Testing reconed driver |
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scott_fury
Registered User Joined: 28 October 2012 Location: Bristol Status: Offline Points: 319 |
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Posted: 18 June 2019 at 7:23am |
Hi,
What tests should I be performing on a recently reconed driver in order to make sure there are no issues before loading them into a cab and relying on them for gigs, etc.. Thanks!
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Tonskulus
Registered User Joined: 15 September 2017 Location: Finland Status: Offline Points: 425 |
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Check for voice coil rubbing by hand and feed some signal to it at lowish to moderate power levels. Check that suspensions are well glued.
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scott_fury
Registered User Joined: 28 October 2012 Location: Bristol Status: Offline Points: 319 |
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Thanks Tonskulus. I’ve reconed a driver before and found that if I pushed the cone the voice coil rubbed, but pushed the dome and it didn’t. Pushing by hand feels a bit hit and miss. Does it matter what frequency to put through it? For example, the FS of the driver?
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Tonskulus
Registered User Joined: 15 September 2017 Location: Finland Status: Offline Points: 425 |
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Try something like 15-20Hz. Just to get cone moving about 10mm (do NOT exceed Xlim value!), if you hear any rubbing sound its not ok. Keep in mind that voice coil cooling holes may keep some noise..
Yes, voice coil may rub if you push the cone from one side only.
Edited by Tonskulus - 18 June 2019 at 8:28pm |
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scott_fury
Registered User Joined: 28 October 2012 Location: Bristol Status: Offline Points: 319 |
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Thanks for the advice.
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Chris Grimshaw
Registered User Joined: 10 September 2018 Location: Sheffield Status: Offline Points: 281 |
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+1. FWIW, I also test new drivers like this, just to be sure. Turning the volume up briefly means you can push to the mechanical limits (drivers tell you when they're distressed) without worrying about cooking the coil. Chris
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Quality sound from Sheffield
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