PMA can be quite annoying, just like me. I get 'binned' for it and am on permanent moderation to prevent me from 'offending' anybody. Still, I soldier on, keeping my 'faith' in listening results and experience with exotic designs and products.
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PMA can be quite annoying...
I was realy anoyed by the some one asked for pictures...
I think the sameone was refered to me..
I am on this 100% with Joao
As I said Pictures talk B.. post
As he as shown me his I will have to show mine sorry if not now tomorow definetley.
As my statement that this tread is a waste of time my apolologies to the like of Jacco and such
Faund the water basin example quite good.
Pitty there is wery litle of it and a lot of braggin.
Al
PMA can be quite annoying...
I was realy anoyed by the some one asked for pictures...
I think the sameone was refered to me..
I am on this 100% with Joao
As I said Pictures talk B.. post
As he as shown me his I will have to show mine sorry if not now tomorow definetley.
As my statement that this tread is a waste of time my apolologies to the like of Jacco and such
Faund the water basin example quite good.
Pitty there is wery litle of it and a lot of braggin.
Al
delay of musical texture, I like it.... but I can't relate to it. What is it. I'm equally puzzled as Mr. Didden.
BTW Joao@AltheaMusica: You tell nothing about your background. It can be a good idea to do that because I think some of us prefer that. For me it's very good to know if I'm dealing with a student or an old geezer like Mr. Curl, Pass, Didden etc.
🙂
BTW Joao@AltheaMusica: You tell nothing about your background. It can be a good idea to do that because I think some of us prefer that. For me it's very good to know if I'm dealing with a student or an old geezer like Mr. Curl, Pass, Didden etc.
🙂
delay of musical texture, I like it.... but I can't relate to it. What is it. I'm equally puzzled as Mr. Didden.
BTW Joao@AltheaMusica: You tell nothing about your background. It can be a good idea to do that because I think some of us prefer that. For me it's very good to know if I'm dealing with a student or an old geezer like Mr. Curl, Pass, Didden etc.
I really liked your humor - so far 😡
jan didden
IMO and IME, every time you try to damp an electrical 'resonance', (rising response, peak, due to whatever-no matter it's source or cause) -you damage signal. It's a tough one, for sure. it's a case of tradeoffs, at best. That's where the ear must step in and be the final decision making point. The ole' hafler circuit thing that come along with their XL-280, design comes to mind. Nice bit of electrical design work - It made pretty numbers and graphs.
Pity it didn't do much for the sonics.
Pity it didn't do much for the sonics.
Quote:
Originally Posted by Joao@AltheaMusica
Jan
This is true regarding the electrical circuit. My answer is the same I gave Bob, I'm speaking from the delay of the musical texture...
No I that was not my intension, I only didn't like to write the same answer twice.
Sorry for the misunderstanding.
Originally Posted by Joao@AltheaMusica
Jan
This is true regarding the electrical circuit. My answer is the same I gave Bob, I'm speaking from the delay of the musical texture...
No I that was not my intension, I only didn't like to write the same answer twice.
Sorry for the misunderstanding.
delay of musical texture, I like it.... but I can't relate to it. What is it. I'm equally puzzled as Mr. Didden.
BTW Joao@AltheaMusica: You tell nothing about your background. It can be a good idea to do that because I think some of us prefer that. For me it's very good to know if I'm dealing with a student or an old geezer like Mr. Curl, Pass, Didden etc.
Musical texture means the deep interaction of the music, you can call it inner details or inner dynamic if you like. For me it's very important that the music reproduction opens your heart and mind and that the system is absent during listening to music.
Onto some education etc. I don't like that because I don't need the universal pride of price. Anyway in short...
I'm an electronic engineer of telecommunication and IT consultant. My experience in audio is around 30 years and I had the luck to have some university lecturers which worked in companies like Siemens/Klangfilm or HF engineers for Telefunken.
Musical background is that I had some turors which are university professor for music history. I play music myself and have contact to musicans.
OK, I think thats enough. Maybe I'm do not have such detailed knowledge like some others but I have knowledge of music and I'm sensitive regarding that.
OK, I count in myself as old also. Sorry, if you feel offended. I ment the young ones and the not so young ones, us.😱
Joao@AltheaMusica, good to know a little about your background.
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Per Anders
who is old or young? We are as young as we feel 🙂
If you like to get in touch for some info more please feel free to contact me by e-Mail.
)
Pictures talk...
Here are same pictures
I like analogue scopes they wont let you cheat.
The pictures have been taken on the fly meaning that the phono stage was exactly as on the system apart from the 10 Hom loading of the cartridge.
The signal going in had to be passed trough an input stage as the phono stage is set for 60dB gain
My £250 scope could not cope with the low input so I had to mess with it
Al
Here are same pictures
I like analogue scopes they wont let you cheat.
The pictures have been taken on the fly meaning that the phono stage was exactly as on the system apart from the 10 Hom loading of the cartridge.
The signal going in had to be passed trough an input stage as the phono stage is set for 60dB gain
My £250 scope could not cope with the low input so I had to mess with it
Al
Attachments
An just to make shure
Birds eye wiew of the bench.
The phono stage does much beter when connected to the cartridge and properly warmed up 12C in the loft.
sorry about messing it up with the stuff on the bread board😀
and vhen is not made to give nearly 10 v PP output
But what das it proves??????????
Someone
Birds eye wiew of the bench.
The phono stage does much beter when connected to the cartridge and properly warmed up 12C in the loft.
sorry about messing it up with the stuff on the bread board😀
and vhen is not made to give nearly 10 v PP output
But what das it proves??????????
Someone
Attachments
Digital, if used properly and with enough sampling rate, also "wont let you cheat", and give you much more accuracy than can be read from your shots.
Your phono preamp is not properly designed. The probblem is the initial jump in the square response. That's exactly the problem John was addressing. Professional designers should be aware of it and would not design a circuit with such behaviour.
Regards
I have shown the same problem, that can be seen in your scope screenshots, in this post (blue plot):
http://www.diyaudio.com/forums/anal...rch-preamplifier-part-ii-700.html#post2377958
This is one and the same thing, once seen in frequency domain and then in time domain. Unfortunately, most of phono preamps are designed without having solved this.
Measurement of properly behaving circuit attached (enlargement of the measurement that was shown recently). The only 'problem' seen is quantization noise, one can even count the samples.
http://www.diyaudio.com/forums/anal...rch-preamplifier-part-ii-700.html#post2377958
This is one and the same thing, once seen in frequency domain and then in time domain. Unfortunately, most of phono preamps are designed without having solved this.
Measurement of properly behaving circuit attached (enlargement of the measurement that was shown recently). The only 'problem' seen is quantization noise, one can even count the samples.
Attachments
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