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Another Passive
Line Stage Schematic
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If
you set the MODE switch
to position 1, you can hear the
SOURCE selection, but the recording
output is not connected. |
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When
the MODE switch is
set to position 2, you have Mute,
with both the Main Outputs and
the Recording Outputs disconnected. |
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You
can listen to what is
selected by the SOURCE switch at the same
time you are recording it if
position
3 of the MODE switch is selected. |
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The
Grounding switch feature
is sometimes useful when a system has
"ground hum" problems (but this is
not typical). The Grounding switch can be a
Double Pole, Double Throw,
Center OFF toggle switch. In the Center OFF
position, the grounds from
each channel (Left and Right) are isolated
from each other. Flipping the
toggle switch up causes the two grounds,
Left and Right channel grounds,
to be connected to each other. Flipping it
downward causes both grounds
to be connected to each other AND connects
them both to the chassis (if
the chassis is a metal one, which is
normally recommended.) |
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If
you do not need a Ground
switch for your system, you can skip using
one, of course. Simply connect
the ground wire from each channel together
(as if shorting across the two
center points (lugs) of the Grounding switch
shown below.) |
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For
that matter, you can
skip having a MODE switch too, if you wish.
Simply connect the 1K resistors
to their RCA jacks so you would always be
able to record what you are listening
to - or delete the 1K resistors AND their
RCA jacks from the circuit entirely. |
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The
SOURCE selector
switch shown is a 2 pole, 6 position. This
could be a Goldpoint P/N
2P-6T-1D
(or
modify this to however many inputs you want
to have, such as
4
positions - Goldpoint
P/N 2P-4T-1D.) |
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The
MODE switch is
a 4 pole, 3 position, such as the Goldpoint
P/N 4P-3T-1D |
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The
GROUNDING switch
shown below could be a double pole, center
OFF toggle switch. Alternatively,
it could be a 2 pole, 3 position rotary
switch, such as the Goldpoint
P/N
2P-3T-1D, (or,
likely can simply skip using a grounding
switch.) |
