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My Take on X-BOSOZ
My Take on X-BOSOZ
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Old 12th July 2012, 06:19 AM   #1411
HIPCHECK is offline HIPCHECK  United States
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Brian and Russ, thank you so much for support on these PCB's way past the "fashionable" period.

Answer was that obvious I guess.
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Old 12th July 2012, 01:48 PM   #1412
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Hello,
Are any more of the X-BOSOZ/PSU PCB's available?
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Old 12th July 2012, 04:40 PM   #1413
HIPCHECK is offline HIPCHECK  United States
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I bumped a wanting to buy pcb thread for about a year IIRC before I got mine.

Steve
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Old 12th July 2012, 07:55 PM   #1414
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HIPCHECK, thank's!
Lots of waiting projects to finish in the meantime
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Old 19th June 2013, 01:05 AM   #1415
still4given is offline still4given  United States
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My Take on X-BOSOZ
I started one of these when Russ and Brian first started offering them. I believe I was part of the first batch. Anyway, I never finished it. I got the PSU completed and the X-BoSoZ competed except for installing the FET's. When I realized I would need an expensive volume control circuit, I put it on the shelf. Well I have just returned to the hobby and am anxious to complete some of the projects that I left undone. This is one of them. I have looked around and it seems like not many of the X-Bosoz's were built. I see also that Twisted Pair stopped dealing with them. So I'm asking if any of you have built one and if you are still using it. The main reason I got interested in this is because I had just finished an Aleph X and wanted a balanced Pre to go with it. So what do you think? Is this a worthwhile preamp to complete and is there a good attenuator to go with it that is a little less complicated?

Thanks, Terry
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Old 19th June 2013, 02:46 AM   #1416
HIPCHECK is offline HIPCHECK  United States
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Looks like you got your AX working and got the diy bug again?

As for this pre-amp, I will let you know, I have one almost done. I will run with my Mini-A now, and later a diy AX.
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Old 19th June 2013, 03:03 AM   #1417
still4given is offline still4given  United States
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My Take on X-BOSOZ
What are you using for the attenuator?
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Old 19th June 2013, 03:34 AM   #1418
hayenc is offline hayenc  United States
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Loved the Pre-amp. Used Russ' switching attenuator. Basic problem I could never resolve was sensitivity to static or transients. Changed the FETs many times .
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Old 19th June 2013, 03:38 AM   #1419
HIPCHECK is offline HIPCHECK  United States
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I have an Audio Alchemy DLC pre-amp. It should handle the switching and volume controls for me.

I would think all the digital stuff would not really be needed, however, pga volume control kits are more common now, and could be had much cheaper than when this project first started.

Steve
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Old 19th June 2013, 07:57 AM   #1420
wuffwaff is offline wuffwaff  Netherlands
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Quote:
Originally Posted by still4given View Post
What are you using for the attenuator?
Hi,

Iīm still using my X-BOSOZ into a pair of Aleph-X and build another one for a friend.
In my amp Iīm using a balanced attenuator (is somewhere in the Borbely papers) which is quite simple (a 24-step switch and 46 resistors) but you canīt buy it ready made (at least I didnīt find a supplier). You can have a nice low output impedance with these but it will be dependend on the volume setting.

The other I build with a remote controlled volume control from Dantimax (for balanced amps)



William
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