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flumoxed
Junior Contributor 10+
Joined: 30 Mar 2015
Posts: 19
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 Posted: Sat Dec 05, 2015 6:24 am Post subject: KEF LF Speaker Bolts |
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Kindly tell me if the three bolts attaching the spider (arrowed in photo) should be fully tightened? (Mine are tightened unevenly.)
Many thanks for your expertise!
Last edited by flumoxed on Thu Oct 12, 2017 5:46 am; edited 1 time in total |
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speakerguru
Über Contributor 1000+
Joined: 18 Nov 2005
Posts: 1192
Location: Green Hut, Tovil
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| Posted: Sat Dec 05, 2015 12:30 pm Post subject: |
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| The three bolts would have originally been torqued up to the same setting. The magnet is decoupled from the chassis by the three soft blue elastomer grommets. It should have some "float". |
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flumoxed
Junior Contributor 10+
Joined: 30 Mar 2015
Posts: 19
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| Posted: Sun Dec 06, 2015 12:47 am Post subject: |
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| speakerguru wrote: | | The three bolts would have originally been torqued up to the same setting. The magnet is decoupled from the chassis by the three soft blue elastomer grommets. It should have some "float". |
I'll check that, speakerguru. Many thanks, and best wishes for a Merry Christmas and Happy New Year.
By tightening/slackening these three bolts and gently depressing the bellows, I stopped the bellows scraping against the cone and cured the distortion problem with one speaker. Speakers sound sweet now... |
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flumoxed
Junior Contributor 10+
Joined: 30 Mar 2015
Posts: 19
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| Posted: Tue Oct 10, 2017 4:09 pm Post subject: KEF SP1280 Spider Bolts |
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Can anyone tell me the specified or approx. torque setting for the spider bolts, please?
The torque driver I'm looking at is rated at 1 - 6 N . M
Many thanks.
Last edited by flumoxed on Thu Oct 12, 2017 5:47 am; edited 1 time in total |
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speakerguru
Über Contributor 1000+
Joined: 18 Nov 2005
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Location: Green Hut, Tovil
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| Posted: Wed Oct 11, 2017 8:55 pm Post subject: Re: KEF SP1280 SPIDER BOLTS |
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| flumoxed wrote: | | Can anyone tell me the specified or approx. torque setting for the spider bolts, please? |
Sorry, no. |
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flumoxed
Junior Contributor 10+
Joined: 30 Mar 2015
Posts: 19
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| Posted: Tue Nov 14, 2017 8:50 am Post subject: Re: KEF SP1280 SPIDER BOLTS |
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| speakerguru wrote: | | flumoxed wrote: | | Can anyone tell me the specified or approx. torque setting for the spider bolts, please? |
Sorry, no. |
Many thanks for your reply.
I measured it at < 1 N . M.
Solution seems to be:
1. Adjust the bolts so that the three soft blue elastomer grommets have some "float" (per your advice).
2. Gently press the bellows up/down to confirm the bellows isn't scraping against the tweeter.
3. If there is a problem, finely tighten/slacken the spider bolt causing the scraping. |
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