Posted by Bill Fitzmaurice [ 64.12.116.135 ] on April 13, 2004 at 16:11:42:
In Reply to: Re: Questions on Midrange Drivers posted by Bill Wassilak on April 13, 2004 at 10:48:21:
I use McBean, and while it is reasonably accurate in predicting Fc and about an octave or two higher, it is way off the mark past that. How high can a twelve go? My DR12 loaded with an EVM 12L gets 114dB at 4kHz, and it's a folded horn to boot. The question shouldn't be how high can you go, but how high before dispersion gets too beamy for a particular application. For example, look at the axial plot in this chart for my DR 250a, and note how things start getting a bit hinky around 2kHz, which is where it gets crossed over to the HF section not because of SPL (the SN10 woofer is fine to 4kHz) but because of dispersion.
[ HighEfficiencySpeakers Forum ] [ Help ]