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Old 13th March 2013, 09:34 PM   #8481
RCruz is offline RCruz  Switzerland
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Quote:
Originally Posted by Joachim Gerhard View Post
The Audio Research is way noisier, full, fat and stupid. Not my cup of tea and obsolete in a
minute. What version, what modification ?
Talking about strong opinions....
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Old 13th March 2013, 09:40 PM   #8482
pdul is offline pdul  Denmark
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based on simple logic, considering how many people who have buildt it by now, held up against the number of toxic complaints/praises, maybe the flaw is in the setup of those who complains?
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Old 13th March 2013, 09:47 PM   #8483
pdul is offline pdul  Denmark
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By the way. Does anybody know what happened to Benedetto? I sent him a PM two weeks ago, and still no answer?
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Old 13th March 2013, 09:52 PM   #8484
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Forget post 8478. I could not care less. When i would compare my work all day to what is out there i would not find time to eat. The amount of phono stages out there is MASSIVE.
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Old 13th March 2013, 09:53 PM   #8485
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I am also surprised that Benedetto is not there.
He has send me the layout of the pre regulator. It is ready and looks good.
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Old 13th March 2013, 10:01 PM   #8486
pdul is offline pdul  Denmark
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He has send me the layout of the pre regulator. It is ready and looks good.
Yes really, i saw it in his photobin
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Old 13th March 2013, 10:01 PM   #8487
MiiB is offline MiiB  Denmark
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Stefanoo... I could argue the same regarding your speakers your amplifiers ect ect..I could claim all you have is slow, sluggish and without any resolution, but it really makes no sense for me to do so..

All that happens here is that you create an environment where most will be against you. To be frank you have not contributed anything of value , my take on that is that you don't simply don't understand more than a fragment of what goes on in a circuit...Like Joachim said, design something, build it, measure it and than we can talk again...
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Old 13th March 2013, 10:18 PM   #8488
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Ricardo, sometimes i get a bit emotional too. I am human after all although my friends think that i am a living computer.
I will call up my friend tomorrow that has the certified lab. He measured the big Audio Research, so let´s see what the data tells us.
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Old 13th March 2013, 10:23 PM   #8489
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Default Cool down, gentlemen

Quote:
Originally Posted by Stefanoo View Post
That set up is crap!!! You are lucky if you can hear 40% of the information cut on the vinyl!

This is what makes me wonder...!!!

Again if you want a really educated critic on the paradise we can take it off line.
Conversely, if you want to continue getting feedbacks from people who don't know what the heck they are talking about..it's your choice.

I know you are a professional designer and that you know better than this!
I think the name if this forum was "Do It Yourself Audio", so mentioning
Boulder, Accuphase etc. may be a little bit off topic - unless you can tell
their specific virtues, probably in comparison to circuits in discussion here.

It may also be useful if you built one phono preamp or two and want to
share your ideas and opinion about details. We all know where to buy (or
borrow) commercial units and any result of careful comparison will be of
interest here - but again only in the light of Do It Yourself.

What do we want, how can we learn are the topics, not just name dropping
and system talk. The name of this thread is MPP - my Phono Pre - (not
Mutual Preamp Police) and it has become a lot more in the meantime.
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Old 13th March 2013, 10:36 PM   #8490
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Ones more :
What does the Paradise do different :
1 : falling distortion with rising frequency because of the transimpedance principle. This is in strict opposite to what high overall feedback designs do.
This does not come with an overload penalty ( 14dB at 20kHz ) that passive designs have
2 : very high speed
3 : very low noise, much lower 1/F noise then JFet designs so the bass is cleaner
4 : monotonic falling distortion with falling level
5 : extremely short and simple signal path. I count only 4 PN junctions.
6 : input offset can be trimmed, that also gives distortion cancelation because it is a local feedback loop
7 : DC coupled provided that the input transistors are thermally coupled
8 : On board shunt regulator designed by Mr. PSU Frans.
9 : local RC filtering for optimum transient response
10 : RIAA can be trimmed to any desired precision
11 : default RIAA values give the Böressen " Warm Slam"
12 : externel PSU can be used
13 : external RIAA can be used
14 : optional "infamous" Naumann pole
15 : input resistance variable from 10kOhm down to any lower value
16 : good industrial components used to avoid any "exotic" flavor
17 : cost efficient
18 : silver plated good quality PCP, layout by Hesener
19 : "benign" servo, much out of the signal path
20 : can be build by a semi experienced DIY amateur
21 : well documented, constantly updated building guide by Hesener
22 : German and American forum
23 : Pre Regulator on the way
24 : cost efficient group buy
25 : over 300 sets out there give tremendous feedback and practical knowledge base
............
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