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Old 27th December 2011, 11:17 PM   #7081
Salas is online now Salas  Greece
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Quote:
Originally Posted by orelli View Post
Anyone compared this phono preamps? I've the EB320, and I've a dubt:
to make the Salas one or to supply the Borbely one with 1.2R.
Any suggest?
Had one made for a friend who has a Zanden 1200S. He took it out and uses the simplistic, says he prefers it. His cart is Clearaudio Goldfinger Statement. You can see the orphaned Zanden PSU on the floor. About EB320, haven't chanced on any.
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Old 27th December 2011, 11:37 PM   #7082
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I had one EB320 for some time and than I built the simplistic with V12 and this one is much bolder and spacious.

With the V12R is even better providing a wider soundstage tempered with just the righ amount of presence and attack.

In fact I compared it with numerous high end machines and I did not find anything near its ability to present high definition with sweetness.
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Old 28th December 2011, 04:08 AM   #7083
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Originally Posted by df_genius View Post
I've had a look at my J-fets and I have the following in higher values:

8.3-8.5mA - 3
8.6-8.8 - 6
8.9-9.1 - 10
9.2-9.4 - 14
9.5-9.7 - 14
9.8-10 - 7
10.1-10.3 - 14
10.4-10.6 - 15
10.7-10.9 - 19
11-11.2 - 6

So it looks like a design that uses 10.7-10.9 would be best for me. Ultimately I plan to build two of the 60dB phono stages using V1.2R regs for both of my systems, plus any other tips I can use to get the best possible performance.
Will look into it soon.
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Old 28th December 2011, 06:37 PM   #7084
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@Salas and RCruz.
Thanks,I'll work on Simplistic, balanced,of course.Is the gain the same in single ended and balanced mode? I think yes, cause the amplitude of the input signal is the same.
Thanks again
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Old 28th December 2011, 07:30 PM   #7085
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You get more 3dB gain in balanced mode but you also get more 3dB noise.

Good luck
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Old 28th December 2011, 09:52 PM   #7086
orelli is offline orelli  Italy
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Sorry Ricardo, I don't understood. I thinked no over gain, but if I'll have an over gain,why +3dB and not +6dB, how in all ways,when one change from unbalanced to balanced mode?
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Old 28th December 2011, 09:58 PM   #7087
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To do it balanced, you need two amplifiers for each channel. So you will need four in total. I did not build one of those... You must ask Merlin.
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Old 28th December 2011, 10:08 PM   #7088
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I know this(two amps for channel), but I don't understand the +3dB gain.
Maybe Felipe or Salas can tell me why.
In any case, thanks Ric.
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Old 28th December 2011, 11:10 PM   #7089
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Quote:
Originally Posted by orelli View Post
I know this(two amps for channel), but I don't understand the +3dB gain.
Maybe Felipe or Salas can tell me why.
In any case, thanks Ric.
Say one side swing to + 1V other sving to -1 =2V duble of one single
duble voltagge = 3 dB
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Old 28th December 2011, 11:22 PM   #7090
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Also special care must be taken regarding cart loading. If I am not wrong, in balanced mode you need to load each halve of the cart with 1/2 Rload
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