GoodSoundClub - Romy the Cat's Audio Site

In the Forum: Horn-Loaded Speakers
In the Thread: Ultimate MF compression driver?

Post Subject: You must hear the actual sound resultPosted by haralanov on: 3/5/2012

Romy, if you have some spare diaphragm/VC assemblies for your S2 drivers, do the experiment I mentioned above (remove the outer layer of the VC) and we will talk about the inductance in terms of sound after you hear the results with your own ears... You can use 3-4” paper cone in front of the horn to block the HF content above 11-12-13kHz – this acoustic filter does not rotate electrical phase of the signal. At the same time you can use very small series coil as a lowpass filter at 16-17kHz in order to lower the density of the frequency spectrum which makes the diaphragm to resonate. Of course this coil will also rotate the electrical phase, but it will do it at much higher frequency compared to the high self inductance of the VC.

In my previous posting I haven’t said that the compression driver must be used in 300-15000Hz range – it is more than obvious the horn itself will be the limiting factor and I don’t know why mentioned it. The low inductance is needed not to use a given driver up to 15kHz, but to avoid phase fluctuations in the upper midrange.

Best regards,
Petar

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