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Old 28th March 2015, 11:11 AM   #21
Dennis Hui is offline Dennis Hui  Canada
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Old 3rd April 2015, 04:59 AM   #22
ammel68 is offline ammel68  United States
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Juma, can the gain be lowered perhaps with a higher value R16 or will that cause stability issues?

Thanks...
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Old 3rd April 2015, 10:42 AM   #23
juma is offline juma  Serbia
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Higher value of R16 (150R - 220R) will lower the gain without stability issues.
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Old 15th April 2015, 11:41 PM   #24
marsupialx is offline marsupialx  United States
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Cubie 2. Getting ready to etch.
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Old 16th April 2015, 01:56 PM   #25
Cambe is offline Cambe
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Old 18th April 2015, 12:06 AM   #26
marsupialx is offline marsupialx  United States
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Juma, if you could glance at this and see if I've made a stupid mistake, that would be great. I think it is ok. Thanks!
Any special resistor wattages or cap voltages? I assume 25v caps for C5 and C6. (+-15v Supply).
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Old 18th April 2015, 04:07 AM   #27
ammel68 is offline ammel68  United States
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Quote:
Originally Posted by marsupialx View Post
I assume 25v caps for C5 and C6. (+-15v Supply).
10V for C3. I'm going to use 16V.

C5 and C6 25V or higher. I already have 35V lying around, so that's what I'll be using.
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Old 18th April 2015, 11:58 AM   #28
juma is offline juma  Serbia
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Quote:
Originally Posted by marsupialx View Post
Juma, if you could glance at this and see if I've made a stupid mistake, that would be great. I think it is ok. Thanks!
Any special resistor wattages or cap voltages? I assume 25v caps for C5 and C6. (+-15v Supply).
I see no mistakes
You got caps all right as well as ammel68 (C3 - 10V).
All resistors are 1/4W except R20 - I used there 1/8W because of tight space but you can use 1/4W and turn it to standing position. Its value is not critical - anything from 47k to 330k will do OK.
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Old 18th April 2015, 12:06 PM   #29
marsupialx is offline marsupialx  United States
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Quote:
Originally Posted by juma View Post
I see no mistakes
You got caps all right as well as ammel68 (C3 - 10V).
All resistors are 1/4W except R20 - I used there 1/8W because of tight space but you can use 1/4W and turn it to standing position. Its value is not critical - anything from 47k to 330k will do OK.
Thanks!!!
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Old 21st April 2015, 09:39 AM   #30
acamilicko is offline acamilicko  Serbia
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Dear Juma,

I am now in a doubt.

http://www.diyaudio.com/forums/pass-...l-mosfets.html

I know there is topology difference between these two, but if you could let me know, which one in your opinion has slightly better sound?
To be precise, more "tube" sound?

And one more, if I go with 24V rails and 1A quiescent current on Cubie, on which power level (8 ohm load) will it leave A class?

Thanks!
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