jh6you said:
I am tired too.
btw, are you in Shanghai, China? I was there last November. Beautiful and vibrant city.
The thread is located here: http://www.diyaudio.com/forums/showthread.php?s=&postid=206052#post206052
Because it is OffTopic section, the listing is not shown as other regular threads.
9mm is the length of feedback loop (basically resistors length). I still didn't figure out how the 47Labs calculate signal path length, as looking at the arangement inside thei amp it has to be longer than 39mm. I'm claiming in my amp 120mm, which includes RCA jacks and binding posts.
Because it is OffTopic section, the listing is not shown as other regular threads.
9mm is the length of feedback loop (basically resistors length). I still didn't figure out how the 47Labs calculate signal path length, as looking at the arangement inside thei amp it has to be longer than 39mm. I'm claiming in my amp 120mm, which includes RCA jacks and binding posts.
millwood said:
I am in Pusan this month and flying back to Shanghai on the beginning of the next month. Yes, Shanghai attracts me, too, and it's the city quite different form the time 15 years ago. If you have another chance to visit to Shanghai, I would invite you to a bar I usually go.
JH
jh6you said:
I went to Shanghai multiple times. The first was in 1991 (I think I landed the day of the coup in Russia that got Gobuchev house-arrested). after that a few business trips. Would love to work there for a couple of years.
Man, you sure got that right.
1) You haven't shown that "vibrations" from, whereever, have anything to do with what you hear.
2) You haven't shown that silpads damp any more than the insulators you use. For all I know, you can be damping more with the ones you use by a tighter coupling to the greater mass of the heat sink, and getting more resolution by virtue of less smear from vibrations.
3) You haven't ruled out other possible effects such as dielectric, thermal properties, etc.
4) You quote some goobledygook from some company as support, and then accuse me of having a low threshold of acceptance. You haven't come close to reaching any threshold of making an acceptable conclusion.
Come on Peter, don't **** on my foot and tell me it's raining. This isn't a personal attack. It's not like I'm the only one questioning you here. Some of the things you are chasing, like an x mm path length vs. an x+1 mm pathlength, etc., appear to more of a reaction to cloning a company's product that got a good review, and then espoused some mysticism for it, rather than . I applaud your effort to search and try and listen. But unless you show reasonably controlled experiments, maybe you ought to ease off on the explaining, and not insist that we prove you correct.
Peter: As per usual, I'll be happy to help you design an experiment to confirm whether or not changing insulator pads changes the actual sound. That way, you can confirm (or not) that you actually hear a difference, and if so, give the rest of us a motivation to determine the mechanism.
I still want to do the fancy versus cheap cap/resistor test and I still have the necessary super-high-quality switch. My concept could easily be adapted to testing two or four gain channels with different insulators, if you can help out with the mechanics- I'm pretty good at experimental design, but will never be your equal at machining and mechanical design.
I still want to do the fancy versus cheap cap/resistor test and I still have the necessary super-high-quality switch. My concept could easily be adapted to testing two or four gain channels with different insulators, if you can help out with the mechanics- I'm pretty good at experimental design, but will never be your equal at machining and mechanical design.
pooge said:
I won't show you any contolled experiments, because I don't need to prove anything and I don't see a convenient way to carry it out. Would you like to come to Toronto?
Did you try to compare both pads yourself and came to a conclusion? If not, you are wasting the bandwith with your pointless argument.
As far as I'm concerned, I also didn't explain anything and didn't present any conclusion. I'm not qualified for that enough. I just posted my guesses and some of my findings. It's your business what you do about it.
I'm not chasing the shortest signal path. It just happens that this is a convenient way to put things together. If I quoted anybody, it was mostly for entertainment purposes.
As much as you want me to prove my claims, I can ask you to prove yours. I don't see a difference here. We went through cables make no difference threads and everybody knows what kind of people are most active in those.
I'm in exactly same position to say to you:
>>Come on man, don't **** on my foot and tell me it's raining.<<
Am I?
pooge said:
You missing my point again. I didn't want to show or prove that AO pads are better than silpads. I just mentioned that in my application, in my specific example, I had preference of one over the other. Do you get it? In that example, the heatsink mass was the same and pressure of the screw was the same. My guess was , that if I hear a difference, it may be because of different damping created by different pads.
It might be the exact opposite, in a different application and setup.
So tell me, what exactly are you after? Are you just angry that I hear more than you? If that's so, you are funny man, pooge.
SY said:
I'm fed up with the constant crap about "parts don't make difference". I don't care much for insulators as those are the only type I wan't to use, but if you have an idea for 4 resistors switching box, with different values, feel free to contact me or start a new thread. I'll make that device and we can circulate it on the forum.
This time's for real😉
Peter Daniel said:
good, finally we can prove or disprove the myth of that ellusive "resistor sound", 🙂
millwood said:
Did it occur to you that by using word "myth" you already "disprove" the resistors sound.
Peter Daniel said:
I am not aware of it.
Peter Daniel said:
I thought SY had presented one set-up. and i am sure if you put your efforts to it, you will come up with many ways to show it.
Peter: Well, let's start easy with Rs and Cs, and if you're encouraged by how that works out, we can discuss other variables- like insulators.
Peter Daniel said:
no need to insult others even if you cannot answer their questions, Peter. you know better than that, right?
Peter Daniel said:
Peter, this is what SY offered:
Please let me know if that is not sufficient and why so we can address your needs promptly.
Peter Daniel said:
not sure if I understand your point. Would you mind clarifying it a little?
Peter Daniel said:
I can assure you, Peter, that I am here to stay, much to your delight I am sure, 🙂.
SY said:
Thanks, SY, for your help. We look forward to update from you and Peter as it progresses.
Good night to all.
millwood said:
Actually I feel insulted by your ignorance and pointless persistance. Pointless, because I will not build a setup for pads testing. Will you build it? If nobody's going to do that, how can you test the pads? You can tease me with addressing my needs promptly, but the most work would have to be done by me. Only to prove to you my point? Don't you think it's ridiculous?
Peter Daniel said:
Yupp! I also tried both AO and std silicon rubber insulators in my GC, and I found that I liked the silicon rubber best. I didn't think that hard about it, I just preferred the sound that way. (My chassis is vibrating a bit.) I also preferred std rubber feet vs Pulsar Points and the like. Sounds more natural/musical to me😉
Peter Daniel said:
Peter, I have a lot of respect for your work, but this is quite un-scientific. I can follow that depending on the type of isolation pad, there will be a difference in the transmission of vibrations to the transistor. But it is too much to jump from that to "airy" or dull sound. For starters, you have to prove that this transmission to the transistor does change the sound coming out of the speaker.
You fall in the same trap as those people buying those car starter cables to connect to your neighbours car when yours got a flat battery. They invariably have a tiny copper cable with enormous isolation around it. They look like garden hose, and the uninitiated will think, wow, look at those massive cables! I'm sure my car will HAVE to start with that!
Jan Didden
/Science = the belief in the ignorance of the experts (Richard Feynman, The pleasure of finding things out).
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