Yeah, the 1 Kohm inputs will give you about that. You
can lower the values of both the 10K and 1K values and
pick up some more bandwidth or you can reduce the
gain from 20 dB to say 14 dB by replacing the 10K's with
4.7 Kohm, keeping the 1K inputs.
can lower the values of both the 10K and 1K values and
pick up some more bandwidth or you can reduce the
gain from 20 dB to say 14 dB by replacing the 10K's with
4.7 Kohm, keeping the 1K inputs.
When gain changed to 14db then -0.3db at 20KHz, -3db at 74KHz.
I have only tried this in my sim.
To mee it still seems a little low allthough better.
Any Opinions on this one.
I have only tried this in my sim.
To mee it still seems a little low allthough better.
Any Opinions on this one.
Henrik,
I don't know if I was aming a bridged Zen rather than an X,
Actually I suppose that " only Freud knows it "🙂 ; by the way thank you for the input.
I 'm for the buffer. I have tried it - but with irf9610- and it has surprised me ( real life ).
I would like pospone any discussion for when you will try it too.
I don't know if I was aming a bridged Zen rather than an X,
Actually I suppose that " only Freud knows it "🙂 ; by the way thank you for the input.
I 'm for the buffer. I have tried it - but with irf9610- and it has surprised me ( real life ).
I would like pospone any discussion for when you will try it too.

Hi Stefano!
May be You had a "Freudian slip".
Most certainly, you are quick at the "real life" trigger, nice.
You made the buffer with irf9610, and even with the higher inputcapacitanse You get -0,01db at 20kHz and -3db at 140 KHz. All seen in my "crystal ball" better known as a simulator.
So if this is real life to You, congatulation.
I do have a wordbook just like You, but I can´t find "pospone", but any way, you wil hear from me again when I have tried this buffer outside my "krystalball".
I am planning a test SOZ, with wich I can switch fast between SOZ, X-SOZ and X-SOZ with buffer, and I have all the difficult parts in house now.
May be You had a "Freudian slip".
Most certainly, you are quick at the "real life" trigger, nice.
You made the buffer with irf9610, and even with the higher inputcapacitanse You get -0,01db at 20kHz and -3db at 140 KHz. All seen in my "crystal ball" better known as a simulator.
So if this is real life to You, congatulation.
I do have a wordbook just like You, but I can´t find "pospone", but any way, you wil hear from me again when I have tried this buffer outside my "krystalball".
I am planning a test SOZ, with wich I can switch fast between SOZ, X-SOZ and X-SOZ with buffer, and I have all the difficult parts in house now.
Hej, Henrik
It sounds like an interesting set of experiments you have planned. Are you going to use switches to bypass the buffer, connect/disconnect the "X" connection, and so on?
Just curious.
Erik
It sounds like an interesting set of experiments you have planned. Are you going to use switches to bypass the buffer, connect/disconnect the "X" connection, and so on?
Just curious.
Erik
AudioFreak!
I just realised Your ansver to me.
Thanks for the interpetation of pospone.
Stefano
No discussion before entering real life, promise.
I just realised Your ansver to me.
Thanks for the interpetation of pospone.
Stefano
No discussion before entering real life, promise.
Henrik -
That looks fantastic! Not only that: it has made it considerably easier for me to get my head around the different variations that had been posted in the thread.
Erik
That looks fantastic! Not only that: it has made it considerably easier for me to get my head around the different variations that had been posted in the thread.
Erik
When coupeling into X-SOZ with or without buffer, the terminals in "test SOZ.pdf" 13 and 14 is short.
Real life test of ZOS, X-SOZ and Buffered X-SOZ.
To day I finished my Test SOZ, as described in "test soz.zip" in my post from 09-10-2002.
Stefano tried the Buffered X-SOZ the other day, and he was for it, as he said in his post from 09-10-2002.
I totaly agree with him.
It really was fun to listen to the different versions and to be able to compare them.
For this purpose I used Laurie Anderson´s LP "Strange Angels" for two reasons, first I like this album very much and second Laurie Anderson works with the sensation of space in her music as a part of then composition. I used the two first cuts, "Strange Angel" and "Monkey´s Paw".
SOZ compared to Buf-X-SOZ.
I started listening to the Buf-X-SOZ, and afterwards the SOZ.
I coudn´t beleve the difference, the SOZ had only verry little depth in the soundstage, it was almost as if it wasn´t there at all when you just have heard the Buf-X-SOZ, unbelievable difference.
The SOZ´s bas is deep, but it is pouring more or les out in the bottom of the soundstage like smoke on a Rock concert, but on the Buf-X-SOZ you can actually hear the different levels of deep and dynamic bass, wich also helps locating it in the room and makes it more tactile in contast to smoke. Amaizing.
All the midtone is far more dynamic and detaild on the Buf-X-SOZ, wish makes it possible to hear Lauriandersons voice tree diffrent places in the room, where she is triplicated, singing unison with her self. There is a lot of space around her voice made by overtones from accordion, guitars, tambourine, cymbals and echoes from dynamic drums.
So so so so wonderful.
My X-SOZ had all the treedimentional virtues besides the deepest bas, wich was caused by the low value of output caps (10uF) in my BOSOZ, and because of the lack of highfrequense response the sound was somehow harsh, and that destroyed the feeling of high space in the soundstage. So the easy coming sound from the SOZ came back because of the buffer, so nothing is lost, only much more had come to stage.
This is really some improvement worth talking about, not to say to listen to.
If this is how the magical X sounds, then Mr. Pass, congratulations with Your extreemly good looking XA200, the sound must be terific!!!!
Stefano.
I would appriciate some comments from You, we shoud be able to talk together since the "postpone" era is over now.
Many thanks for starting this thread and staying on board.
Ian
Thanks a lot for Your support, I hope You will try this Buf-X-SOZ Yourself.
Nelson "The One And Only"
Again, thanks a lot for Your support and will to share Your knowledge.
Cheers
To day I finished my Test SOZ, as described in "test soz.zip" in my post from 09-10-2002.
Stefano tried the Buffered X-SOZ the other day, and he was for it, as he said in his post from 09-10-2002.
I totaly agree with him.
It really was fun to listen to the different versions and to be able to compare them.
For this purpose I used Laurie Anderson´s LP "Strange Angels" for two reasons, first I like this album very much and second Laurie Anderson works with the sensation of space in her music as a part of then composition. I used the two first cuts, "Strange Angel" and "Monkey´s Paw".
SOZ compared to Buf-X-SOZ.
I started listening to the Buf-X-SOZ, and afterwards the SOZ.
I coudn´t beleve the difference, the SOZ had only verry little depth in the soundstage, it was almost as if it wasn´t there at all when you just have heard the Buf-X-SOZ, unbelievable difference.
The SOZ´s bas is deep, but it is pouring more or les out in the bottom of the soundstage like smoke on a Rock concert, but on the Buf-X-SOZ you can actually hear the different levels of deep and dynamic bass, wich also helps locating it in the room and makes it more tactile in contast to smoke. Amaizing.
All the midtone is far more dynamic and detaild on the Buf-X-SOZ, wish makes it possible to hear Lauriandersons voice tree diffrent places in the room, where she is triplicated, singing unison with her self. There is a lot of space around her voice made by overtones from accordion, guitars, tambourine, cymbals and echoes from dynamic drums.
So so so so wonderful.
My X-SOZ had all the treedimentional virtues besides the deepest bas, wich was caused by the low value of output caps (10uF) in my BOSOZ, and because of the lack of highfrequense response the sound was somehow harsh, and that destroyed the feeling of high space in the soundstage. So the easy coming sound from the SOZ came back because of the buffer, so nothing is lost, only much more had come to stage.
This is really some improvement worth talking about, not to say to listen to.
If this is how the magical X sounds, then Mr. Pass, congratulations with Your extreemly good looking XA200, the sound must be terific!!!!
Stefano.
I would appriciate some comments from You, we shoud be able to talk together since the "postpone" era is over now.
Many thanks for starting this thread and staying on board.
Ian
Thanks a lot for Your support, I hope You will try this Buf-X-SOZ Yourself.
Nelson "The One And Only"
Again, thanks a lot for Your support and will to share Your knowledge.
Cheers

By the way, I used ZVP3310A in the buffer, not the ZVP3306A, just like "The One And Only" did in ZV4.
Henrik,
Congratulations on completing your tests. What type of speakers do you run the buffered X-SoZ with?
Erik
Congratulations on completing your tests. What type of speakers do you run the buffered X-SoZ with?
Erik
Bas: Richard Allen CG 12 Super, 15 Ohm (sensitivity >94 db)
Midway: Richard Allen LP88, 8 Ohm
High: Dynaudio D28
Filter: Hybrid, 6db/oct at 340 Hz and 18db/oct at 4000 Hz.
These data are as I remember, could be a little wrong.
In my rooms I can hear some verry loud music with this SOZ!
Midway: Richard Allen LP88, 8 Ohm
High: Dynaudio D28
Filter: Hybrid, 6db/oct at 340 Hz and 18db/oct at 4000 Hz.
These data are as I remember, could be a little wrong.
In my rooms I can hear some verry loud music with this SOZ!
Henrik I'm very pleased with your posts.
I love Laurie Anderson too. Even Dynaudio!
Some listeneng tests: Archie Sheep-Dollar Brand , Moniebah;
Steely Dan, Your Gold Teeth 2
Dizzy Gillespie , Birk's Works
Tinsley Ellis , Pawnbroker
Billy Cobham, Two For Juan
Afterhours
Just some .
I feel like the musicians want to come out the speakers with their
instruments and voices and yes, they play fast and warmth and
the bass is round and deep. Touching .
Dinamics are very different from the xson of zen without buffer.
At the moment I put the feedback connections like the xson of zen without buffer and let the buffer out the loop.
But I will try your arrangement when Zvp's will be avaiable .Enjoy
I love Laurie Anderson too. Even Dynaudio!
Some listeneng tests: Archie Sheep-Dollar Brand , Moniebah;
Steely Dan, Your Gold Teeth 2
Dizzy Gillespie , Birk's Works
Tinsley Ellis , Pawnbroker
Billy Cobham, Two For Juan
Afterhours
Just some .
I feel like the musicians want to come out the speakers with their
instruments and voices and yes, they play fast and warmth and
the bass is round and deep. Touching .
Dinamics are very different from the xson of zen without buffer.
At the moment I put the feedback connections like the xson of zen without buffer and let the buffer out the loop.
But I will try your arrangement when Zvp's will be avaiable .Enjoy

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