I've restored a dozen or more TD124s. Recently I sold one to a guy and it instantly developed a problem. Before leaving my shop it was running very well: it came up to speed and stabilized in less than 5 minutes. He picked it up, so no shipping damage. When he got home and connected it, the speed was substantially slow - to the point that the eddy brake needed to be adjusted (i.e. couldn't be corrected with pitch control). Plus, when he dropped the needle, it slowed the table noticeably. I took it back and plugged it in to see if i could identify the problem. It worked perfectly right from the start. I was baffled until I learned that he was using an AudioQuest Niagra 1200 power conditioner. I have been on their website and can't really discern any facts about what it does. Just marketing hype and assorted blah, blah, blah. I'm curious to know what it might be doing to cause such a problem. The 124 is, of course, mostly dependent upon line frequency for speed control, but it will sag if voltage is quite low. I also wondered if maybe the guy had the power conditioner overloaded with other units (it's only rated for 15 amps) and not providing sufficient current.
If anyone has any thought, I'd be curious. I've taken the table back and will sell it again but am just curious. Cheers.
If anyone has any thought, I'd be curious. I've taken the table back and will sell it again but am just curious. Cheers.
The AQ presumably does some filtering and some PFC. If it is indeed the cause of the problem it appears to get upset by the inductive load.
Can your customer not just plug the tt straight in the wall?
Can your customer not just plug the tt straight in the wall?