SOZ mod, Regulated supply VS 2 simple CC pullups.

Brian Guralnick · 20th October 2003, 03:22 PM

In an attempt to further filter the power supply from the SOZ amp, what's better, regulating the power supply, or, simple BJT based constant current pull-ups?

What type of performance difference should I expect in each case?

Nelson Pass · 20th October 2003, 03:48 PM

Using CCS's on the positive rail will require some offset
stabilization not included in the original circuit, but is
otherwise do-able, and will result in a more efficient circuit
with even less damping factor.

ZV6 will be addressing this, so watch for it.

Regulating the supplies works well too.

Brian Guralnick · 20th October 2003, 04:07 PM

Quote:

Originally posted by Nelson Pass
more efficient circuit with even less damping factor.

When you say less damping factor, you mean that the amp will have a higher damping factor value?

I forgot, the higher the damping factor, the better the amp's capability to stop the woofer, right?

moe29 · 20th October 2003, 04:49 PM

an updated SOZ

cool!!!

i built a regulated supply for my SOZ, from the Zen variations Part 3
article, and it worked quite well. So you should try that out while
waiting for Zen V6. For some reason though, i'm back to using a
Pi filter for my X-SOZ attempt (a la Henrik's schematic).

With all the presents from Mr. Pass lately, i think he figured out a way to
get UPS to deliver some extra hours for his days

20th October 2003, 03:22 PM	#1
Brian Guralnick diyAudio Member Join Date: Mar 2002 Location: Montreal, Quebec, Canada	SOZ mod, Regulated supply VS 2 simple CC pullups. In an attempt to further filter the power supply from the SOZ amp, what's better, regulating the power supply, or, simple BJT based constant current pull-ups? What type of performance difference should I expect in each case? __________________ _______ Brian

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20th October 2003, 03:48 PM	#2
Nelson Pass The one and only Join Date: Mar 2001	Using CCS's on the positive rail will require some offset stabilization not included in the original circuit, but is otherwise do-able, and will result in a more efficient circuit with even less damping factor. ZV6 will be addressing this, so watch for it. Regulating the supplies works well too.

20th October 2003, 04:49 PM	#4
moe29 diyAudio Member Join Date: Dec 2002 Location: Florida	an updated SOZ cool!!! i built a regulated supply for my SOZ, from the Zen variations Part 3 article, and it worked quite well. So you should try that out while waiting for Zen V6. For some reason though, i'm back to using a Pi filter for my X-SOZ attempt (a la Henrik's schematic). With all the presents from Mr. Pass lately, i think he figured out a way to get UPS to deliver some extra hours for his days

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