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Originally Posted by Nolan Woodbury
Blooze,
When I first looked at the chassis photo of your K731 and saw the enormous amount of splooge around the electrostatic tweeter, I laughed out loud and thought; "What idiot squeezed all that in there?" then it dawned on me. I've been having a devil of a time getting harmonic buzz out of my C730, so last night I pulled the tweeter out (it's held in with two fragile little clips that attach to the corners) and fashioned a neat little silicon 'bed' then re-attached the tweeter. Magic! The buzz is gone, and my favorite radio can once again be cranked and enjoyed as intended.
See, it pays to look at the pictures!
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Hi Nolan:
I saw that picture of the "innards" of Shane's K-731 and also noticed all that gunk around the electrostat. I wondered myself what it was.
I couldn't imagine Zenith would have used such a cheap method of securing the tweeter to the cabinet in a radio like this (or any of their other vintage receivers, for that matter); the original Zenith Radio Corp. had too much class for that, IMHO. Then I read the rest of your answer and saw your comments about the four clips that hold the tweeter in place in the cabinet; that made a lot more sense.
I haven't had the back off my own K-731 in months, so don't know whether the tweeter has the same stuff around it that Shane's has. It probably does, though.
Now you have me wondering. What on earth was the purpose of all that junk around the electrostat tweeter? If it was not to mount the thing in the cabinet, then I'm baffled.
BTW, I will send you a PM addressing another matter after I write this.