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Old 24th March 2012, 02:14 PM   #1841
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Didn't you consider building the Honey Badger instead of this old Mongrel model?
It seems the selected DIYAUDIO amp is the best of OS's efforts from all the Mongrels versions. Anyone may correct me if I am wrong.
http://www.diyaudio.com/forums/solid...-diyaudio.html
Even though, congratulations for your nice job!
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Max.
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Old 24th March 2012, 10:13 PM   #1842
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Quote:
Originally Posted by smartx21 View Post
Didn't you consider building the Honey Badger instead of this old Mongrel model?
It seems the selected DIYAUDIO amp is the best of OS's efforts from all the Mongrels versions. Anyone may correct me if I am wrong.
http://www.diyaudio.com/forums/solid...-diyaudio.html
Even though, congratulations for your nice job!
Regards,
Max.
I did not know about that one (Honey Badger) ,a friend of mine told me all the best about mongrel so i started it. I have read the most of the topic but there are a few things that i don´t understand

The MONGREL (supersym II)

The MONGREL (supersym II)

so,building has stopped and waits for some better times when i get more transistors and electronic adjustable fuse to prevent bourn-outs. Time will tell...
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Old 6th May 2012, 10:30 PM   #1843
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Default AX1,3 final KIT

I got no help about misterious R8 in CX1.3 so i decided to do a copy of a final version AX1,3 and here it is. I sincerely hope that someone will still help me about CX1,3 and R8 problem,just point me where to look or how to think about it.
Attached Images
File Type: jpg Slika309.jpg (498.3 KB, 581 views)
File Type: jpg Slika310.jpg (553.0 KB, 546 views)
File Type: jpg Slika311.jpg (489.3 KB, 511 views)
File Type: jpg Slika312.jpg (431.2 KB, 544 views)
File Type: jpg Slika314.jpg (436.8 KB, 505 views)
File Type: jpg Slika320.jpg (453.0 KB, 141 views)
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Old 6th May 2012, 11:42 PM   #1844
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DIYAudio is glitching on me, the thumbnails won't load after licking on them. So I can't look at the schematic. It is possible that resistor could be omitted, or it may be there to lower the dissipation of the LTP current source. In the picture it appears to be 2.2k, and that sounds about right. But I can't see the schematic to be sure...
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Old 7th May 2012, 10:57 AM   #1845
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Quote:
Originally Posted by keantoken View Post
DIYAudio is glitching on me, the thumbnails won't load after licking on them. So I can't look at the schematic. It is possible that resistor could be omitted, or it may be there to lower the dissipation of the LTP current source. In the picture it appears to be 2.2k, and that sounds about right. But I can't see the schematic to be sure...

Maybe this would help? I am not so sure what is the latest schematic but this is what i have:
Attached Images
File Type: gif CX1.3VB-U_schematic.GIF (60.3 KB, 325 views)
File Type: gif CX1.3VB-U_overview.GIF (43.7 KB, 328 views)

Last edited by 44250; 7th May 2012 at 10:59 AM.
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Old 7th May 2012, 11:18 AM   #1846
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I am guessing that R8 is the resistor in the tail of the input LTP, before the CCS.

But the pic is so out of focus I can't read much of it.

What's the point of posting a >500kB pic that can't be read?
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Old 7th May 2012, 02:36 PM   #1847
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Yes, I'm sure that's a 2.2k resistor for R8. This resistor isn't needed for dissipation reasons; It was intended to increase the CCS impedance at high frequencies. It does help during fast pulses. I would put it in, but you could just as well short it.
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Old 7th May 2012, 02:40 PM   #1848
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44250, have you listened to any of OS's amps? Can you speak on the sound quality? I was present through the design process, and the engineering is impeccable...
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Old 7th May 2012, 04:21 PM   #1849
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Thumbs up thanks! :)

Quote:
Originally Posted by keantoken View Post
44250, have you listened to any of OS's amps? Can you speak on the sound quality? I was present through the design process, and the engineering is impeccable...
No,this would be the first one and i have started it advised by my friend nikko. He said that "it sounds just like boraomega´s STUDIO SE but on steroids" what was enough for me to start assembling it. (i have STUDIO SE and like the sound of it).

Thank you all so much for help given me here about CX1.3 ,i will post each progres i make. Thank you all so much!
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Old 7th May 2012, 04:47 PM   #1850
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About sound quality. I built the Mongrel with the AX board and have been living with it since september. I think it sounds very good and also has plenty of power as expected. I am happy with it. However, it would be fun to see how a completed circuit measures. Anyone done that?
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