Little dot and direct coupled amps...... - Page 2

DF96 · 29th March 2012, 05:30 PM

The architecture of an amplifier will tell whether it is capable of being direct coupled, as not all are. If one is capable of being direct coupled then whether it is or not is a design decision so, as others have said, you have to ask about a particular amplifier or look at the circuit diagram. You have been given good advice.

JoeDJ · 06:03 PM

Quote:

Originally Posted by DF96

The architecture of an amplifier will tell whether it is capable of being direct coupled, as not all are. If one is capable of being direct coupled then whether it is or not is a design decision so, as others have said, you have to ask about a particular amplifier or look at the circuit diagram. You have been given good advice.

That is probably the most informative explanation that have read anywhere on the subject.

That clears things up for me for the most part.

DigitalJunkie · 29th March 2012, 06:06 PM

Quote:

Originally Posted by godfrey

If in doubt, you can always do the AC coupling yourself; just put a suitable capacitor between the Little Dot's output and the power amp's input.

That's what I would do.
But there's always someone who's severely allergic to caps.

hebrer · 11th September 2012, 07:46 PM

I am hoping people at this forum who are more knowledgeable than myself would help me determine if my amplifiers are of the direct coupling type or not. One is a modified Decware Zen design with EL84 power tubes and 6922 tubes in the preamplifier section, plus rectifier tube for the power (pictures attached). I am considering ordering LD Mk III or LD Mk IV which I plan to use mostly with active monitor speakers (Yamaha HS50M) but may wish to connect it to this Decware Zen clone or perhaps t-amp from Arjen Helder. Any thoughts which of these amplifiers/active monitor speakers might use direct coupling please?

hebrer · 12th September 2012, 08:24 AM

Perhaps I should add that I also contacted the builder of the amp shown in previous message (still waiting for reply).
Peter

hebrer · 12th September 2012, 08:16 PM

OK, I got the answers I needed. Apparently there is a capacitor used in between the stages in the design shown above so the amp is not directly coupled.

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29th March 2012, 05:30 PM	#11
DF96 diyAudio Member Join Date: May 2007	The architecture of an amplifier will tell whether it is capable of being direct coupled, as not all are. If one is capable of being direct coupled then whether it is or not is a design decision so, as others have said, you have to ask about a particular amplifier or look at the circuit diagram. You have been given good advice.

12th September 2012, 08:24 AM	#15
hebrer diyAudio Member Join Date: Jan 2006 Location: Slovakia	Perhaps I should add that I also contacted the builder of the amp shown in previous message (still waiting for reply). Peter

12th September 2012, 08:16 PM	#16
hebrer diyAudio Member Join Date: Jan 2006 Location: Slovakia	OK, I got the answers I needed. Apparently there is a capacitor used in between the stages in the design shown above so the amp is not directly coupled.