AD825 output stage:What bypass caps?

filholder · 15th April 2005, 12:07 PM

Hi

I am replacing the opamps in the output stage of my Arcam Alpha 5+

I am going to start with some AD825 though i also have go samples of AD8065 and AD8610.

What bypass caps values should i use for these?

Fil

Gasho · 15th April 2005, 02:06 PM

What bypass , on power supply or output?

For output you can use 4.7uF high quality polypropilen cap.

filholder · 15th April 2005, 02:19 PM

Hi Gasho,

No i was think of power supply actually. They are going to fit into Brown Dog adaptors and i have heard that i should do bypass to ground on V+ and V- and also have a bypass caps from V+ to V-.

But for these opamps i cannot find what values to use.

Any ideas?

Cheers man

Fil

fmak · 16th April 2005, 06:15 PM

[QUOTE]Originally posted by filholder
[B]Hi Gasho,

No i was think of power supply actually. They are going to fit into Brown Dog adaptors and i have heard that i should do bypass to ground on V+ and V- and also have a bypass caps from V+ to V-.

------------------------------------------------------------------------------------
You will be amazed what 0.1uF npo caeramics (expensive) between V+ and V- will do for the sound! Try it.

15th April 2005, 12:07 PM	#1
filholder diyAudio Member Join Date: Jan 2005 Location: london	AD825 output stage:What bypass caps? Hi I am replacing the opamps in the output stage of my Arcam Alpha 5+ I am going to start with some AD825 though i also have go samples of AD8065 and AD8610. What bypass caps values should i use for these? Fil

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15th April 2005, 02:06 PM	#2
Gasho diyAudio Member Join Date: Nov 2004 Location: Zagreb	What bypass , on power supply or output? For output you can use 4.7uF high quality polypropilen cap.

15th April 2005, 02:19 PM	#3
filholder diyAudio Member Join Date: Jan 2005 Location: london	Hi Gasho, No i was think of power supply actually. They are going to fit into Brown Dog adaptors and i have heard that i should do bypass to ground on V+ and V- and also have a bypass caps from V+ to V-. But for these opamps i cannot find what values to use. Any ideas? Cheers man Fil

16th April 2005, 06:15 PM	#4
fmak diyAudio Member Join Date: May 2001 Location: London UK	[QUOTE]Originally posted by filholder [B]Hi Gasho, No i was think of power supply actually. They are going to fit into Brown Dog adaptors and i have heard that i should do bypass to ground on V+ and V- and also have a bypass caps from V+ to V-. ------------------------------------------------------------------------------------ You will be amazed what 0.1uF npo caeramics (expensive) between V+ and V- will do for the sound! Try it.

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