Measuring tweeter FR without a highpass filter

owdi · 14th March 2007, 12:10 AM

I want to measure the raw in-box frequency response of my Seas 27TBFC/G and Vifa XG18. I would like to do this using a 170 ms long burst of pink noise at 2.83 volts, with a cutoff frequency of 100hz. The woofer will not be a problem, but I'm not sure about the tweeter. Can the tweeter handle this test without a filter? Should I raise the cut off pink noise frequency to avoid damage?

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Measure of tweeter respons

Dan

soongsc · 14th March 2007, 04:30 AM

The only issue I see is room resonances influencing the results.

owdi · 14th March 2007, 04:39 AM

I will be taking gated measurements, so room reflections will not affect the frequency response. I need 170ms because that is the shortest measurement I can take in Arta. Only the first 6ms will be used.

Dan

AKN · 14th March 2007, 05:40 AM

Hi owdi,

Quote:

I want to measure the raw in-box frequency response of my Seas 27TBFC/G and Vifa XG18. I would like to do this using a 170 ms long burst of pink noise at 2.83 volts, with a cutoff frequency of 100hz. The woofer will not be a problem, but I'm not sure about the tweeter. Can the tweeter handle this test without a filter?

Yes, provided your conditions there should be no problem.

14th March 2007, 12:10 AM	#1
owdi diyAudio Member Join Date: Sep 2003 Location: Bellevue, WA	Measuring tweeter FR without a highpass filter I want to measure the raw in-box frequency response of my Seas 27TBFC/G and Vifa XG18. I would like to do this using a 170 ms long burst of pink noise at 2.83 volts, with a cutoff frequency of 100hz. The woofer will not be a problem, but I'm not sure about the tweeter. Can the tweeter handle this test without a filter? Should I raise the cut off pink noise frequency to avoid damage? Search only turned up one thread: Measure of tweeter respons Dan

14th March 2007, 04:30 AM	#2
soongsc diyAudio Member Join Date: Mar 2005 Location: Taiwan	The only issue I see is room resonances influencing the results. __________________ Hear the real thing!

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14th March 2007, 04:39 AM	#3
owdi diyAudio Member Join Date: Sep 2003 Location: Bellevue, WA	I will be taking gated measurements, so room reflections will not affect the frequency response. I need 170ms because that is the shortest measurement I can take in Arta. Only the first 6ms will be used. Dan