Aleph 3 R114 connection

Forte · 26th October 2001, 06:31 PM

Does the connection point of between R114 & C103 have connected to Q105-E?
I just saw one article in Chinese say it have to connected. But compare to Aleph 4, I think maybe not.

tortello · 26th October 2001, 06:47 PM

No, it must not be connected to the Q105-E.

"...R114 and C103 adjust the current
against output current as sensed by the voltage across R124-127...."

Nelson Pass · 29th October 2001, 06:10 PM

When I draw a schematic, I follow the standard where
two lines crossing are not connected unless there is
a big dot on them, and I don't even use dots. Connected
lines form a "T".

Thus R114 does not attach to the emitter of Q105.

There is some confusion on this as the Aleph 4 schematic
had an error in it at the junction of C9, R26, R28 and
the base of Q3. These are all connected at this point,
and corrected schematics shows a big dot there.

The same error made it onto the Aleph 5 schematic, where
the base of Q5, R19, C10, and R20 should be connected
with a dot. This was the result of "cut-and-paste".

The Aleph 1.2, Aleph 2, and Aleph 3 schematics are
correct in this regard.

Forte · 30th October 2001, 10:10 PM

Thank for the answer. It¡¦s helping a lot.

I have another question related after these few days. The sequence of R114 & C103 makes difference.
I found in Aleph Design have two setup. Resistor come first from Output, some time is Capacitor. And sounding little difference by listen some music. I like Resistor first from output. Just like Aleph 4 & 5. It seems to be more Clearly & Purity.
Why there is two kind of setup is my question?

Nelson Pass · 30th October 2001, 11:17 PM

As the two components are simply in series,
there should be no difference whatsoever.

30th October 2001, 10:10 PM	#4
Forte diyAudio Member Join Date: Oct 2001 Location: Taipei TW	Sequence? Thank for the answer. It¡¦s helping a lot. I have another question related after these few days. The sequence of R114 & C103 makes difference. I found in Aleph Design have two setup. Resistor come first from Output, some time is Capacitor. And sounding little difference by listen some music. I like Resistor first from output. Just like Aleph 4 & 5. It seems to be more Clearly & Purity. Why there is two kind of setup is my question?

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26th October 2001, 06:31 PM	#1
Forte diyAudio Member Join Date: Oct 2001 Location: Taipei TW	Does the connection point of between R114 & C103 have connected to Q105-E? I just saw one article in Chinese say it have to connected. But compare to Aleph 4, I think maybe not.

26th October 2001, 06:47 PM	#2
tortello diyAudio Member Join Date: Jul 2001 Location: Genoa (ITALY)	No, it must not be connected to the Q105-E. "...R114 and C103 adjust the current against output current as sensed by the voltage across R124-127...."

29th October 2001, 06:10 PM	#3
Nelson Pass The one and only Join Date: Mar 2001	When I draw a schematic, I follow the standard where two lines crossing are not connected unless there is a big dot on them, and I don't even use dots. Connected lines form a "T". Thus R114 does not attach to the emitter of Q105. There is some confusion on this as the Aleph 4 schematic had an error in it at the junction of C9, R26, R28 and the base of Q3. These are all connected at this point, and corrected schematics shows a big dot there. The same error made it onto the Aleph 5 schematic, where the base of Q5, R19, C10, and R20 should be connected with a dot. This was the result of "cut-and-paste". The Aleph 1.2, Aleph 2, and Aleph 3 schematics are correct in this regard.

30th October 2001, 11:17 PM	#5
Nelson Pass The one and only Join Date: Mar 2001	As the two components are simply in series, there should be no difference whatsoever.