Re: Re: Off-topic but important!
The MUR110 has PIV of 100, the MUR1100's PIV is 1000.
carlosfm said:
The MUR110 has PIV of 100, the MUR1100's PIV is 1000.
Re: Fast Diodes
No of course you don't need to use them...but it sure sounds better if you do. But then again if YOU CANT HEAR the difference it certainly doesn't matter.😉
RCBandwidth said:
No of course you don't need to use them...but it sure sounds better if you do. But then again if YOU CANT HEAR the difference it certainly doesn't matter.😉
Hallo my attackers🙂!
Bad design,good design🙂))..... Diode cost just 70 cents each🙂 .Why just not use it and try🙂)))))).
Bad design,good design🙂))..... Diode cost just 70 cents each🙂 .Why just not use it and try🙂)))))).
Re: Fast diodes(the sequel)
I actually asked same question Carlos around one week ago.Than I make my own research over web,and found graphs and info about switching noise.Schottky and Hexfreds have almost no switchning noise .It is no big matter,many people can hear difference. Ichanged in my Rotel 991 AE 4700 Nichicons in +-15v supply to 10000 Panasonic and I've got huge improvement.Sound became more detailed and "stable".Than I decided to change diodes too.Let see if it helps.Anyway it doesn' cost a lot.🙂
p.s BTW I feel and hope Panasonic will trow out BG from throne sometimes.
RCBandwidth said:
I actually asked same question Carlos around one week ago.Than I make my own research over web,and found graphs and info about switching noise.Schottky and Hexfreds have almost no switchning noise .It is no big matter,many people can hear difference. Ichanged in my Rotel 991 AE 4700 Nichicons in +-15v supply to 10000 Panasonic and I've got huge improvement.Sound became more detailed and "stable".Than I decided to change diodes too.Let see if it helps.Anyway it doesn' cost a lot.🙂
p.s BTW I feel and hope Panasonic will trow out BG from throne sometimes.
AnthonyAsh said:
A logical conclusion indeed! Why does this type of basic reasoning elude so many of our members on this forum? Perhaps it's linked to the same gene that impairs their cognitive listening ability.
Member
Joined 2004
Irrational conclusion
After I am finished "Gold plating" the end caps on all of my fuses in my audio gear(lower resistivity),I will search the Internet for some "Fast Recovery Power Cords".
After I am finished "Gold plating" the end caps on all of my fuses in my audio gear(lower resistivity),I will search the Internet for some "Fast Recovery Power Cords".
Re: Irrational conclusion
You are not right🙂.For lowest resistance better silvering🙂)).Actually I've done silvering in my life,because I was funk amateur 🙂))).But it was for short wave tranciever🙂))). But silvering also can be positive for low-signal circuits&paths,especially for grounding.I'm serious.Some noises is in Mhz frequencies,we definitely can't hear it,but some Operational Amplifiers can 🙂.Anyway it is just suggestion🙂
RCBandwidth said:
You are not right🙂.For lowest resistance better silvering🙂)).Actually I've done silvering in my life,because I was funk amateur 🙂))).But it was for short wave tranciever🙂))). But silvering also can be positive for low-signal circuits&paths,especially for grounding.I'm serious.Some noises is in Mhz frequencies,we definitely can't hear it,but some Operational Amplifiers can 🙂.Anyway it is just suggestion🙂
Re: Irrational conclusion
Is it possible that these superduper rectifier diodes have better specs in other areas besides lightning fast switching? Is switching noise of no concern to the performance of the rest of the circuit in an audio application? I have no knowledge in this area so a simple yes or no will do for me. However, maybe a more thorough answer is of intrest to others in this discussion.
ROFLOL 😀RCBandwidth said:
Is it possible that these superduper rectifier diodes have better specs in other areas besides lightning fast switching? Is switching noise of no concern to the performance of the rest of the circuit in an audio application? I have no knowledge in this area so a simple yes or no will do for me. However, maybe a more thorough answer is of intrest to others in this discussion.
... if you can't hear ...
" I can hear differences " is key claiming, but often have it the same " weight " as " I know to hear growth of grass " 😀 .
" I can hear differences " is key claiming, but often have it the same " weight " as " I know to hear growth of grass " 😀 .
Re: ... if you can't hear ...
We are all alchemists,experimentators here or not? 🙂 .I have good education and excellent physical background.According for quantum mechanik vacuum is not emptiness,but a substance with many virtual particles. Do you have explanation of this? I even haven't.But the trick is sometimes vacuum can generate energy and it is monitored🙂.Not joke. Same thing with diodes,may be nothing,may be something.Let's try.If doesn't workI will just not buy such diodes (shottky,hexfdes)for normla power supplies.But if it is work it will be my little discovery🙂.Nothing else,nothking less🙂
Upupa Epops said:
We are all alchemists,experimentators here or not? 🙂 .I have good education and excellent physical background.According for quantum mechanik vacuum is not emptiness,but a substance with many virtual particles. Do you have explanation of this? I even haven't.But the trick is sometimes vacuum can generate energy and it is monitored🙂.Not joke. Same thing with diodes,may be nothing,may be something.Let's try.If doesn't workI will just not buy such diodes (shottky,hexfdes)for normla power supplies.But if it is work it will be my little discovery🙂.Nothing else,nothking less🙂
Hello!
Interesting thread, I must say!
Too bad I didnt read it a few days ago...
Well, to get to the point. I change the op amps in my
CDP, a denon dcd-1015 by the way, from NE5532 to
OPA2604 and I also did some bypassing from V+ to V-
using some 4,7µF tantalellyts and some 0,15µF wima...
I find the result to be, well... Better! I cant really put my
finger one whats better. It just sound more relaxed
and warmer... Nicer to listen to!
So how is the 5532 comparde to 2604?? Was it perhaps
the bypassing that made the difference? Maybe I should
change back to the 5532 and listen how they sound
with the same bypassing...
//Gustaf
Interesting thread, I must say!
Too bad I didnt read it a few days ago...
Well, to get to the point. I change the op amps in my
CDP, a denon dcd-1015 by the way, from NE5532 to
OPA2604 and I also did some bypassing from V+ to V-
using some 4,7µF tantalellyts and some 0,15µF wima...
I find the result to be, well... Better! I cant really put my
finger one whats better. It just sound more relaxed
and warmer... Nicer to listen to!
So how is the 5532 comparde to 2604?? Was it perhaps
the bypassing that made the difference? Maybe I should
change back to the 5532 and listen how they sound
with the same bypassing...
//Gustaf
Re: ... if you can't hear ...
Tell us if you hear an improvement, some of us actually have an open-minded approach and may want to try them. 😉. Don't forget to have your tin ears gold plated too.
Indeed it is the same weight if you can't hear either! Of cousre the differnce between diodes is easy (for some of us) to observe.
RCBandwidth said:
Tell us if you hear an improvement, some of us actually have an open-minded approach and may want to try them. 😉. Don't forget to have your tin ears gold plated too.
Upupa Epops said:
Indeed it is the same weight if you can't hear either! Of cousre the differnce between diodes is easy (for some of us) to observe.
Member
Joined 2004
Still Waiting...
Hello:When will you explain (in detail please)why a fast recovery diode will sound better when it is used as a rectifier in a power supply?.Exactly how is the sound changed,is it louder?,is it less distorted?,is it more 3-dimensional?,is it all of the above?....Do you use any specific Test equipment in your sonic investigations besides your golden ears?.When you answer my specific questions then all of us will have learned something new.
Hello:When will you explain (in detail please)why a fast recovery diode will sound better when it is used as a rectifier in a power supply?.Exactly how is the sound changed,is it louder?,is it less distorted?,is it more 3-dimensional?,is it all of the above?....Do you use any specific Test equipment in your sonic investigations besides your golden ears?.When you answer my specific questions then all of us will have learned something new.
I haven't tried using fast switching/soft recovery diodes but I can't claim they don't make a diff. I procrastinated increasing the PS caps of my GC until one day I did and the HF started to sound really bad (very congested with low resolution and fuzzy too). Adding snubbers cured the problem (bypassing with smaller caps didn't work at all). Does it mean snubbers are not needed, either? They were mandatory in my system. You can't see it on the scope either. Later change the PS caps (mix of very low ESR and normal ones) and the snubbers were still needed though the diff. they made was not as huge, but still very noticeable. So guess what, snubbers on every amp I make. Well I'm almost convinced that the diodes would effect the sound of the amp to certain degree if they are part of the same PS that was so much affected by the snubbers. Most likely in the HF range, having in mind injecting 120Hz spikes in the PS due to the charging currents of the PS caps, though I don't know exactly.
Anyway, don't believe everything you hear out there, but keep an open mind and if it makes a diff. to you use it. Don't let your limited knowledge/education (we all know so little) and ego keep you from listening to a good sounding system! I'm an EE, so I had to get rid of a lot of preconceived ideas before I decided to try those ludicrous proposals of swapping Op amps in the audio track. Any op amp can do 20Hz to 20kHz, right? You'll be missing a lot in this life if you think that way...🙂
Greg
Anyway, don't believe everything you hear out there, but keep an open mind and if it makes a diff. to you use it. Don't let your limited knowledge/education (we all know so little) and ego keep you from listening to a good sounding system! I'm an EE, so I had to get rid of a lot of preconceived ideas before I decided to try those ludicrous proposals of swapping Op amps in the audio track. Any op amp can do 20Hz to 20kHz, right? You'll be missing a lot in this life if you think that way...🙂
Greg
Member
Joined 2004
Any op amp can do 20Hz to 20kHz, right?..........I do not recall making any comments regarding differences in sound quality with diffent op-amps Greg.Certainly an Op-amp would have more of a sonic impact than a rectifier diode,can we agree on this point?.
RCBandwidth said:
I was making those statements based on my limited knowledge (I still don't know why one Op amp sounds so diff. from another, but they do)and big ego until I tried it. Very humiliating experience. I became instantly an open minded person. Scares me to thing that I could have been still yapping out there and making full of myself. I don't believe everything I hear and some mods don't make an audible diff. to me, but I'd never totally discard them as a nuisance or possibility in some specific cases or in someones system if they have sensitive enough hearing. What amazes me the most is people trashing proposals/modifications without even trying it themselves. "Things are not always what they seam!" a quote that I'll never forget.
Greg
To finish my post above... Mind you I'm not religious, rather, spiritual person, but the following makes a lot of sense and it's quite relevant here too:
"The smartest thing the devil ever did was to convince people he didn't exist."
Greg
"The smartest thing the devil ever did was to convince people he didn't exist."
Greg
Re: Still Waiting...
Quite frankly the owness is on you explain why you like noisey/slow diodes. Feel free to read and quote all the white papers you want.
No you didn't but I suggest you reread Greg's original post, as your response really ba$tardizes the point. He was making a not-so-subtle reference to the type of simplistic closed-minded 'black and white' mentality that many people (perhaps even you some day) are able to evolve beyond.
RCBandwidth said:
Quite frankly the owness is on you explain why you like noisey/slow diodes. Feel free to read and quote all the white papers you want.
RCBandwidth said:
No you didn't but I suggest you reread Greg's original post, as your response really ba$tardizes the point. He was making a not-so-subtle reference to the type of simplistic closed-minded 'black and white' mentality that many people (perhaps even you some day) are able to evolve beyond.
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