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Is speaker blown?
Is speaker blown?
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Old 26th January 2018, 09:38 PM   #1
Zwiller is offline Zwiller  United States
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Default Is speaker blown?

Powered Behringer sub and obvious distortion displayed even at low levels. No scraping or anything felt pushing cone and meter displays continuity and resistance 6.1ohms over terminals. Did not expect that... Should resistance remain the same as cone is moved or change? It goes kind wonky and all over.

Anything else I can try besides trying another driver in cab/hook this driver up? Nothing readily available. Thanks in advance!
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Old 26th January 2018, 09:58 PM   #2
rayma is offline rayma  United States
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Quote:
Originally Posted by Zwiller View Post
Powered Behringer sub and obvious distortion displayed even at low levels.
The amplifier may be bad, or a fuse blown.
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Old 26th January 2018, 10:07 PM   #3
nigelwright7557 is offline nigelwright7557  United Kingdom
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If the voice coil is fried they tend to have low impedance.

The resistance on a meter will vary if you push the cone in and out (it generates a voltage.)

I would try speaker on a different amp.
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Old 26th January 2018, 10:20 PM   #4
conanski is offline conanski  Canada
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A blown amplifier or power supply is the most likely problem.
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Old 31st January 2018, 02:58 PM   #5
Zwiller is offline Zwiller  United States
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Thanks so far!

UPDATE: Tested speaker out of enclosure and do not notice distortion. Tested amp with another sub and do not notice distortion. Only thing weird was one of the driver mounting screws was not properly fastened. Remount driver and test? I have had my fare share of blown speakers and amps going bad but the issue I am having is very mild in comparison but definitely there. Enough that non audio people can tell. Small air leak? Weird.
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Old 31st January 2018, 03:43 PM   #6
Brian Steele is offline Brian Steele  Grenada
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Quote:
Originally Posted by Zwiller View Post
Thanks so far!

UPDATE: Tested speaker out of enclosure and do not notice distortion. Tested amp with another sub and do not notice distortion. Only thing weird was one of the driver mounting screws was not properly fastened. Remount driver and test? I have had my fare share of blown speakers and amps going bad but the issue I am having is very mild in comparison but definitely there. Enough that non audio people can tell. Small air leak? Weird.
Check the driver's suspension to see if there are any holes.
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Old 31st January 2018, 10:25 PM   #7
Zwiller is offline Zwiller  United States
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Good idea but nothing...
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Old 31st January 2018, 10:35 PM   #8
scottjoplin is offline scottjoplin  Wales
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When you refit it, rotate it 180, just a thought, the suspension may have sagged over time and caused the voice coil to rub
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Old 1st February 2018, 01:59 PM   #9
Zwiller is offline Zwiller  United States
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Another good idea. Thanks. I think I will try another sub/driver since I used a Keystone to test and since driver is stuffed all the way in there I might not hear the distortion. If that checks out I will remount and try again. Maybe with a new gasket.
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Old 6th February 2018, 04:10 PM   #10
Zwiller is offline Zwiller  United States
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I spent like 2 hours trying to remount the driver... The t-nuts kept randomly pulling out. What a PITA. Long story short. Sounds much better. I think there was some air or loose screw or both. Swear I still hear a little something, but made wife and daughter listen and they say I'm nuts. In their defense only sounds off up close and not far away. Thanks guys!
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