dc coupled aikido output?

PreSapian · 2nd July 2012, 04:44 PM

is this a possibility? I have an amp that requires an input cap, that's why. (myrefc)

naturally i'd like to minimize the number of coupling caps in my system.

DF96 · 2nd July 2012, 05:55 PM

Quote:

naturally i'd like to minimize the number of coupling caps in my system.

Why? Much more sensible to simply use the correct value and type in the correct place - just like (presumably) all the many other stages in the recording-reproduction chain which are outside your control.

PreSapian · 06:29 PM

because i want utmost transparency?

i understand this might cost bass response but i wanna try for myself how it sounds- is that not a reason good enough?

DF96 · 2nd July 2012, 06:31 PM

In most cases you may have to replace a coupling cap with a DC servo, which almost invariably involves not only caps but also opamps and stuff like feedback stability. The net result could be worse. By all means don't use more coupling caps than is necessary, but don't use fewer than necessary either.

There is also the question of setting the LF rolloff. This has to be done somewhere and using the right value of coupling cap in the right place is a good way to do this.

PreSapian · 2nd July 2012, 08:03 PM

so removing the output cap will make the aikido unstable?

sorry if i'm coming here barefooted. i still have much homework to do.

DF96 · 2nd July 2012, 08:15 PM

If the amp you will use with it has an input coupling cap which can cope with the Aikido maximum possible DC output voltage, and you will never use one without a cap, or put a volume control between them, then you can omit the Aikido output coupling cap. Perhaps to remind yourself you should put a label on the back panel.

As I said, don't use less than the necessary number of coupling caps.

Chris Hornbeck · 2nd July 2012, 09:02 PM

If this is on a separate chassis from the amp it's feeding, you'll have a dangerous voltage exposed on the audio interconnect. It's not worth the chance of hurting somebody.

All good fortune, and An young Hashimnika,
Chris

2nd July 2012, 04:44 PM	#1
PreSapian diyAudio Member Join Date: Sep 2009 Location: seoul	dc coupled aikido output? is this a possibility? I have an amp that requires an input cap, that's why. (myrefc) naturally i'd like to minimize the number of coupling caps in my system.

2nd July 2012, 06:14 PM	#3
PreSapian diyAudio Member Join Date: Sep 2009 Location: seoul	because i want utmost transparency? i understand this might cost bass response but i wanna try for myself how it sounds- is that not a reason good enough? Last edited by PreSapian; 2nd July 2012 at 06:29 PM.

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2nd July 2012, 06:31 PM	#4
DF96 diyAudio Member Join Date: May 2007	In most cases you may have to replace a coupling cap with a DC servo, which almost invariably involves not only caps but also opamps and stuff like feedback stability. The net result could be worse. By all means don't use more coupling caps than is necessary, but don't use fewer than necessary either. There is also the question of setting the LF rolloff. This has to be done somewhere and using the right value of coupling cap in the right place is a good way to do this.

2nd July 2012, 08:03 PM	#5
PreSapian diyAudio Member Join Date: Sep 2009 Location: seoul	so removing the output cap will make the aikido unstable? sorry if i'm coming here barefooted. i still have much homework to do.

2nd July 2012, 08:15 PM	#6
DF96 diyAudio Member Join Date: May 2007	If the amp you will use with it has an input coupling cap which can cope with the Aikido maximum possible DC output voltage, and you will never use one without a cap, or put a volume control between them, then you can omit the Aikido output coupling cap. Perhaps to remind yourself you should put a label on the back panel. As I said, don't use less than the necessary number of coupling caps.

2nd July 2012, 09:02 PM	#7
Chris Hornbeck diyAudio Member Join Date: May 2011 Location: Little Rock	If this is on a separate chassis from the amp it's feeding, you'll have a dangerous voltage exposed on the audio interconnect. It's not worth the chance of hurting somebody. All good fortune, and An young Hashimnika, Chris