Tweeter measurements

Deafboy · 17th August 2004, 11:37 AM

Hello All,

I would like to measure the acoustic frequency response of my tweeter with MLS signals generated by Speaker Workshop. Should I protect the tweeter from low frequency signals using a passive crossover? If so, then should I choose a low frequency cutoff (say 500 Hz) so not too affect the passband response? Will this be enough to protect the tweeter? I want to measure a Dynaudio D28.

Thanks in advance,

Michel

Salas · 17th August 2004, 07:40 PM

just dont push it above 93dB spl @ 1m. Avoid filters. If your system is not spl calibrated, use an spl meter.

tiroth · 17th August 2004, 08:32 PM

In general I usually use a cap sized so that cutoff is ~2 octaves below where I intend to actually cross the tweeter. I am still measuring the filter but it's contribution is small in the area of interest.

In general, I think you have to be careful. When I was tested the AC G2, the strong Fs resonance completely dominated the pulse response (rings like a bell)...with a suitable HP filter, the results were more usable.

17th August 2004, 11:37 AM	#1
Deafboy diyAudio Member Join Date: Aug 2004 Location: Montréal	Tweeter measurements Hello All, I would like to measure the acoustic frequency response of my tweeter with MLS signals generated by Speaker Workshop. Should I protect the tweeter from low frequency signals using a passive crossover? If so, then should I choose a low frequency cutoff (say 500 Hz) so not too affect the passband response? Will this be enough to protect the tweeter? I want to measure a Dynaudio D28. Thanks in advance, Michel

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17th August 2004, 07:40 PM	#2
Salas diyAudio Chief Moderator Join Date: Oct 2002 Location: Athens-Greece	just dont push it above 93dB spl @ 1m. Avoid filters. If your system is not spl calibrated, use an spl meter.

17th August 2004, 08:32 PM	#3
tiroth diyAudio Member Join Date: Dec 2001 Location: Pittsburgh, PA, USA	In general I usually use a cap sized so that cutoff is ~2 octaves below where I intend to actually cross the tweeter. I am still measuring the filter but it's contribution is small in the area of interest. In general, I think you have to be careful. When I was tested the AC G2, the strong Fs resonance completely dominated the pulse response (rings like a bell)...with a suitable HP filter, the results were more usable.

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