Repairing Antique Radio Speakers Without Repairs

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eHam.net Forum : BoatAnchors : Repairing Antique Radio Speakers Without Repairs

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Repairing Antique Radio Speakers Without Repairs	Reply
by WB5YYX on January 27, 2005	Mail this to a friend!
I recently purchased on E-Bay a Bulova model 310 (1957) AM band tabletop radio. The last step after getting it to work well was the tinny distorted speaker output and if I could improve it's performance. Since I already had the back open I removed the four mounting screws on the speaker to physically inspect the speaker cone and voice coil. As I removed the speaker I noticed an oblong particulate matter against the cone's bottom part. I deduced that it was lodged in back of the plastic speaker grille thus producing the tinny distorted audio output. After it's removal I took a can of compressed air and cleaned off the plastic grille, the speaker cone and voice coil. When I applied AC line voltage and turned the radio on most of the speaker's bad sound had gone away! The point here is that I was not expecting a very simple solution to resolve the problem with the speaker output. After fifty or more years and depending how the radio was treated it can accumulate much dust, dirt and particulate matter. Ever see a filthy radio chassis? Maybe the speaker cone and voice coil are just as filthy. While not always true I learned a lesson to look for the simple solution first. Hope this helps all those who enjoy restoring and repairing antique radios.

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