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testing for a blown coil

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Topic review
   

Expand view Topic review: testing for a blown coil

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by diceman1000 » Fri Jun 17, 2005 12:24 am

thank you sir :) ...i was worried about frying another amp if the subs were bad...

Damon

by Jonathan » Thu Jun 16, 2005 1:58 pm

The voice coils aren't gone in them, that's a start. You can hook them up to another amp to make sure you don't hear any mechanical noises, but as far as the DCR they seem fine.

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by diceman1000 » Thu Jun 16, 2005 1:55 am

so can anyone tell me if my subs are ok?

Damon

by GlassWolf » Wed Jun 15, 2005 6:07 am

no amplifier is going to do well if you abuse it and starve it for current while running it hard. You'll kill pretty much any amplifier, although one with a variable duty cycle PWM power supply might survive a bit longer under those circumstances.
The solution is to make sure the amplifier(s) you do use has the current it needs, and that the gain is set properly to match the input voltage.

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by diceman1000 » Wed Jun 15, 2005 1:58 am

yeah,about that loud...so do you think it's just the amp?do you think my subs are ok?...crossfire said it will cost $110 to fix it,if it can be fixed,considering the amp retailed for $500 or better i think it's probably worth it...then again,i've got my eye on an autotek mean machine sx1200,are those pretty good?

Damon

by Jonathan » Tue Jun 14, 2005 1:36 pm

You clipped the amp one way or another. Extreme clipping kills solid state amps (or tube amps for that matter, tube just handle clipping a lil better) very quickly. How high were you using the amp when it blew, extremely loud, to the point of lights dimming and so forth?

by bigbassman » Tue Jun 14, 2005 1:24 pm

diceman1000 wrote:eD 13Kv2 d4's,so are they ok?itested them non hooked up to anything

Damon
considering the source.. its quite likely those higher DCR coils are normal...

I do remember hearing of several ED drivers with high standing DCR's..

Loyd L.

by bigbassman » Tue Jun 14, 2005 1:23 pm

Basstronics wrote:Most 4 Ohm nomail subs have an RE (DC Resistance) of around 2.8 Ohms I thought...
its closer to 3.6 ohm @ room temperature, for copper coils... at least that's the industry accepted measurement for a nominal 4.. some companies have coils that stand somewhat differently..

Loyd L.

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by diceman1000 » Tue Jun 14, 2005 6:07 am

eD 13Kv2 d4's,so are they ok?itested them non hooked up to anything

Damon

by Ryan from Ohio » Tue Jun 14, 2005 6:06 am

Most 4 Ohm nomail subs have an RE (DC Resistance) of around 2.8 Ohms I thought...

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