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Old 12th July 2012, 12:44 AM   #6191
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Both channels are working, right away !
Not one single components was changed or substituted. No oscillation, i have not even stuffed the optional ceramics. I use only 10% Hfe matching and BCs from several makers,
wildly mixed. This is really fool prove. I am very satisfied.
RIAA has a certain character that can explain partly what Hesener heard. Level is up 0.75dB at 20Hz and levels out at 300Hz, then from 3kHz on there is a small rise, amounting 0.25dB at 20kHz. This stage should have slam and crispiness but not so much that it is not accurate any more. I keep it that way but mathematical artists like Ricardo can tune the circuit to dead accurate if desired. Keep in mind, as i told you before that RIAA precision is somewhat dependent on level. That has to do with the slew limit of the circuit. I give you more details tomorrow and will also listen.
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Old 12th July 2012, 12:58 AM   #6192
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Concerning dynamic range the circuit throws around plus-minus 15V P-P so overload is unlikely. The circuit is fast without cascoding of the input stage. It tracks my anti RIAA to over 300kHz, there is the null in my anti circuit. I also tried Heseners anti RIAA. He seems to have used the values for the MM version. Hesener i need the circuit you build and then i can give you the modification that is necessary for MC.
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Old 12th July 2012, 04:00 PM   #6193
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Today i listened for the first time to the Paradise R2. WOW! this is the real deal. It is very quiet, more quiet then i can remember the first version was although i play everything right in the open without cabinet. I use the Opus Magnum Preregulator so i run in complete double mono. That shows up in enormous channel separation. The sound is very big, high, wide and deep but extremely well focussed. There is also wonderful depth perspective, some sounds come near to my head and others sound quite far away. My room has some problem to delineate sounds that come from far away so in a room deeper then mine ( 4.35m ) you will get an even deeper soundstage. Bass is exceptional, already noted by Hesener. It does not only have dramatic slam but is also clear, deep and bouncy without sounding overblown. Fundamentals are well fleshed out and musical. Presence range is perfectly linear and low in coloration and high in resolution. The treble is slightly crispy but very low in distortion. The whole effect is very wide band and dynamic. There is a lightness of tone that is hard to describe. Sound is liquid, maybe not as much as from tubes or Fets but the overriding sensation is like a light spring wind with perfect temperature. I highly recommend that we start the group buy soon.
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Old 12th July 2012, 04:10 PM   #6194
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Quote:
Originally Posted by Joachim Gerhard View Post
I highly recommend that we start the group buy soon.
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Old 12th July 2012, 04:18 PM   #6195
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I owe you a pair of boards Peter and you will get them.
Your INA217s are in good use now.
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Old 12th July 2012, 04:24 PM   #6196
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Good to see them on duty.
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Old 12th July 2012, 04:33 PM   #6197
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Btw;
i've ordered by accident some real expensive ZD12/!.4W.
Is there anybody interested out there ?
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Old 12th July 2012, 05:15 PM   #6198
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Here is my current setup.
Turntable : Spiral Groove SG1 with Centroid arm and Lyra Titan i cartridge.
Phonostage : Paradise R2 double mono with Opus Magnum Preregulator
Line Preamp : Suesskind prototype
Power Amp : 20W Class A simple symmetric ( Lazy Cat ) modified
Speakers : Suesskind Tangram
Wire : Nordost and Wire-World
Power Filter : Hensler Skin Effect Surface Filter, Nordost Q Box
Attached Images
File Type: jpg Paradise R2 test1.jpg (357.3 KB, 242 views)
File Type: jpg Paradise R2 test2.jpg (358.1 KB, 231 views)
File Type: jpg Paradise R2 test 3.jpg (312.1 KB, 228 views)
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Old 12th July 2012, 05:20 PM   #6199
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No Cats nor Children allowed.
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Old 12th July 2012, 06:11 PM   #6200
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Both my wife and my 18 year old boy are well trained to not destroy anything. My son can even put on a record.
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