Guinevere Running [message #30803] |
Thu, 03 March 2005 20:44 |
Forty2wo
Messages: 163 Registered: May 2009
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Master |
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I finaly have a chance to listen. So far so good but I am going to have to get a better choke. I am using what was on hand and have some 120hz buzz. Did the Hammond 193 work out OK for you guys? Don't tell Colin but my filaments are running a bit high...John
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Too late [message #30806 is a reply to message #30803] |
Thu, 03 March 2005 22:01 |
colinhester
Messages: 1349 Registered: May 2009 Location: NE Arkansas
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Illuminati (3rd Degree) |
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I still have yet to track down my left channel hum. It does sound higher than 60Hz, so it might be 120Hz. How is your background noise? At full volume, with no input signal, running through a 100wpc ss amp into 92 dB/W/m open baffle speakers, I'm getting some noise. It's not too bad, but it is there. I need to switch preamps and see if it is the amp itself. Now that I know it works, I'm going to go back and cut some long leads and dress up the wire path and solder joints. I hope this helps. I do have a problem that I cannot track down. I have continuity between signal ground and the top chassis. I have no idea why or even if this is a problem, but the two should be isolated. I cannot see anything that would make contact between the two. The RCA jacks are the obvious place to start, but the threads were heavily wrapprd in teflon tape before inserting. I did install a safety star ground, which is connected to the top plate, to electrical earth for the Txs and choke cases. This is the only possible place it could come from, but the cases should be isolated from the inner windings. Is this something to be concerned about?......Colin PS. I still have not dropped the heater's voltage, so I won't tell if you don't.
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Re: Too late [message #30834 is a reply to message #30829] |
Fri, 04 March 2005 21:02 |
Forty2wo
Messages: 163 Registered: May 2009
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Master |
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I think I am using the same pot RS 100k, I don't know the number. I have seen pots that were shorted but take a look with a glass and a strong light to see if there is not one strand of wire that made it's escape when it was soldered...John
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