twice during the testing process, during which we measure capacitance, current leakage, ESR, and dielectric absorption on Sencore and B&K instruments. In answer to your question regarding the caps that we use: ~90% Nichicon and United Chemicon, ~10% Panasonic, Illinois, Rubycon, Vishay /Sprague, Roderstein. 0% copmpanies based in PRC. [WARNING: Shameless name dropping ahead] We're pleased to count such musicians and ham operators as Joe Walsh and Jimmy Page, as well as Mike Love's current iteration of The Beach Boys- and thousands of others folks as Hayseed customers. Yet *not one* of them is more important to us than you, Mr. DA. We would be honored to be of service to you and anyone else in need of high quality can-caps. Thanks, Tom
Using discreet caps was exactly what I would have, and did expect. It's nearly 2021 dude. But either way you're getting a device which will do exactly what the original did while maintaining the look. I don't see the problem here.
@@diabolicalartificer You don't give a FF about what? This subject? Then why are you acting like a douchebag in the comments? "Those Hayseed stuffed caps won't perform the same as a custom canned cap wound with one foil for ground, and several other foils for each cap value." Dude, the electrons don't care. Or are you one of these magic "audiophiles" who thinks he can hear better than test equipment?
I know its not letter of the law exact but what about using toroidal transformers for the WE 91 build? There are some out there from Toroidy, and Antek. At least for OPT purposes the Toroidy's have 3.3K &3K primaries for 300Bs. For the power transformer maybe Antek could accomodate a custom order? If not, they can be tweaked easily to unwind the 6.3's (most have 2) to 5V windings. Much of their HV inventory has 2 x 6.3 4A windings at the 400V @.3-4A CT HV. They can run on 120/240V primaries. Just a thought.
The reason the nassau solder is selling for prices like that is because people who collect western electric and need to work on it has to use that specific solder to keep it original. That's What I was told about the 6 rolls I got from my grandfather shop.
I too recently received an email from Classic Tone stating they were closing....sad..I used them for guitar amp builds many times...and they are good people. Makes sense that one of their engineers sounded depressed last time I spoke with them..I hate it for me but more for the guys losing their jobs. I use Mojotone now..not bad and good people too. I also used Hayseed hempfest for some replacement caps on McIntosh geer... I did assume they were stuffing, but they gave me what I needed- size and shape. My stuff jobs were too ugly.. Keep us posted on the Transformers
I don't mind them stuffing the cans but WHAT are they stuffing them with?? Are they using a good quality caps, Nichicon, Atom etc or some backroom, sweatshop, asian POS?????? Since we are all paying good money for these replacements, maybe hayseed should open up about their parts choices. I have restuffed cans for years b4 Hayseed but I always used very good pieces from Digi Key or Mouser.. I hope the Hayseed replacements will last !!
Hello. It's Tom from Hayseed. We appreciate your concerns. It's obvious we should do a better job marketing and publicizing these specs. Here, then is the scoop: Roughly 90% of the caps we use in our cans are Nichicon or United Chemicon. The remaining small percentage are brands we use as required by certain applications. These include Panasonic, Illinois, Rubycon, Vishay/Sprague and the occasional Roderstein. There are none from companies in the PRC. Thank you for bringing this up. I hope we can be of service to you. 73 es pray for sunspots, Tom WBØDVM Hayseed Hamfest LLC
I've long wondered about using toroidal transformers to build an amp, and am planning to do just that based on 807 design from a few years ago, but using 6DQ6s. Antek makes some nice looking toroidals that appear to be well made and at decent prices. Maybe that is an option in this case? I understand it might not fit with the aesthetic that certain people want from a tube amp though.
Hayseed doesn't make the caps themselves. I've been using the caps for 30 years without problems before Hayseed ever sold them. I always knew they were made of discreet components. I thought the quality was fabulous. The aesthetics are great and fit like the originals. I sometimes requested custom values for my repairs. Far as I know, the person who was manufacturing them has retired.
I may be inviting some “responses” but for acoustics, I am a fan of Dennis Foley at Acoustic Fields. He has a pretty active RUclips channel, but to me it seems his services and products are based on solid , fundamental acoustic principles and engineering. The room you showed is, indeed, awful for music, including that the ceiling is so low you might not be able to do anything to fix the room.
Is there any way you may be able to find out where the transformer companies get their materials. I had an idea that I wanted to make my own transformers.
This is from Hayseed web site. It is a divergent and running around answer at best. " Does Hayseed Hamfest re-stuff old capacitors, or wind new can capacitors on old machinery? Neither! Hayseed Hamfest uses all new materials and state-of-the-art discrete aluminum electrolytic capacitors from top brands -- the vast majority from either Nichicon or United Chemi-Con. Certain values may be supplied by other high quality manufacturers such as Panasonic, Illinois Capacitor, or Kemet. We do not use any 'generic' discrete caps, nor do we re-stuff old can capacitors, or make old-style cans on outdated equipment. Our capacitors are rated 105C, and ±20% for capacitance. "
I guess I’m confusing Mark with someone else, but I was thinking that he was in the process of building up his own transformer winding company; buying another company out or something...
Sadly, shortly there after I took a job running a large technology company and it has been consuming all of my time. I ended up selling the company to a friend who is working on getting up to speed but it may still be a year or three as he has a day job too.
Audio note make probably the best capacitors for Valve amplifiers silver oil soaked myler is reckoned to be the best, but there is a lot of fakes out there so buy from the company audio note, co, uk if you want diffusers you can make your own quadratic diffusers just Google quadratic diffuser calculator. Natural wool fleece is probably the best for absorption at low frequencies down and below 20Hz more than any other material.
Bummer about Magnetic Components / Classic Tone. With RUclips / Facebook having drained the life from the enthusiast bulletin boards and personal websites, I think the 30 year golden age of DIY tube gear building / repair has ended. I'm finding it difficult to get enthused about starting a new project.
"lack of transparency"?!? NO! If there is uncertainty about a product or specifications are not specific and clear, it is up to the knowledgeable customer to ASK. You make assumptions. you get what they give you. I have always assumed the cans from all these places were stuffed.
It's up to the supplier to represent an item accurately. Stuffing is not the traditional construction and might affect performance so it's not more than logical to mention it. That said, you can sort of see it given the construction, but only if you have an in depth knowledge of components. Many users haven't and shouln't necesarrily have to.
Vintage solder will most likely be oxidised (oxidation contaminates the joint, ATT would have thrown the stuff out as useless), so, you have get rid of the oxidation before use, a right royal PITA, why bother? Your building an amp not a submarine cable. Some folk have more money than sense....DA.
If memory serves, you were in the process of bringing home a large amount of transformer winding equipment from somewhere in New England when you had your heart attack. Sounds to me like its time for you to start dusting that stuff off and getting ready to fill a niche. . .
I have used Hayseed Hamfest for years. I am surprised that most users didn’t know they were “stuffing” their own in-house built cans. I first heard about them in Electric Radio. I don’t know if I read about how they build them in ER or QST, but I thought it was common knowledge. They do good work and Tom and his crew have been very helpful in supplying my needs, whether something off the shelf or something custom made. They are a nice alternative to doing the re-stuff myself. Please, let’s keep them going! 73, Chris, N9WHH.
Hello, Mark. Hello, folks. It's Tom from Hayseed Hamfest.
At the moment we have roughly 18,000 can-caps in service., some as old as 13 years. During the time we have been in existence the matter of what caps we use, how we use them, and why, has been openly discussed countless times, directly with customers and on forums such as Audio Karma, eHam, Glowbugs, RUclips, etc. Here is the that info again:
Primarily to enable us to provide custom specifications to our customers, and to keep our products "state of the art" in terms of capacitor development, we use discrete radial capacitors in our can-caps. Roughly 90% of the caps we use are Nichicon or United Chemicon. The remaining small percentage includes Panasonic, Illinois, Rubycon, Vishay/Sprague and Roderstein. Nothing from the PRC-based companies.
I would like to correct an omission in this video by calling attention to a certain European brand of can-capacitor, highly regarded here in the States, and point out that they also use discrete capacitors for their can caps, a tried and true method of construction.
Why does the rating on our label often differ from that on the enclosed discrete caps? Discrete electrolytic caps have a tolerance of plus or minus 20%. Thus, a 47 uF cap can be anywhere from 37.6 uf to 56.4 uF. Here is a typical real-life situation: a particular Nichicon 47 uF radial that we use will actually measure between 42 uF-44 uF. This is within "their" spec, but if we are going put that cap in a can that says "Hayseed" on the side, it will be labeled as a 40 uF and NOT 47 uF. We think you'd rather have it that way
Thank you everyone, and thank you Mark for providing me with this venue to address the questions raised in this video.
73 and pray for sunspots,
Tom WBØDVM
Hayseed Hamfest LLC
Excuse, excuse and excuse!
I'm kind of shocked anyone would just assume that the can capacitors were made like they were made in the old days.
I mean seriously, who would want an authentic can capacitor made using 60 or 70-year-old machines using 60 or 70-year-old techniques. I'd much rather have my can capacitor stuffed with a modern Nichicon or equivalent quality capacitor. And I'm happy to pay people like Hayseed Hamfest for doing it.
The whole scenario in life; if you want something you have to work for it & fight for it. Make things happen. This going out of business stuff has got to stop, screw Covid- 19. Can't live in fear.
I’ve used Hayseed Hamfest Capacitors for some time and have known that they were stuffed. I’m pretty sure this information was on their old website and they made no secret about it.
Hayseed doesn't make the caps themselves. I've been using the caps for 30 years without problems before Hayseed ever sold them. I always knew they were made of discreet components. I thought the quality was fabulous. The aesthetics are great and fit like the originals. I sometimes requested custom values for my repairs. Far as I know, the person who was manufacturing them has retired.
Delatsch has great videos, I've watched all of them and some of them many times. Last year I believe it was you had mentioned doing transformer winding when you retire and had acquired someone's winding business/gear. ANY videos you are willing to make or information you are willing to share on this topic would be beyond appreciated. Hope you and your family are doing well and you're staying on top of your health.
J.
It may be impossible to buy core materials, unless he buys a foundry and rolling mill too.
@@BlankBrain Unfortunately, you may well be correct(let's hope not though.... lol). However, I would think that if core laminations become hard or impossible to get, that being in the business of rewinding blown transformers would be pretty smart. Not to mention scavenged cores could be repurposed if you can identify the core material. I suppose you could even if you didn't know what the core material was exactly, but I'm not sure how you would calculate the permeability. This is exactly the type of thing I'd very much like to learn more about.
Thank you for your kind words!
@@BlankBrain Buying core materials is very possible, but it is a game of quantity and pricing, so without really huge demand the large companies cannot survive. End bells, wire, isolation materials, skilled workers are very expensive to maintain without tons of orders.
@@markodelac1528 Thank you for the wonderful videos and information!!! Your content has been beyond valuable to me, and I plan to (hopefully soon) purchase your spreadsheets. I was very intimidated by the task of making transformers prior to watching your videos. Since I've made several successfully from repurposed microwave oven transformer cores and wire salvaged from deflection coils of old TVs, basically turning trash into treasure. In fact, were it not for the wonderful information gained from you, mark, and several other RUclipsrs, I would not be able to enjoy this hobby of tube amp building due to the prohibitive cost of some of the parts (mainly transformers!). Sincerely, thank you both!!!
J.
Transformers - I used to work for a major valve hifi company and on the fourth time a transformer company went bust on us we spoke to the liquidators and bought all their winding gear.
Delatsch - Americans try to pronounce as much of the front of the word as possible, so Debussy becomes 'Debut-See'. Pronounce 'De' on it's own then the rest and its much easier and correct. ;o) Its most probably pronounced 'De-Latch' with a soft ch
Yes, you are correct, "the-latch" is the closest for English speakers and the ch is not soft. :)
Thanks for fixing and reuploading :)
Thanks for the shout-out, Mark! It is pronounced sort of like "Dell"+"etch". (It's a variation of my last name) Not sure if you've sent the comment on the previous video, so I thought I re-post it here. Feel free to contact me when you find the time.
Sorry I butchered the name
@@Blueglow No worries, it is a strange one :)
Regarding Hayseed's caps, I agree that stuffing off-the-shelf caps into a can isn't what one would expect, given the nature of the end product. I hope their intent was not to deceive. I'm curious what their response is, if any.
Regarding the capacitance values (e.g., 45 vs 47 µF) on the can, since the caps are rated at ±20%, there's a lot of wiggle room to choose a nominal value to stick on a label. Would that also be considered deceptive or just clever?
@@diabolicalartificer D.A., you need to do a little more due diligence. FT can-caps use discrete caps, just like ours. And as for temperature ratings, our caps are rated at 105C, the FT is 70C.
@@diabolicalartificer As you wish, DA. I've switched to decaf for the day.
A good place to learn about FT twist-tab can-caps by going to people that sell them, such as the good folks at Dynakit. In their words, "Unlike the original, this is a modern design multi-section capacitor consisting of (4) discrete high quality “low ESR” high voltage caps mounted in a twist-lock style can". Obviously, they're quite proud of that, as well they should . I admit that it irritates me is that for some reason, Hayseed is called out in this video for the very thing that is done in the much vaunted FT/Authenticap/Dynakit. Obviously, we've not done a good job at marketing the product.
"Operating temperature" rating (not sure why they call it that), along with rated voltage, maximum ripple current and a several others things, is a standard parameter of the test that determines the expected lifespan of a given cap design. That's another can of worms, but 105C is 105C, and 70C is 70C.
By the way, we heat and cool our can-caps to that rating twice during the testing process, during which we measure capacitance, current leakage, ESR, and dielectric absorption on Sencore and B&K instruments.
In answer to your question regarding the caps that we use: ~90% Nichicon and United Chemicon, ~10% Panasonic, Illinois, Rubycon, Vishay /Sprague, Roderstein. 0% copmpanies based in PRC.
[WARNING: Shameless name dropping ahead] We're pleased to count such musicians and ham operators as Joe Walsh and Jimmy Page, as well as Mike Love's current iteration of The Beach Boys- and thousands of others folks as Hayseed customers. Yet *not one* of them is more important to us than you, Mr. DA. We would be honored to be of service to you and anyone else in need of high quality can-caps.
Thanks,
Tom
Using discreet caps was exactly what I would have, and did expect. It's nearly 2021 dude.
But either way you're getting a device which will do exactly what the original did while maintaining the look. I don't see the problem here.
@@diabolicalartificer You don't give a FF about what? This subject? Then why are you acting like a douchebag in the comments?
"Those Hayseed stuffed caps won't perform the same as a custom canned cap wound with one foil for ground, and several other foils for each cap value."
Dude, the electrons don't care. Or are you one of these magic "audiophiles" who thinks he can hear better than test equipment?
@Diabolical Artificer has left the building.
I know its not letter of the law exact but what about using toroidal transformers for the WE 91 build? There are some out there from Toroidy, and Antek. At least for OPT purposes the Toroidy's have 3.3K &3K primaries for 300Bs. For the power transformer maybe Antek could accomodate a custom order? If not, they can be tweaked easily to unwind the 6.3's (most have 2) to 5V windings. Much of their HV inventory has 2 x 6.3 4A windings at the 400V @.3-4A CT HV. They can run on 120/240V primaries. Just a thought.
63/37 is ‘eutectic’ solder. It melts at the lowest possible temperature for a tin-lead alloy.
The reason the nassau solder is selling for prices like that is because people who collect western electric and need to work on it has to use that specific solder to keep it original. That's What I was told about the 6 rolls I got from my grandfather shop.
I too recently received an email from Classic Tone stating they were closing....sad..I used them for guitar amp builds many times...and they are good people. Makes sense that one of their engineers sounded depressed last time I spoke with them..I hate it for me but more for the guys losing their jobs. I use Mojotone now..not bad and good people too. I also used Hayseed hempfest for some replacement caps on McIntosh geer... I did assume they were stuffing, but they gave me what I needed- size and shape. My stuff jobs were too ugly..
Keep us posted on the Transformers
I don't mind them stuffing the cans but WHAT are they stuffing them with?? Are they using a good quality caps, Nichicon, Atom etc or some backroom, sweatshop, asian POS?????? Since we are all paying good money for these replacements, maybe hayseed should open up about their parts choices.
I have restuffed cans for years b4 Hayseed but I always used very good pieces from Digi Key or Mouser.. I hope the Hayseed replacements will last !!
Hello. It's Tom from Hayseed. We appreciate your concerns. It's obvious we should do a better job marketing and publicizing these specs. Here, then is the scoop:
Roughly 90% of the caps we use in our cans are Nichicon or United Chemicon. The remaining small percentage are brands we use as required by certain applications. These include Panasonic, Illinois, Rubycon, Vishay/Sprague and the occasional Roderstein.
There are none from companies in the PRC.
Thank you for bringing this up. I hope we can be of service to you.
73 es pray for sunspots,
Tom WBØDVM
Hayseed Hamfest LLC
I've long wondered about using toroidal transformers to build an amp, and am planning to do just that based on 807 design from a few years ago, but using 6DQ6s. Antek makes some nice looking toroidals that appear to be well made and at decent prices. Maybe that is an option in this case? I understand it might not fit with the aesthetic that certain people want from a tube amp though.
Hayseed doesn't make the caps themselves. I've been using the caps for 30 years without problems before Hayseed ever sold them. I always knew they were made of discreet components. I thought the quality was fabulous. The aesthetics are great and fit like the originals. I sometimes requested custom values for my repairs. Far as I know, the person who was manufacturing them has retired.
I may be inviting some “responses” but for acoustics, I am a fan of Dennis Foley at Acoustic Fields. He has a pretty active RUclips channel, but to me it seems his services and products are based on solid , fundamental acoustic principles and engineering. The room you showed is, indeed, awful for music, including that the ceiling is so low you might not be able to do anything to fix the room.
Any idea about repairing the feet on a Micro Seiki BL-91?
Put the Western Electric Solder on Flea Bay and put the cash in your retirement fund.
Is there any way you may be able to find out where the transformer companies get their materials. I had an idea that I wanted to make my own transformers.
This is from Hayseed web site. It is a divergent and running around answer at best.
"
Does Hayseed Hamfest re-stuff old capacitors, or wind new can capacitors on old machinery?
Neither! Hayseed Hamfest uses all new materials and state-of-the-art discrete aluminum electrolytic capacitors from top brands -- the vast majority from either Nichicon or United Chemi-Con. Certain values may be supplied by other high quality manufacturers such as Panasonic, Illinois Capacitor, or Kemet.
We do not use any 'generic' discrete caps, nor do we re-stuff old can capacitors, or make old-style cans on outdated equipment.
Our capacitors are rated 105C, and ±20% for capacitance.
"
Okay, Ng. We changed it. Better?
They added this in response to my video. Update coming...
Hey Mark.. Have you tried Heyboer Transformers?
I guess I’m confusing Mark with someone else, but I was thinking that he was in the process of building up his own transformer winding company; buying another company out or something...
Sadly, shortly there after I took a job running a large technology company and it has been consuming all of my time. I ended up selling the company to a friend who is working on getting up to speed but it may still be a year or three as he has a day job too.
Audio note make probably the best capacitors for Valve amplifiers silver oil soaked myler is reckoned to be the best, but there is a lot of fakes out there so buy from the company audio note, co, uk if you want diffusers you can make your own quadratic diffusers just Google quadratic diffuser calculator.
Natural wool fleece is probably the best for absorption at low frequencies down and below 20Hz more than any other material.
Go to Heybore Transformers. Best OT source I have found.
Bummer about Magnetic Components / Classic Tone. With RUclips / Facebook having drained the life from the enthusiast bulletin boards and personal websites, I think the 30 year golden age of DIY tube gear building / repair has ended. I'm finding it difficult to get enthused about starting a new project.
"lack of transparency"?!? NO!
If there is uncertainty about a product or specifications are not specific and clear, it is up to the knowledgeable customer to ASK. You make assumptions. you get what they give you. I have always assumed the cans from all these places were stuffed.
It's up to the supplier to represent an item accurately. Stuffing is not the traditional construction and might affect performance so it's not more than logical to mention it. That said, you can sort of see it given the construction, but only if you have an in depth knowledge of components. Many users haven't and shouln't necesarrily have to.
I think people are going crazy
Vintage solder will most likely be oxidised (oxidation contaminates the joint, ATT would have thrown the stuff out as useless), so, you have get rid of the oxidation before use, a right royal PITA, why bother? Your building an amp not a submarine cable. Some folk have more money than sense....DA.
Flux dissolves oxidation unless it's really far gone.
If memory serves, you were in the process of bringing home a large amount of transformer winding equipment from somewhere in New England when you had your heart attack. Sounds to me like its time for you to start dusting that stuff off and getting ready to fill a niche. . .
Designing a listening room? Get the Rod Gervais book.
Try Hammond transformer
Buy cap cut it open
Go to Mojotone.com for transformers and can electrolytic capacitors Mark. Think they are in North Carolina.