Checking if tweeters are working?

joe58 · 26th June 2011, 02:35 PM

Can I simply connect them up to my amp and carefully run a (say) 15000hz sin wave through them on winISD?

They are currently connected to some fullrangers and I can't tell if there working or my circuit is correct, so I want to check them on their own. Plus I don't have any measuring equipment.

Thanks

Mooly · 02:43 PM

Not the best way tbh.
First you can do a simple resistance check across each tweeter. That is 95% good enough.
Then you can connect to any amplifier but via a small cap of say 1uf and just play some music. You must not connect directly.

Edit... just to explain why its not the best way. 15Khz is high and some folk can not hear that. Also you might be surprised just how much "power" or rather voltage is needed to get what you think is a reasonable level at that frequency. Perhaps damagingly high. Music is a far better general test believe it or not

joe58 · 26th June 2011, 02:49 PM

Thanks, I don't have anything to check the resistance, but do have a 1uf cap. I know not the best, but can I just simply go to this step without doing damaging anything?

Cal Weldon · 26th June 2011, 02:58 PM

Yes but make sure the volume is set to low and then bring it up slowly.

joe58 · 26th June 2011, 03:14 PM

Thanks for your help, I can confirm that one is working, I'll check the other later.

Cal Weldon · 26th June 2011, 03:16 PM

Good news.

joe58 · 26th June 2011, 03:24 PM

Indeed when you doing things to a budget you can't just write stuff off and get new ones. Lets just hope the other one works.

26th June 2011, 02:35 PM	#1
joe58 diyAudio Member Join Date: Dec 2009 Location: England	Checking if tweeters are working? Can I simply connect them up to my amp and carefully run a (say) 15000hz sin wave through them on winISD? They are currently connected to some fullrangers and I can't tell if there working or my circuit is correct, so I want to check them on their own. Plus I don't have any measuring equipment. Thanks

26th June 2011, 02:38 PM	#2
Mooly diyAudio Member Join Date: Sep 2007	Not the best way tbh. First you can do a simple resistance check across each tweeter. That is 95% good enough. Then you can connect to any amplifier but via a small cap of say 1uf and just play some music. You must not connect directly. Edit... just to explain why its not the best way. 15Khz is high and some folk can not hear that. Also you might be surprised just how much "power" or rather voltage is needed to get what *you* think is a reasonable level at that frequency. Perhaps damagingly high. Music is a far better general test believe it or not __________________ ------------------------------------------------------- *A simulation free zone.* *Design it, build it, test it.* Last edited by Mooly; 26th June 2011 at 02:43 PM.

26th June 2011, 02:58 PM	#4
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	Yes but make sure the volume is set to low and then bring it up slowly. __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting

26th June 2011, 03:16 PM	#6
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	Good news. __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting

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26th June 2011, 02:49 PM	#3
joe58 diyAudio Member Join Date: Dec 2009 Location: England	Thanks, I don't have anything to check the resistance, but do have a 1uf cap. I know not the best, but can I just simply go to this step without doing damaging anything?

26th June 2011, 03:14 PM	#5
joe58 diyAudio Member Join Date: Dec 2009 Location: England	Thanks for your help, I can confirm that one is working, I'll check the other later.

26th June 2011, 03:24 PM	#7
joe58 diyAudio Member Join Date: Dec 2009 Location: England	Indeed when you doing things to a budget you can't just write stuff off and get new ones. Lets just hope the other one works.

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