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Old 17th December 2009, 11:46 PM   #381
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My browser (Safari) can not open that link.
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Old 17th December 2009, 11:50 PM   #382
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Quote:
Originally Posted by Joachim Gerhard View Post
Yes, Salas, same idea but i whould try DC coupling. Anyway, i had never dreamed that i could make the Hiraga that good sounding. I really go through a period of simplification right now. Because i will not work on phonos for the next days i will look if i can steal time for your meaner shunts or are the minor shunts ?
That B1 tail works in SE, taking advantage of the previous stage DC level to center. Its an SE phono. Simple is good, but make no simpler than necessary, as some German physics guy said once. Meaner first, and then step down to savor the changes. Cross fingers they will even work in the first place.
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Old 17th December 2009, 11:53 PM   #383
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My browser (Safari) can not open that link.
Go back and press on the link again. I fixed it. Loud festival. You can see the line arrays on the intro video too. Its done in MesseKassel.
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Old 18th December 2009, 12:12 AM   #384
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Well, i will not go simpler then the Hiraga but plan to improve it even further. It has low level detail in the sound that many more complicated circuits do not have. I am now convinced that conventional high feedback in the input stage of a phono amp is not the best solution. I got -110dB distortion exponentially falling in my low Z MPP just by careful design. I am very dedicated to make my high Z MPP good. I think i found a good compromise there. The icing of the cake would then be a symmetrical with low noise and fully symmetrical RIAA. The symmetric circuits i see here have still some unsolved common mode problems. I would build that circuit than with REALLY good components like wet Tantal, Teflon caps, Naked Z foil and so on the way i learned in the High Tech industry where performance and reliability was all. Well think about one year more of research. I am dedicated to build my dream stage because it simply does not exist. I would be much to expensive to make commercially. I think DIY can be better then commercial when i see some fine examples here. The High End is in a bad state. Everybody is confused because everything is great. It is really easy to get good reviews if you have the cash for advertising and socialising. This is so much fun here then my day job. And i have luck. I can more or less design what i want but there are still so much compromises to make.
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Old 18th December 2009, 12:16 AM   #385
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DIY is a breather, isn't it?
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Old 18th December 2009, 12:17 AM   #386
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ok, it is that disco festival. i m to old for that but for the young people, great !
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Old 18th December 2009, 12:21 AM   #387
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The professional speakers industry is very learned. Impossible tasks to meet and combine. Plus mechanical integrity, rigging, the real McCoy. Those arrays do classical as well. No creative plumbing by using ''planar wave'' guides for compression drivers. Flat elements. That is why they are rigged straight in the intro vid.
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Old 18th December 2009, 12:27 AM   #388
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my first "real" job, i mean with payment was in DIY in 1981. I was always a DIYer by heart. Just did not find the time. It is so much more satisfying to do everything myself. I even have an idea for a DIY resistor and i have a really fantastic idea for a coil. I was at Mundorf, ETM and Intertechnik and even for money they where not prepared, or able, or interested to make it. This busyness (High End) is very conservative although everything is High Tech of cause. I thick front plate is much more important then an innovative circuit when a 25 cent op amp can do the job just fine. Put an NE5534 in a potted case, bias it into class a and it would pass all Audio Precission test stations in this world. Its that easy to make something that measures near perfect but would it sound like music ? maybe
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Old 18th December 2009, 12:30 AM   #389
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See about taking the graphite out of HB pencils to make loudspeaker crossover resistors then.
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Old 18th December 2009, 12:31 AM   #390
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I agree, i read professional magazines and the standard is high for really affordable prices still i find most life concerts to loud, to compressed and too distorted. There are few exceptions. For example Steely Dan had great sound in Hamburg.
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