EV SP12C with too-low output and too-high coil DCR... - diyAudio
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Old 20th June 2009, 09:42 PM   #1
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Default EV SP12C with too-low output and too-high coil DCR...

Well, I know it's broken

But what's the likely cause of this? Bad coil winding? I'm seeing about 40-50R on the coil at DC, and measuring about 10dB reduced output. Should I just replace it, or can this be serviced?
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Old 21st June 2009, 04:39 PM   #2
Piek is offline Piek  Europe
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Did you check the wiring/solder that leads to the cone?

-Micha
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Old 21st June 2009, 09:31 PM   #3
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Up to where they enter the cone, it seems okay. I do think it's possibly a wiring problem on the other side, but I hesitate to cut out the dust cap and whizzer to figure it out (I don't exactly know what I'm doing). The first time I measured, I got 38R, now I get 63R.
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