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My RCA C9-4
#16

What is with the cones on these old RCA radios? This is the second one I have had to repair. While I was doing the alignment and testing the radio on all three bands, I noticed distortion when the volume was at all above medium low, getting worse with increased volume. I had looked over the speaker quickly before I began to test the radio, and it looked fine, but there must have been a little crack forming where the cone attached to the voice coil, which just got worse as I used the speaker. So, I repaired it. I used a compass to draw two concentric circles one well outside of the crack, and one just a hair bigger than the center where the voice coil is. I then glued it well to both the voice coil and surrounding cone using RTV rubber cement. I slit the circle from the outside to the inside diameter, so that it could overlap slightly as it accommodated for the cone shape. Now I have to let it sit a day or so for the RTV to set up well before I proceed further. I need to start on the cabinet anyway. The radio itself is working fine.
[Image: https://64.media.tumblr.com/43b11c50c1b5...69fc0b.jpg]


Messages In This Thread
My RCA C9-4 - by mikethedruid - 07-29-2021, 06:16 PM
RE: My RCA C9-4 - by mikethedruid - 07-29-2021, 08:25 PM
RE: My RCA C9-4 - by mikethedruid - 07-30-2021, 10:26 PM
RE: My RCA C9-4 - by Dan Walker - 07-31-2021, 09:53 AM
RE: My RCA C9-4 - by mikethedruid - 07-31-2021, 01:18 PM
RE: My RCA C9-4 - by mikethedruid - 07-31-2021, 01:44 PM
RE: My RCA C9-4 - by mikethedruid - 08-01-2021, 02:50 PM
RE: My RCA C9-4 - by Phlogiston - 08-01-2021, 03:24 PM
RE: My RCA C9-4 - by mikethedruid - 08-01-2021, 04:04 PM
RE: My RCA C9-4 - by mikethedruid - 08-01-2021, 07:48 PM
RE: My RCA C9-4 - by PhilcoMike - 08-02-2021, 02:47 PM
RE: My RCA C9-4 - by mikethedruid - 08-03-2021, 03:40 PM
RE: My RCA C9-4 - by mikethedruid - 08-07-2021, 04:27 PM
RE: My RCA C9-4 - by mikethedruid - 08-07-2021, 05:51 PM
RE: My RCA C9-4 - by mikethedruid - 08-08-2021, 12:02 AM
RE: My RCA C9-4 - by mikethedruid - 08-08-2021, 06:05 AM
RE: My RCA C9-4 - by David - 08-08-2021, 09:38 AM
RE: My RCA C9-4 - by mikethedruid - 08-08-2021, 09:06 PM
RE: My RCA C9-4 - by Paul Philco322 - 08-09-2021, 06:38 PM
RE: My RCA C9-4 - by mikethedruid - 08-09-2021, 07:41 PM
RE: My RCA C9-4 - by mikethedruid - 08-09-2021, 09:40 PM
RE: My RCA C9-4 - by mikethedruid - 08-14-2021, 03:18 PM
RE: My RCA C9-4 - by mikethedruid - 08-14-2021, 10:08 PM
RE: My RCA C9-4 - by Paul Philco322 - 08-15-2021, 09:23 AM
RE: My RCA C9-4 - by Ron Ramirez - 08-15-2021, 12:14 PM
RE: My RCA C9-4 - by mikethedruid - 08-15-2021, 12:48 PM
RE: My RCA C9-4 - by Paul Philco322 - 08-15-2021, 01:35 PM
RE: My RCA C9-4 - by mikethedruid - 08-15-2021, 03:40 PM
RE: My RCA C9-4 - by mikethedruid - 08-16-2021, 02:47 AM



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