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Re: Piezo chirping [message #37129 is a reply to message #37128]

Mon, 01 July 2002 22:33

Wayne Parham
Messages: 18791
Registered: January 2001

Illuminati (33rd Degree)

I've run into this before. If the amplifier can't damp the system well enough, back EMF causes the tweeters to oscillate - making that chirping sound. I've found it to be the case with woofers having high inductance voice coils, even on amplifiers with good damping ability.

Try connecting the woofers in series, so that load resistance is raised. This will also raise inductance, but since these woofers are known to work well with piezos in most cases, you may find a solution in this. You could also use a single compression driver to replace the piezo's, if no other solutions are found.

Discussions about back-EMF and piezoelectric tweeters

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[Message index]

		Piezo chirping By: dbeardsl on Mon, 01 July 2002 20:45
		Re: Piezo chirping By: Wayne Parham on Mon, 01 July 2002 22:33
		continued.... By: dbeardsl on Tue, 02 July 2002 01:43
		Try a proper x-o on the piezos By: Andy.G on Wed, 03 July 2002 05:03
		arg.. By: dbeardsl on Thu, 04 July 2002 00:11
		Re: arg.. By: Wayne Parham on Thu, 04 July 2002 01:18
		Proper Guitar Spkr Design By: Paul C. on Sat, 06 July 2002 07:45
		Re: Proper Guitar Spkr Design By: Paul C. on Sat, 06 July 2002 08:15
		Re: Proper Guitar Spkr Design By: Paul C. on Sat, 06 July 2002 10:50
		Thanks... By: dbeardsl on Sat, 06 July 2002 11:19
		Re: Thanks... By: Paul C. on Sat, 06 July 2002 11:39

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