Comments on: Tweeter Speaker Repair

By: Christopher Massie

Christopher Massie — Wed, 29 Apr 2020 16:21:37 +0000

This is called a dome tweeter which has a replaceable diaphragm with the voice coil attached . The cone/spider/voice coil are all one unit making it simple to repair. I did not see any burn marks on the voice coil (which would indicate shorting of VC or amp malfunction) which leads me to believe that the problem is a break in a lead or somewhere in the coil winding itself - or a lead/coil wire that is in the process of breaking since the the continuity test is intermittent. The voice coil gap tolerance (between the pole piece and magnet which the voice coil rides in) with the voice coil in place is in the thousandths of an inch. Therefore it is a good practice to take a piece of masking tape doubled over (sticky side out) and run it around inside the voice coil gap to remove ALL debris which may be in there before reassembly. Debris in the VC Gap is one of the biggest causes of speaker failure especially if it is metallic debris. Always do this before installing the voice coil, and tape over the gap if you are doing any further cleaning or work on the speaker so nothing gets in there after you clean it.
Great job Suranga!

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By: Jestine Yong

Jestine Yong — Sat, 18 Apr 2020 04:31:17 +0000

In reply to Fernando andales.

Hi Fernando,

You are welcome and I need to thanks Suranga for the article contribution also.

Jestine

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By: Fernando andales

Fernando andales — Fri, 17 Apr 2020 18:57:45 +0000

Have a good day mr.yong,
Thank you very much for wonderful articles.i'm enjoyed reading to help my career in electronics.
May be next time we will purchase this ebook to support and i love it.thank you very much.

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By: Yogesh Panchal

Yogesh Panchal — Wed, 15 Apr 2020 07:51:38 +0000

Good job! suranga
luckily you got a new replacement for this tweeter speaker or else this speaker could have gone to earth fill..................

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By: Yogesh Panchal

Yogesh Panchal — Wed, 15 Apr 2020 07:44:01 +0000

In reply to Albert van Bemmelen.

Albert, you are right in India rewinding work is common. We have facility of many small scale crash course centers in every states and city of India like ,Motor rewinding,Electrical cabling work ,fridge,AC,Washing machine. Mechanical works,Automobile repair and electronics repair and many more......field for empowering rural peoples and for those who are not educated but skilled peoples.

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By: Gassan Ali

Gassan Ali — Sat, 11 Apr 2020 19:54:03 +0000

Thanks for the video! Your simple explanation of how to test the coils of speakers will be very helpful for me in the future.

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By: Parasuraman S

Parasuraman S — Sat, 11 Apr 2020 10:46:32 +0000

It is not clear to me whether you replaced the coil or replaced the drive (speaker) itself. Anyhow, good work!

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By: Ivan

Ivan — Sat, 11 Apr 2020 09:59:04 +0000

Thanks

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By: Albert van Bemmelen

Albert van Bemmelen — Sat, 11 Apr 2020 06:47:48 +0000

Fixing speakers by repairing a bad coil is hard to do which I know is often done in specialized countries like probably yours. Like fixing bad transformers by rewinding them in India is common. Just replacing bad speakers by a new loudspeaker in my country is the only option left. Like replacing the bad Westra 160-1324 4 ohm Subwoofer speakers in my Elac 2-way 80 Watt peak speaker boxes I was fortunate to find second hand on eBay. (Because universal replacement speakers are often mid-toners going much higher upto about 7KHz instead of up to 45-4KHz at 88dB in original Westra Subwoofers which simply sounds much better).

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