AudioNervosa
Self Medicating => General DIY => Topic started by: malloy on June 15, 2021, 11:51:55 PM
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Anyone try these?
I want to try these Bussman fuses from MCRU
https://www.mcru.co.uk/product/silver-plated-bussmann-fuses-2/
Might be cheap enough per piece.
Also, these nano donuts that go on top of toroids from Mad Scientist Audio. http://madscientist-audio.com/blackdiscusnanodonut.html
Paul
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Anyone try these?
I want to try these Bussman fuses from MCRU
https://www.mcru.co.uk/product/silver-plated-bussmann-fuses-2/
Might be cheap enough per piece.
Also, these nano donuts that go on top of toroids from Mad Scientist Audio. http://madscientist-audio.com/blackdiscusnanodonut.html
Paul
Paul having gold coating is not the answer alone. It is the fusible link size and material that makes the difference. Unfortunately the right ones cost $150. Synergystic Research Orange. I have the Mad Scientist Toroids. Can send you a couple to try out if you like.
charles
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Check the size, as they are normally for UK power plugs that have a line fuse in the plug.
Probably not the standard 5x20mm or 1-1/4in x 1/4in fuse size.
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Anyone try these?
I want to try these Bussman fuses from MCRU
https://www.mcru.co.uk/product/silver-plated-bussmann-fuses-2/
Might be cheap enough per piece.
Also, these nano donuts that go on top of toroids from Mad Scientist Audio. http://madscientist-audio.com/blackdiscusnanodonut.html
Paul
Paul,
I’ve been thinking about trying fuses for a couple of years, but haven’t gotten around to it. Some years back, I mentioned fuses to a well-known manufacturer and also fuse holders as well. I told him I had never seen an upgraded fuse holder, and surprisingly, he told me he had never given it any thought. So it seems to me that we need not only a better fuse but a properly plated and treated fuse holder as well. Have you ever read anything about better quality fuse holders?
Nick
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Paul having gold coating is not the answer alone. It is the fusible link size and material that makes the difference. Unfortunately the right ones cost $150. Synergystic Research Orange. I have the Mad Scientist Toroids. Can send you a couple to try out if you like.
charles
Hi Charles,
I've heard nothing but good things about the Synergistic Orange fuses, but not the most cost effective upgrade due to WAF. Wallet Acceptance Factor. :lol: For my other amp, I'd need 8 of them...
As for the Donuts, I am interested, but how tall or thick are they? Maybe the smallest one would fit here?
(https://i.ibb.co/Lrw49WS/IMG-20190208-214500.jpg)
Paul
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Check the size, as they are normally for UK power plugs that have a line fuse in the plug.
Probably not the standard 5x20mm or 1-1/4in x 1/4in fuse size.
Good idea. I never thought about the size, just the rating.
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Paul,
I’ve been thinking about trying fuses for a couple of years, but haven’t gotten around to it. Some years back, I mentioned fuses to a well-known manufacturer and also fuse holders as well. I told him I had never seen an upgraded fuse holder, and surprisingly, he told me he had never given it any thought. So it seems to me that we need not only a better fuse but a properly plated and treated fuse holder as well. Have you ever read anything about better quality fuse holders?
Nick
Hi Nick, Haven't seen any threads about upgrading the holder as well. What do the better designed amps use? All I've ever seen are the same plastic housing ones with very ordinary-looking contacts.
Paul
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Paul,
I’ve been thinking about trying fuses for a couple of years, but haven’t gotten around to it. Some years back, I mentioned fuses to a well-known manufacturer and also fuse holders as well. I told him I had never seen an upgraded fuse holder, and surprisingly, he told me he had never given it any thought. So it seems to me that we need not only a better fuse but a properly plated and treated fuse holder as well. Have you ever read anything about better quality fuse holders?
Nick
Hi Nick, Haven't seen any threads about upgrading the holder as well. What do the better designed amps use? All I've ever seen are the same plastic housing ones with very ordinary-looking contacts.
Paul
Hi Paul,
I haven’t seen the insides of any new amps recently since our audio club disbanded in Vegas a couple of years ago. I think I’ll do a little bit of research on fuse holders and see what’s out there. I’m still curious about fuses, but if I ever brought that up at the Van Alstine forum at AC, I would get a lot of flack for it… i’m guessing I would need two or three fuses for my SET 120.
Nick
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Nick
There are five fuses. One power, two rail and two speaker fuses.
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Nick
There are five fuses. One power, two rail and two speaker fuses.
Thanks, Jack. Synergistic fuses are too pricey an experiment on an amp I paid < 1 k for..
Nick
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...if I ever brought that up at the Van Alstine forum at AC, I would get a lot of flack for it…
Some of those guys could get into an argument over whether or not they were arguing. :rofl:
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...if I ever brought that up at the Van Alstine forum at AC, I would get a lot of flack for it…
Some of those guys could get into an argument over whether or not they were arguing. :rofl:
+1 …. many times over… :lol:
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Check the size, as they are normally for UK power plugs that have a line fuse in the plug.
Probably not the standard 5x20mm or 1-1/4in x 1/4in fuse size.
I will revise my post. I looked in one of my UK style plugs and it looks like a 5mm x 20mm size slow blow fuse.
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...if I ever brought that up at the Van Alstine forum at AC, I would get a lot of flack for it…
Some of those guys could get into an argument over whether or not they were arguing. :rofl:
Oh, OK so you want to argue bout arguing?!
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OK. There are silver plated fuse holders available if desired. Malloy the donuts will NOT fit on the toroidal shown. The circuit board will get in the way. Nick I would buy [1] for power to start.
charles
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...if I ever brought that up at the Van Alstine forum at AC, I would get a lot of flack for it…
Some of those guys could get into an argument over whether or not they were arguing. :rofl:
Good call Tom, however resistance is futile if one has actually tried some. The price seems to be the issue with the deniers.
charles
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Charles,
I think I accidentally removed your post on using a Synergistic Research Orange fuse for the power on my AVA SET 120. Are there any other fuses out there that you’d recommend, or is the SR orange the best way to go?
Thanks,
Nick
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AMR
https://www.mcru.co.uk/product-category/diy-componants/fuses/
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AMR
https://www.mcru.co.uk/product-category/diy-componants/fuses/
Thanks, Jack. I’ll take a look. With the results I’ve been getting on various tweaks recently, I’m open nowadays to trying most everything… as long as it’s reasonable 💵
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Nick
I don't have any idea how it "sounds" compared to the SR fuses but it is as high up the food chain as I am willing to go for this particular tweek. Also not a fan of giving money to SR anyway. There is also an orange colored ceramic fuse from Littelfuse that is available from Mouser that sounds good to me at $10.
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Nick
I don't have any idea how it "sounds" compared to the SR fuses but it is as high up the food chain as I am willing to go for this particular tweek. Also not a fan of giving money to SR anyway. There is also an orange colored ceramic fuse from Littelfuse that is available from Mouser that sounds good to me at $10.
Jack,
Thanks for the info on the Littelfuse. Now if I could just find that PDF I saved on the SET 120 which should list the fuse values…
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Going off memory because the manuals at the other house it's 5 amp on the speakers, 8 amp on the rails and 10 amp on the IEC. I only changed the IEC fuse with an AMR because I had spares.
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Nick
I don't have any idea how it "sounds" compared to the SR fuses but it is as high up the food chain as I am willing to go for this particular tweek. Also not a fan of giving money to SR anyway. There is also an orange colored ceramic fuse from Littelfuse that is available from Mouser that sounds good to me at $10.
IIRC the audio/medical grade Littlefuse is only available in 5mm X 20mm.
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Going off memory because the manuals at the other house it's 5 amp on the speakers, 8 amp on the rails and 10 amp on the IEC. I only changed the IEC fuse with an AMR because I had spares.
Jack, It looks like a slow blow 6A. It’s quite late and there are multiple listings for fuse ratings on the back of the chassis… for tube, ss… So it finally occurred to me that Frank must have multiple uses for this chassis.
Thank goodness I’m listening to music after futzing for a couple of hours setting up Roon core on a different iMac. But finally all is well… and quite musical 🎶 :thumb:
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Nick
I don't have any idea how it "sounds" compared to the SR fuses but it is as high up the food chain as I am willing to go for this particular tweek. Also not a fan of giving money to SR anyway. There is also an orange colored ceramic fuse from Littelfuse that is available from Mouser that sounds good to me at $10.
IIRC the audio/medical grade Littlefuse is only available in 5mm X 20mm.
It’s a user friendly fuse location and I’ll pull it out of there tomorrow morning to see what size it is. Not messing with fuses this late at night…or should I say early morning 😳
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Going off memory because the manuals at the other house it's 5 amp on the speakers, 8 amp on the rails and 10 amp on the IEC. I only changed the IEC fuse with an AMR because I had spares.
Jack, It looks like a slow blow 6A. It’s quite late and there are multiple listings for fuse ratings on the back of the chassis… for tube, ss… So it finally occurred to me that Frank must have multiple uses for this chassis.
Thank goodness I’m listening to music after futzing for a couple of hours setting up Roon core on a different iMac. But finally all is well… and quite musical 🎶 :thumb:
6.25A 250V slow blow it appears to measure 6mm x 32 mm
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That is the 1/4in x 1-1/4in style slow blow fuse with glass tube if you cannot find it by metric size.
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That is the 1/4in x 1-1/4in style slow blow fuse with glass tube if you cannot find it by metric size.
Thanks for confirming that, Rich. I will be searching tonight to see what’s available in that size.