john curl said:
John,
Your "us-and-them" attitude is teaching your impressionable disciples bad habits.
Anyone who disagrees with you or even asks for back-up or clarification is placed in the "them" camp (and of course that includes me). Who taught you that is the way to deal with controversy? I enjoy controversy but your cancerous brand of divisiveness is very different, and I hope you understand the difference.
I applaud people who may ask seemingly naive questions because that makes us think in responding and we often learn from that. I never answer in a condescening way. We often hear about the guy the experts forgot to tell that he couldn't do something, and went and did it. More power to that guy who maybe had the guts to ask a dumb question.
Not having a formal education in physics and being in the optical fiber transmission business, I ask dumb questions of those more knowledgable all the time. I'm not afraid to say "what do you mean I can't do that?", and every once in a while it turns out it can be done. That's the way the world works among designers from different backgrounds who show some mutual respect and patience for each other, and who try to walk in the other guy's shoes.
Bob
So many assumptions on your part.
You don't know what work I did until few months ago, you don't know with what measuring equipment I worked and what measuring equipment I have access to (though I don't own).
I'm not an electronics engineer. I stated it over and over in this thread.
I'd let others describe your attitude here.
Please re-read it. You are distorting what I wrote, in the context written.
Also, some amplifiers labeled as "mid-fi" sound better than some other amplifiers labeled as "Hi-Fi".
Since this post of yours is so much personal, assuming and quote me falsely, I'll leave it at that.
Where you are coming from is clearly seen.
Bob Cordell said:
However, others do – it was done to me in this page and to this John wrote me what he wrote.
It may be of a service to read phrases in the context written.
Joshua_G said:
And with good reason. I rarely write anything negative here, but you have taken this way far out.
If you stick to the discussion, no-one would go for your throat, but as you insist comparing apples to bananas, you get yourself in this sort of situation.
This discussion is obviously fact based, so anything that can't be backed up with facts, is off topic, and annoys the participators.
Magura 🙂
Yes. Geddes:
http://www.diyaudio.com/forums/showthread.php?threadid=109147
I believe he was testing them for crossover distortion.
My point is that the Geddes's metric is a measure of subjective quality for purposes of evaluating a system. It doesn't tell you what is wrong with the innards. It tells you you gotta go look inside or choose another system.
Bob Cordell said:
Magura said:
Magura said:
Bob
A very good post, I agree with every word.
Magura
You are so right, I applaud you.
BTW: I think its some posts from earlier today that has been deleted.
Cheers
Stinius
Magura said:
Mind you, this response towards me was for me asking what FFT is.
So, what are you talking about?
Hi Joshua_G,
My other comments were based on a previous response to my question about your previous experience. From what you had said, I shouldn't have been far off the mark. I was trying to figure out where you were coming from and presumed the best and most innocent. Because otherwise you seem to like controversy. That is sure from some of your other posts to other members.
Hi Magura,
Good to 'see' you. How is everything with you?
Very good observations BTW.
-Chris
Not true about my response to you. I very nicely explained what an FFT was, and compared it also to the analog equivalent. Did you find anything negative in that response at all? If so, please let me know.
My other comments were based on a previous response to my question about your previous experience. From what you had said, I shouldn't have been far off the mark. I was trying to figure out where you were coming from and presumed the best and most innocent. Because otherwise you seem to like controversy. That is sure from some of your other posts to other members.
Hi Magura,
Good to 'see' you. How is everything with you?
Very good observations BTW.
-Chris
Steve Dunlap said:
Steve,
Curious interpretation of what I wrote, but then again I've never claimed to be the best writer there ever was. Perhaps I didn't make my position clear.
In solid state gear, I usually look for about 200-250kHz bandwidth, minimum. I usually come in higher than that--400-500kHz. I can get away with fairly wide bandwidth because there's little RF where I live. I've not done a formal study of what's on the market, but I've got a sense that the 'average' bandwidth these days is around 100kHz. Spectral used to be the outlier in the commercial realm--possibly still is; if I recall correctly, they ran about 1Mhz bandwidth. Most others came in less, usually by quite some margin.
When I post a circuit, I either purposefully limit the bandwidth to 100-150kHz or warn people to be alert to potential RF problems. Ideally, I'd like the "DC to light" cliche, but we're getting more RF, not less as time goes on and the day may come when I have to pull things down to 100kHz. So far, I'm okay. From what you're saying, I'm assuming that you live in an area where RF isn't a problem. That's cool. But criticizing people for not meeting your bandwidth ideas is not necessarily a particularly good idea, as it could lead to fried circuits and/or tweeters, not just lower sound quality. Most people seem to think that I'm lunatic fringe for running .5MHz bandwidth. If you think that's too low, and if your living conditions permit, then by all means go for it. I'll support you when everyone else starts yammering about how crazy you are, because I happen to agree with you.
I'm not quite sure how you got the impression that I believe low THD to be detrimental to sound quality, but...my philosophy is that if I want ice and water freezes at 32 degrees, then 25 degrees is sufficient. If you feel that 10 degrees produces better quality ice, then by all means make it as cold as you like.
Grey
anatech said:
And even more - find out Joshua that the moderators are so far defending you, saving some embarrasment. A few corrosive comments after your FFT question ( mine included, and for just cause 🙂 ) were deleted shortly after posting.
GRollins said:
Don't worry, that's not the reason 🙂 I am currently running 8MHz unity gain for a 200W power amp, and nobody said anything about lunatic fringeness.
It's not worth it, Joshua. See what I mean? Next time just Wiki the topic and get up to speed, and then they can't use it against you. It just wastes bandwidth when we let them get away with it.
Hmm, this looks to me like merely another attempt by JC to get the discussion back on track. Good cop, bad cop?
Come on JC, I'd rather read "their" pointless banter.
Hmm, this looks to me like merely another attempt by JC to get the discussion back on track. Good cop, bad cop?
Come on JC, I'd rather read "their" pointless banter.
Steve Dunlap said:
What nonsense. Please show me an open loop amplifier (say rated at 50-100W) that does below 0.005% THD at high (rated)power and frequencies.
anatech said:
It's warming my heart to see a righteous friend.
Thank you for your goodwill and assistance. Now I know whom to ask technical questions.
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