A Concise Guide to the Published Amplifier Circuits of Nelson Pass - Page 5 - diyAudio
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Old 8th July 2014, 04:13 AM   #41
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Does anyone have a copy of the Concise Guide? The hosting website is no longer functioning.
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Old 30th July 2014, 05:53 AM   #42
rsdio is offline rsdio  United States
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Hi folks,

As a few people have noticed, my old sounds.wa.com domain is gone. Long live audiobanshee.com! Note: I edited the first post to correct the link.

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Old 19th December 2014, 03:19 PM   #43
poli is offline poli  Germany
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Thanks Brian,
really good work!
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Old 14th September 2015, 02:16 PM   #44
jdg123 is online now jdg123  United States
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Question phase reversal

As I age I need to ask for help from younger minds: is there a Nelson Pass design that leaves the final phase inversion to the user (reversing black and red speaker terminals)? I found no mention in this guide but I have this notion that there is one...BOZ maybe?
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Old 14th September 2015, 02:56 PM   #45
Zen Mod is offline Zen Mod  Serbia
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you can do that on any amplifier , speakers being floating devices
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa... by Mighty ZM
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Old 14th September 2015, 09:45 PM   #46
jdg123 is online now jdg123  United States
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Good point!

I just wanted to know if, like some Conrad Johnson designs, NP came up w one and similarly concluded it was simpler to have the user do the last phase inversion.
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Old 15th September 2015, 12:46 AM   #47
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If I do that, I label the output terminals so that the user will connect the
positive of the speaker to the "red" and negative to the "black" and then
I tell them about it in the manual in case they are connecting something
else to the loudspeaker and need to know who is Ground.

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Old 15th September 2015, 02:10 AM   #48
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Very nice. Straight to the point.
There are quite a few designs that are missing though.
"If you leave this point unattached to some circuitry, an ideal constant current source will emit a small lightning bolt which will travel until it connects to something." Nelson Pass
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Old 15th September 2015, 02:30 AM   #49
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Looks like it hasn't been updated for a while. Perhaps we are at the point where a Wiki guide to all the circuits with links to forum posts containing circuits of interest would be beneficial to all? I know I am curious about more than one circuit which has a thread running to hundreds of pages...
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