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Educating elsewhere
Posted: Mon Feb 08, 2010 5:53 pm
by mattaudio
Can anyone help educate some haters over here?
http://forums.presonus.com/showthread.p ... 408&page=2
And why exactly does a horn increase impedance?
Re: Educating elsewhere
Posted: Mon Feb 08, 2010 6:10 pm
by LelandCrooks
Impedance is a combination measurement. It is NOT strictly resistance. It represents capacitance, electrical resistance and mechanical reisistance. Ohms are merely a convenient method of measurement. Impedance is increased by the resistance of the air column in horn throat, thereby raising the mechanical resistance of the driver. It is measurable.
Stick a ohmmeter on a raw driver, it will read the same as it does in the box. You have to do actual impedance measuring to determine cab impedance. For most cabs, it's the same as the driver. Horn loaded subs are the exception.
I don't do internet arguments anymore.

Re: Educating elsewhere
Posted: Mon Feb 08, 2010 6:24 pm
by Bill Fitzmaurice
No thanks. There's no point in trying to educate someone who already knows everything there is to know and won't hesitate telling you so.
And why exactly does a horn increase impedance?
The impedance load of the air in the horn is higher than if the driver is exposed directly to the open air.
Re: Educating elsewhere
Posted: Tue Feb 09, 2010 7:21 pm
by djwoo
Is that an electrician's forum?