Sound Quality Vs. Measurements

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You get bored? That'll be the day!

Richard, NOBODY here even knows what it means to be really bored, I suspect. 2-3 days of loitering about and we get the shakes. By day 3, we're all good junkies, looking for our soldering irons for a fix at something. Or we just brainstorm. Or whatever, but we do NOT sit around idle.

Hear! Hear! I have been in a period where I thought I was a deviant - why couldn't I just hang around doing nothin' like everybody else. Now I know better (though some would still call me deviant, but that's a story for another forum).

Jan
 
Spent a lot of time in Curaçao and Aruba ......

Recommend them ? I always fancied going to Baja California and the Catalina islands . No idea why . I do electronics the same so that should explain it . I went to Madeira once . It is a mini paradise . Somehow it didn't work . Perhaps the people there are not the happiest ? Cuba is the opposite . We know they are not happy , but the island works . Every Yank you meet there is a Canadian ( most Brits mix them up ) . I understand Cuba will soon be open again to the USA .
 
Hear! Hear! I have been in a period where I thought I was a deviant - why couldn't I just hang around doing nothin' like everybody else. Now I know better (though some would still call me deviant, but that's a story for another forum).

Jan

Mr Lamborghini said the day you stop working you die . His tractors were the cheapest in Italy and very well made . He was no idiot . It all started due to a quality issue with his two Ferrari . The parts from the tractors fitted and worked better . Mr L went to see Mr F who kept him waiting 2 hours and said he Mr F knew better . 18 months latter the very angry Mr L produced his most beautiful gentleman's sports car .

Ironically I had the same issue with a Toyota . 30 000 miles and clutch plate cracked . We bought an aftermarket upgrade part at a much lower price . This was not a stated upgrade , just how the company does things so as to please customers . It came in the usual white box with no mission statement of excellence ( it would if hi fi ) . How can this happen ?


My old boss always calls idiot products as being made by the Yaksahumi Cable Company . I suspect Yaksahumi have perfected cryogenics at - 275 K and use uranium plating to 67.3 microns . The best idiot product I heard of was PVC tubes filled with mercury as speaker cables . The German guy who told me said he was happy to take the business . I said platinum electrodes would be needed, the customer didn't know that . The health and safety issues are not worth discussing . The punchline was they sounded awful .
 
So long as it's not OB. :D

That's a red rag if I ever saw one . Colleen likes my Maggie's . Me thinks build her some OB speakers . Colleen says they look awful . I now think the Maggie's will be pensioned off to chez Colleen .

It strikes me the one very bad thing about trendy OB is the baffle is too wide . If the baffle is folded without having parallel sides surely it must be the best of all worlds ? If the reflected waves always send the energy backwards more should be won than lost?. As few do this these days it must have some very fatal flaw ? I am starting to think 4 feet high , 16 inches wide . 3 foot side baffles . Still OB .

If the flaw is it is colouration why not have some damping at the rear ( long hair wool in a net ) . I think there was a design called a Boffle that attempted energy calming like a harbour for boats .
 
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I am in a taxi - all beat up shocks, no head liner --- a thoroughly trashed vehicle.... driving down a wide blvd -- 4 lanes.... no traffic lights and plenty of people walking around..... there is a dead person near the curb..... he/she had the presence of mind to open their arms and face the east and then fall flat on their face.. dead.... got covered with a thin sheet. The city keeps going about its business.... seems natural to them.... keep working/moving/learning/sharing til you drop one day.

-RM
 
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I just sent this to someone . It might just amuse you ? We Brits are different and this is encapsulated in Peter Cooks brilliance of how we behave as a nation sketch . Forgive if this brakes any rules ? 11+ was the entrance exam . " Grammar schools " were strange elitist schools that competed with the private schools ( oddly called Public Schools ) . In truth Grammar schools were our better schools as far as engineering was concerned , not the doing so much as the tools of leaning to do the job . Loved by no one and totally excellent . UK shoots itself in the foot with both barrels yet again when getting rid of them . Dvv , I suspect you went to a schools like this in Somerset ? Did you ever go to Bream Down ? Totally ruined now . I was there in 1969 with the Scouts .


UKIP wants to bring them back ( UK not very nice party ) . Kent still has Grammar schools . Maybe Belgium and Holland cause envy in nearby Kent ? Belgium has an excellent education system although hard on the kids . Strange as everyone treats Belgium as the underdog nation . Scotland also has first class education . People complain about my English etc . Basically I sat at the back of the class pleasing myself ( no , not that ) . I had to buy books to teach myself so as to pass the O levels . I came top in Maths for my group . All self taught . I had 99.5% for course work at college for maths . Dreadful at it now .

Knight School


The lights come up to reveal two shabbily-dressed characters in caps eating chips at a cafe table adorned with a bottle of HP Sauce.
Dud: Did you ever go to Grammar School, Pete?
Pete: No, Dud, I never went to Grammar School, Dud.
D: Nor me neither, Pete. I never went to Grammar School. Tell the truth, I was a bit of a dud at school.
P: Dud by name and dud by nature, eh? Only joking, Dudley. Since you never went to Grammar School & I never went to Grammar School neither, that makes two of us, don't it, Dud?
D: With arithmetic like that, I'm surprised you didn't take the eleven plus by storm.
P: The eleven plus is a more rigorous exam than that. The eleven plus is a very rigorous exam. It's noted for its rigour. Children come staggering out saying, "Oh mummy, what a rigorous exam".
D: That's as may be, Pete. But what I really wanted to know was ... er
P: Well, out with it, Dud, what did you really want to know, Dud?
D: Er ... what's grammar, Pete?
P: What's grammar? Grammar is what they teach you at Grammar School, Dud.
D: So you don't know what it is, either, seeing as you never went to Grammar School?
P: I learnt what grammar is later on, Dud. I learnt it at night school.
D: Knight School? I thought knight school was for people who wanted to be knights. You know, jousting, chivalry, courtly love and stuff. Like, before you go up to Buckingham Palace to be dubbed a knight, you have to show the Queen your diploma from knight school, or the people in charge would chuck you out. No diploma, no knighthood. Fair dos, I'd have thought.
P: Oh, get real, Dud. That was all very well in medieval times. But you can't expect the modern knight to spend his time tilting at the quintain, singing roundelays and wearing ladies' favours, can you? They're very busy people, modern knights. They sit on committees. They join boards of companies.
D: Really? But surely they'd only become directors of companies what had a round table in the boardroom?
P: In these modern times, Dud, the shape of the table is immaterial. Any old table will do, provided the fee covers the expenses of a knightly lifestyle.
D: Oh dear, things have certainly changed a bit since medieval times. But I suppose our modern knights have to be properly trained if they're to remain on top in the increasingly competitive world of global chivalry. The thought of a lot of unqualified knights-errant wandering around looking for dragons to slay - well it doesn't bear thinking about, does it?
P: Nah, doesn't bear thinking about. The ruddy dragons would run rings round them.
D: My thoughts exactly. The ruddy dragons would run rings round them. And then where would we all be?
P: Precisely. ‘Course, nowadays, the Common Dragon is a protected species. It needs preservation from knights, not persecution by knights
D: Or by day.
P: Very droll, Dudley.
D: It's all very well having "Save the Whale" campaigns - what about a "Save the Dragon" campaign?
P: Quite right, Dud. By the way, did you know that the whale is not actually a fish?
D: Not actually a fish?
P: No. It's an insect.
D: An insect? Are you sure?
P: My little joke, Dud. ‘Course the whale's a fish. Everyone knows that the whale's a fish. As we were saying, about knights and such ....
D: .... Yes. What we need is not just quantity of chivalry but quality of chivalry.
P: Now you're talking! Yes! Sustainable chivalry.
D: A minimalist approach to knighthood.
P: Less courtly love is more courtly love.
D: A white knight is the new Black Prince.....
P: Appropriate technology for jousting.
D: The Crusades to be covered by a UN Resolution.
P: E-mail, not chain mail.
D: The right to roam over feudal domain names.
P: Recyclable broadswords
D: Environmentally friendly thumb screws.
P: Biodegradable chastity belts! Renewable virginity!
D: Now you're talking, Pete!
P: .....Hang on, Dud, we're getting carried away. You wanted to know about grammar, not about knights!
D: But before we quit jousting, Pete, I got to tell you this joke. You'll love it. There was this knight, see, all dressed up in armour, right? Stop me if you've heard this before.
P: I will, Dud, I will.
D: So this knight, he goes up to the reception desk of this hotel, OK? And he says to the geezer behind the desk "Have you a room"?
P: This isn't that Pink Panther joke is it, Inspector Clouseau asking "Have you got a room"? - ho, ho, ho?
D: No, no. Listen. He says "Have you got a room"? And the bloke says, "For how long, sir"? So the knight says, "Just for one night". Then the geezer behind the desk asks "And for how many people"? And the knight says "Just for one knight" And the bloke behind the desk says "You just told me that - but that wasn't what I asked you." And they got in right muddle (Dud begins to convulse with mirth) - took ages to sort out. Geddit? "Just for one night". "Just for one knight". Yes? I thought you'd like it.
P: The grammar, Dud, the grammar.
D: Quite right, Pete. Tell me about grammar, then.
P: OK. For example, this is a pronoun.
D: What is? I can't see a ruddy thing.
P: ‘Course you can't see a ruddy thing, Dud. If you could see a ruddy thing, it would be a ruddy concrete noun.
D: What's concrete got to do with it?
P: Listen. The word "this" is a pronoun. A demonstrative pronoun.
D: A boring little word like "this"? Demonstrative? You're joking! I mean if it was a word like "hysterical" or "heebie jeebies" - well, OK, that would be demonstrative. But "this" - demonstrative? Do me a favour!
P: Keep your shirt on. No need to come over all demonstrative with me, Dudley. Forget pronouns. We'll do prepositions.
D: Oh, I know about prepositions. One time at Southend, a bloke made an indecent preposition to my Aunt Dolly.
P: Let's keep your Aunt Dolly out of it, shall we? She always lowers the tone.
D: Not only the tone, what my Aunt Dolly lowers - know what I mean?
P: May I suggest we dispense with these somewhat lubricious ambiguities?
D: Do what? Anyway, what's a preposition, Pete?
P: They're all them little words what tell you the relationship between a verb and a noun, or a noun and a noun. These little words can determine the entire meaning of a sentence.
D: You've lost me already, Pete.
P: Here's an example. Listen. "We are having beans for dinner".
D: No, we aren't, Pete. We've been eating fish and chips. You want to go easy on beans, Pete. They can talk back to you something terrible.
P: No, no! Listen carefully. "We had beans for dinner". Compare that with "We had beans to dinner".
D: Now you're getting silly, Pete. You can't go around inviting beans to dinner. You'd be off your rocker. It would get out. People would talk, if you started asking beans round to dinner.
P: I beg to differ, Dud. I distinctly overheard a bloke the other day saying "You must come round for a spot of tiffin, old bean". I rest my case.
D: (looking around & under the table) You didn't bring a case in with you. But on this bean business, you must admit that it would be very awkward, turning to your neighbour at the dining table and finding yourself looking at a bean.
P: Well, yes, the prospects for conversation with a bean would be limited. The opportunities for wit and repartee, with a bean, would be severely constrained.
D: Worse than that, Pete. Specially if it was a French Bean. The language barrier, apart from anything else, would significantly inhibit effective two-way communication.
P: Or a Runner Bean. Might dash off half way through dinner. Very embarrassing for the host. And you'd have no-one to talk to at all on one side, for the rest of the evening.
D: Or a Chilli Bean. A really chilly bean could be a very frosty dining companion. You'd end up acting all chivalrous and offering to wrap your jacket round it. And who knows where that might lead?
P: Or a Broad Bean. I've nothing against fat people, but I wouldn't want to sit next to a really broad bean. Very cramped it would be, when you're trying to eat.
D: Or a Butter Bean. Potentially disastrous. Imagine how you'd feel if you absent-mindedly spread one of your fellow diners over a piece of bread.
P: Doesn't bear thinking about. Don't take me there, Dudley.
D: I won't, Pete, Doesn't near thinking about, does it? Same goes for grammar, in my opinion. If grammar is what gets you talking to vegetables at meal times, I'm against it. And I'm sure these chips agree, don't you, chips?
P: Er, Dud - jolly good chaps, those chips - but they can't talk you know.
 
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I think this was sold for £134 million recently . Morpeth near Scotland my happy place . £69 000 for a recently restored 3 bedroom house . Where I live £500 000 is the average . Goodness knows how I did it . I am thinking of moving as head office is Switzerland anyway . The shed in the garden research lab can be anywhere . UPS does the rest . Limoges in France would be my choice ( £20 000 = house ) . Colleen hates France . It's a Birmingham v France thing . She has A Level French so no incompetent .

5 bedroom flat for sale in One Hyde Park, Knightsbridge SW1X - 17064366 - Zoopla

Knightsbridge . I think this word is the longest group of consonance in the English language , ghtsbr .
 
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Up to, or better than nominals specs. Not one item below specs, which are reasonable, not outlandsih, although for that time (1979-1982), I suppose they were well above the norm in their price class.

At first, I thought it was spitting at me because the electrolytic caps were 30+ years old and probably way off nominal. So they were repalced, all of them, with identical values, by caps from Fisher & Tausche and BC Components (which is itself owned by Philips, I am told).

This caused the sound to come to better focus, but it was still spitting, not as shrill as before, but still wrong.

So this is where it could get interesting. If an amp measures fine, but sounds harsh, then this kind of device may show us what is wrong with our measurements. Or could it be that it is something that hides in standard FFT measurements?

Have you closely looked at the waveforms in the time domain?
 
go nuts being wealthy (bored)

Last I heard, the majority of lottery winners go shopping, sniff coke, and throw parties till they're flat broke.

I've met a few members of the wealthiest family here, good for $30+ billion. Some work for the company, some don't, but they all lead inconspicuous lives, and none hang around in sea side resorts all the time.
The father of a friend never worked a day in his life, he spends most of his time making wooden furniture. (quite good at it too)
In the last home they moved to, a side had to be excavated to make an opening in the wall, to get the huge combine woodworking machine into the basement.
 
I am in a taxi - all beat up shocks, no head liner --- a thoroughly trashed vehicle.... driving down a wide blvd -- 4 lanes.... no traffic lights and plenty of people walking around..... there is a dead person near the curb..... he/she had the presence of mind to open their arms and face the east and then fall flat on their face.. dead.... got covered with a thin sheet. The city keeps going about its business.... seems natural to them.... keep working/moving/learning/sharing til you drop one day.

-RM

I sent this to Colleen . Irony is she said it happened to her in London in the
past . Guy was dead overnight and no one did a thing . It happened outside her door as she slept . I hope she rules Vietnam out . I now have to play reverse psychology with her . Thanks for posting that . I needed it told to me . The bit of turning to the east is my fear . Was in Tunisia a year ago . Already things were uneasy . To my surprise one of the best wines I have ever drunk was there . A French legacy now run with Italian help . £10 in restaurant price , they looked a bit shocked when we drank two bottles for lunch , 3 would have been OK . A Grenache Rose . The French did us a favour there as they are more tolerant of us infidels . As far as I know to drink means not going to Mosque as the only punishment .

Sri Lanka , 4 Star all inclusive 10 days . Direct from Heathrow ( Turkish airlines ?? ) £1045 . Not bad . Hotel is good on Trip Adviser . Malaria thought low risk . August 23 rd . As it is near the Equator I doubt the temperature changes much ? Monsoon perhaps ?
 
So this is where it could get interesting. If an amp measures fine, but sounds harsh, then this kind of device may show us what is wrong with our measurements. Or could it be that it is something that hides in standard FFT measurements?

Have you closely looked at the waveforms in the time domain?

Not yet, I haven't. At this time, I'm compiling a list of to-see-how things.

Perhaps one or more of the transistors is leaking inside? I know that's VERY rare, but I lived through that once already. Simply changing a transistor for the same type but new cured that one, a long time ago. Chances are it will be the input stage trannies.
 
The OB , is superior to the box in many ways, especially in sizing instruments and sense of space, they are sensitive to and suffer from proximity effect, coloration becomes obvious , so you need room to get them at their best. This also makes it difficult to do speaker A/B testing...

The pic i posted on the 4 pc system is an OB design.

I find linesource(dipole) speakers to be superior to all , imaging , sizing , space , transient response, dynamics , better in everyway , line has to be at least 50 inchs long for best results, they only lose out to dynamic speakers when it comes to percussive energy and amplifier loading ...

Small Silly amplfiers , hated them since 1972 , always had big amplifiers, never had one let the smoke out , well Yet ..:)
 
Come on DVV switch your computer off and build some OB . Bet yours would be better than mine ! Now that's my red rag to you .

I am tempered to gut the Dynaco's and see if they had it in them to be better . Won't uses them much otherwise . The 15 inch bass units were only $100 the pair . They are far from being rubbish

No way, Nige. There is no way for me to convey my satisfaction with my current speakers, they are literally 100% stisfactry to me.

I'd be a fool to waste time and money trying to beat what is practically perfect for me.
 
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