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-state/192431-diyab-amp-class-ab-amp-diyaudio.html
Even though, congratulations for your nice job!
Regards,
Max.
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-state/192431-diyab-amp-class-ab-amp-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
http://www.diyaudio.com/forums/solid-state/169590-mongrel-supersym-ii-184.html#post2954547
http://www.diyaudio.com/forums/solid-state/169590-mongrel-supersym-ii-184.html#post2956426
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... 🙂
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.
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.
Attachments
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:
Attachments
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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?
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?
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.
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...
thanks! 🙂
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! 🙂
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! 🙂
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?
44250: I built the PB250 with an AX1.3 according to the schematic in your post (as it also appeared in late version in this thread). However I reduced the gain somewhat, and the phase maring became to low and caused a slight oscillation. Ostripper helped me to adjust some other components to make it stable (discussed somewhere earlier in this thread). Basically it work very good. Recently I have had problems with the audio sometimes fading away at in one of the two channels, but this I attribute to bad contact/soldering somewhere since the audio back if I knock slightly on the enclosure... 😀 Just need to find some time to open the box and do some fault finding
No,not yet... It is on a stand-by for now,i will post as soon as i do something,words and pictures! 🙂
Gerbers files for your supersym and The MONGREL (supersym II)
I would like the Gerbers files for your supersym and The MONGREL (supersym II)
amplifiers so that I can order several sets for building and testing. I you offer a group
buy for either of these amplifiers, let me know. I can either have them done at a
vendor, using the Gerbers files, or purchase them via a group buy. Let me know.🙂
I would like the Gerbers files for your supersym and The MONGREL (supersym II)
amplifiers so that I can order several sets for building and testing. I you offer a group
buy for either of these amplifiers, let me know. I can either have them done at a
vendor, using the Gerbers files, or purchase them via a group buy. Let me know.🙂
