Safety. If the rail sees ground through the cap, it should not leak. (Of course, other things may be broken... but the caps should be ok.) 🙂
it'll compare nice , especially if not overdriven
difference to JFet buffer will be more matter of taste , not quality
difference to JFet buffer will be more matter of taste , not quality
That's more nature of question. What is flavor of diamond(BJT) vs Jfet. Up to this point I tend towards Jfet, but they are becoming a sacred cow.
if tweaked , THD spectra is pretty close to JFet buffer one
just don't ask how , I would have difficulties to find notes about that ..... not even thinking of remembering 😉
spice it a little , it's easy to duplicate what my two cells achieved then .....
just don't ask how , I would have difficulties to find notes about that ..... not even thinking of remembering 😉
spice it a little , it's easy to duplicate what my two cells achieved then .....
You see the difference in the post 6061
http://www.diyaudio.com/forums/pass-labs/216616-f6-amplifier-607.html#post4318753
Can not comment the sound in any other way than:
It is excellent!
Will get the THDs tomorrow.
First impression however is,
folks, its pretty good now...
I could not make the F6 better than this.
My problem continues in one channel only, where the output has a big swing before settling in. Could it be a problem with C1 or C2 (1000 mfd) caps? The power supply capacitor bank is common and does not seem to be the problem as the other channel is behaving well at startup.
There is absolutely no problem in sound reproduction, gain or any other matter.
Thanks in advance.
Cheers.
aha
recollected some memory mist
more juice ( those 10K to 3k3 or even lower) and cascoded input critters
also - cascode modulation , but sadly possible only in balanced , due to needed (anti)phase
few more details , but I'm getting older and older 😀
Would be nice if the diamond buffer performs as well as the JFET circuit with detail retrieval etc.
something as this - not just spiced but also tried many moons ago ( while I was playing with Poor Serbian Man NEM AI-50)
I just made sim by memory , but that was it , I believe
THD spectra - 4M No, of data point samples , 7 points , Hamming , no compression
frankly , not exactly as sweet as JFet complementary buffer , but pretty decent ..... and there is iron for sweetening things 😉
I tried CCS-es instead of 3K thingies , but my ears are not in Generg's league ...... so I didn't heard positive step in that
I just made sim by memory , but that was it , I believe
THD spectra - 4M No, of data point samples , 7 points , Hamming , no compression
frankly , not exactly as sweet as JFet complementary buffer , but pretty decent ..... and there is iron for sweetening things 😉
I tried CCS-es instead of 3K thingies , but my ears are not in Generg's league ...... so I didn't heard positive step in that
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another crumb from memory ( seeing 1uF on recent schematic mislead me )
C was 10u and upwards ... now different , mucho .....
in fact , I put there 470uF Elna (having them around always ) but 10uF was confirmed as minimum for pleasantness
cascode output ones or not , your call
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Thanks New Record Day for First Watt F6 review video:
https://www.youtube.com/watch?v=pdw7esZBbXE
Have fun
https://www.youtube.com/watch?v=pdw7esZBbXE
Have fun
Thanks New Record Day for First Watt F6 review video:
https://www.youtube.com/watch?v=pdw7esZBbXE
Have fun
I guess the F6 he reviewed was the newer one with IRF MOSFETs?