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John Curl's Blowtorch preamplifier part II
John Curl's Blowtorch preamplifier part II
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Old 21st January 2013, 08:21 PM   #33221
Esperado is offline Esperado  France
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Somebody's else opinion (Funny, he says EXACTLY the same thing than me).
Magnetic Phono Pickup Cartridges
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Old 21st January 2013, 08:34 PM   #33222
gpapag is offline gpapag  Greece
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John Curl's Blowtorch preamplifier part II
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Originally Posted by PMA View Post
... an thus useless.
I would say pointless.
I have my share on the pollution. I won’t do it again.
Back on the dedicated threads. Thank you all

George
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Old 21st January 2013, 08:43 PM   #33223
fas42 is offline fas42  Australia
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That's a hoot and a half!
Personally, these are more my cup of tea - The Holographic Hornlet Speakers - Hammacher Schlemmer ...

Frank
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Old 21st January 2013, 09:00 PM   #33224
fas42 is offline fas42  Australia
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... Real world results are not appreciated.
Hoo boy, (sigh) ...

Frank
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Old 21st January 2013, 09:05 PM   #33225
Steve Eddy is offline Steve Eddy  United States
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Nailing jello to a wall is not easy.
Sure it is. Just freeze it.

se
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Old 21st January 2013, 09:12 PM   #33226
Kindhornman is offline Kindhornman  United States
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John Curl's Blowtorch preamplifier part II
fas42,
Those Hammacher speakers aren't much different than the tapped horns here on the diy site. A rear loaded horn is a joke, I stay off those threads as they just don't make any practical sense. The output from the cone can never be matched with the output of the horn, a stupid proposition if you ask me.
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Old 21st January 2013, 09:45 PM   #33227
fas42 is offline fas42  Australia
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fas42,
Those Hammacher speakers aren't much different than the tapped horns here on the diy site
I just loved it as a piece of visual "humour" ...

On another point, a bit off topic, but relevant to the general conversation here I always find it hilarious when someone posts a waveform from a (usually very expensive) display that "proves" a signal has a "problem", or is "perfect". One would be struggling to see anything happening, either way, more than about -40dB down; but then the conversation turns to the terrible importance of artifacts at say -120dB down. There's a whole big world between those two, folks ...

Frank

Last edited by fas42; 21st January 2013 at 09:47 PM.
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Old 21st January 2013, 10:14 PM   #33228
Esperado is offline Esperado  France
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That's make the difference between 'high end' (60dB vinyl) and 'mid-fi' (100dB CD).
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Old 21st January 2013, 10:26 PM   #33229
kgrlee is offline kgrlee
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Originally Posted by john curl View Post
I am not much in love with MM. ... bla bla .... Unlike Scott, I only use moving coil cartridges, so I optimized it for that use.
Err.rrh! Your circuit has at least 10dB of extra unnecessary noise for most Moving Coil cartridges. The choice of AD797, though inappropriate, fades into insignificance compared to the evils of YOUR poor circuit design.

Would you like to tell us which moving coil cartridge(s) you "optimised" the design for?

Quote:
It is naive to think of this design as an all-out assault on phono noise. It is a mid-range product, designed to fill a niche in the marketplace, and still sound OK.
Didn't you tell us the loony .. I mean Golden Pinnae press, caned JC2 Mk1?

Last edited by kgrlee; 21st January 2013 at 10:32 PM.
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Old 21st January 2013, 10:43 PM   #33230
Esperado is offline Esperado  France
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While, today, near everybody can have a recording studio at home, of a better technical quality than the professional ones in 1970, an affordable reflex camera body able to make movies of better definition (Look at the last Nikons) than the 70mm Panavision of the same 70s, i'm surprised by the actual poverty of the musical or cinematographic production.

We are talking about audio reproduction, here, fighting for microscopic details, but the emotion is somewhere else. I was shocked by the response of John about CDs "i don't do CDs". What kind of records can-he play, then ?
Are-we building systems to listen to systems ?
A lot of people have great knowledge, over here, and discuss about a lot of technical aspects (distortion, noise etc.) while nobody is able to give any imput on their degree of influence in the listening experience. Are we'd all gone mad?
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