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Yes, the Model 37 is the typical all-steel bread box, and the condition of the rheostat may have kept me from noticing the phenomenon. I stuffed the chassis into the cabinet, and when I put on the lid the volume significantly decreased. The separate steel cover for the power unit may also help.
How come nobody suggested stuffing a sock in the speaker horn?
I've been considering establishing an earth ground. The electrical system ground is at the opposite side of the mansion; we have modern non-metal plumbing; and the heat/AC vents are connected with non-metal ducts. I am prepared to drill through an outside wall and run a line to the ground. Maybe the close-by A/C compressor cover is earth-grounded?
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Winky Dink
Damn the patina,
Full speed ahead!
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