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Old 7th February 2012, 11:51 PM   #21
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I have a few questions about the v2 version:

what sort of power output could we expect into 6ohm speakers?
What would be an appropriate transformer rating for such output?
If mounting the 4 output devices and the 2 "double" diodes in one heatsink, what w/c value should one look for?
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Old 7th February 2012, 11:54 PM   #22
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Oh, the article is out! Thank you very much!
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Old 8th February 2012, 12:26 AM   #23
6L6 is offline 6L6  United States
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So let me ask a question about configurations --

I am trying to use higher voltage transformers, but am not concerned about ultimate power output. My transformers are 49v-0-49v

Can the v3 version be used as drawn with only 2 or 3 output pairs? The heatsinking required with the 4 pairs seems to be huge.
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Old 8th February 2012, 01:00 AM   #24
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Another classic. Fun, fun, fun. Thanks.
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Old 8th February 2012, 01:10 AM   #25
ra7 is offline ra7  United States
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F5c boards ordered
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Old 8th February 2012, 01:18 AM   #26
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Many Thanks Papa!!!

Is this , Particularly the V1 version, the beast with which i can drive my 0.1 ohm Ribbons speakers direct - ie no transformer?

I see in the article the pictures of a 0.1 ohm being driven with high current...

many thanks
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Old 8th February 2012, 01:21 AM   #27
a.wayne is offline a.wayne  United States
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.1 forget about it , anything below .6 kills the sonics .....
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Old 8th February 2012, 01:54 AM   #28
anilva is offline anilva  India
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Default Thanks

Thanks Papa for the Turbo. It's been a long time since I read an article with such concentration and passion. Didn't want to miss a word.

Well next few months, if not years are going to be busy with these builds. Need to figure out a source for Fairchilds.

Cheers.
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Old 8th February 2012, 01:55 AM   #29
a.wayne is offline a.wayne  United States
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Turbo F5 V3 for heeeeevaaar !!!!!!!!! balanced ........
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Old 8th February 2012, 03:25 AM   #30
labjr is offline labjr  United States
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Very interesting reading. Thanks for such an elaborate and thorough manual.

I noticed a couple of changes to the F5 circuit. R17 & R18 are now 100 ohm. And the gate resistors are 100 ohm. I have boards which I built last year. I guess it's not cricital to change those resistors? I don't want to risk my nicely assembled boards.

Thanks again
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