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In Reply to: RE: hum related posted by John Elison on January 17, 2015 at 09:49:20:
John, It was spinning. I did some more tests using 70 ohm load rather than the previously used 100. By chance, the first test was done without a record clamped to the table.
I thought the 70 ohm setting had made the difference until I clamped a record to the table to run the second test. This is before needle drop.
This is after needle drop.
I can also slightly change the 120 hz intensity by changing the position of the arm. Is this bearing noise?
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Follow Ups
- RE: hum related or bearing noise? - rrob 01/17/1510:20:54 01/17/15 (7)
- RE: hum related or bearing noise? - John Elison 12:57:26 01/17/15 (6)
- RE: hum related or bearing noise? - rrob 14:30:39 01/17/15 (5)
- RE: hum related or bearing noise? - John Elison 15:41:50 01/17/15 (4)
- RE: hum and motor noise - rrob 19:14:31 01/17/15 (3)
- "With the motor spinning and the belt removed, the 120 hz frequency still increased" ... - andyr 17:20:51 01/18/15 (1)
- RE: "With the motor spinning and the belt removed, the 120 hz frequency still increased" ... - rrob 17:44:31 01/18/15 (0)
- Huh, goes to show that belt drive doesn't fix everything. -nt - Bry 13:18:28 01/18/15 (0)