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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.) |
