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Old 29th August 2008, 01:27 PM   #531
udailey is offline udailey  United States
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WRT 1M resistor.. Looks like that would work
Uriah

edit: Hmm. Looking again and not sure. Would that leave each input that was not "ON" at the time without a 1M? I think so, so maybe you actually do need one for each signal.

Looking more... I am pretty sure you need one from each input. Lets say you had the TV turned on and the Pre set to "CD". What would stop input from the TV making its way to the pot if you didnt have the 1M resistor.
I am so new at this as to have no right posting an opinion, but I am trying to learn and thats the logic looking at the circuit that I see.
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Old 29th August 2008, 01:36 PM   #532
Salas is offline Salas  Greece
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Correct, as for the one per input part. Here is where Choky's signature applies ''You edited your question to spoil my answer''.
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Old 29th August 2008, 01:38 PM   #533
Salas is offline Salas  Greece
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Quote:
Originally posted by noelectrix
salas, nice looking! It fits the supposed "house-doctor" mode in its tecno/medical style. Just to bring it with you to different healthy power amps for testing
Plus non ferromagnetic.
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Old 29th August 2008, 01:38 PM   #534
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But when its not ON, then R is infinite for the source (that is not ON)

stefan
edittwo answers meanwhile, youre very fast )

Thanx
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Old 29th August 2008, 01:43 PM   #535
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ah, i see , R is of course not an infinite one
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Old 29th August 2008, 01:46 PM   #536
udailey is offline udailey  United States
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This was my concern if you were watching TV but not wanting it to come through your speakers.
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Old 29th August 2008, 01:51 PM   #537
Salas is offline Salas  Greece
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These are just terminal resistors so to avoid thumps when switching inputs due to the fact that the original single rail B1 has an input capacitor. And you need one for each input. At least I guess so.
Nelson can explain what he got with and without them, I never made the single rail B1.
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Old 30th August 2008, 02:48 AM   #538
udailey is offline udailey  United States
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I think I have some DC buzz coming through. I was thinking of using a blocking cap but I dont know how to decide which cap to use. Can you guys help me with this?
Uriah
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Old 30th August 2008, 04:28 AM   #539
Salas is offline Salas  Greece
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DC does not buzz.
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Old 30th August 2008, 01:48 PM   #540
udailey is offline udailey  United States
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Well something does. I have a wallwart as a supply and would rather filter the buzz that I think is the fault of the wallwart than build a new supply that may buzz as well. Also, when I turn the pots ALL the way down, on that last click, they squelch. What I have been told is that this is the fault of DC that wasnt supposed to be there. So, if anyone has a suggestion I would appreciate it.
Thanks
Uriah

I thought that if I had some DC on my house line from a goofy power supply elsewhere in the house that it might make other transformers humm and that would cause the buzzing. That IS right isnt it?
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