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