Goodmans Magnum K2 - SL cone rescue - diyAudio
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Goodmans Magnum K2 - SL cone rescue

Posted 27th September 2013 at 12:04 AM by hbc

I recently got some Goodmans Magnums K2, and SLs, in my quest for lovely bass, experienced when I had some Magisters, 6 months ago, but in a smaller box. Like the Magisters the plastic cover of the woofer had started to de-laminate. The K2 had suffered more, so embolden by having 2 pairs of speakers with apparently identical woofers, I decided to have a go at fixing them.

For whatever reason I decided to attack them with my hot air gun. The black material is softened quickly but so did the dust cap glue, so I took that off, and then I just tried to push the soft plastic back on to the cone, and it stuck, a bit at a time with my finger. I then put some hotmelt glue around the edge of the lamination to try to give it some more support. Then I heated up the edge of the lamination and around the back of the dome and put it back on... No idea if it will hold but it was quite easy to do.

The woofers between these K2s and SLs are different, the resonance of the SL is a little higher, but also they seem to have less midrange so swapping between does not seem very successful. Not sure why and may change my mind later.

One of the K2s woofers, the dust cap seems to have slid down, implying that the glue had melted, which implies that the de-lamination may have occurred by being exposed to to much heat, possibly sunshine....

More to follow.
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