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In Reply to: RE: Do Tannoy DCs have a midrange honk effect ? posted by airtime on November 24, 2014 at 06:25:37
Tannoys are not full range drivers.
They are co-axial 2ways.
The honk disappeared with the introduction of a notch filter as part of the crossover sometime in the early '60s.
With the introduction of the tulip waveguide in 1990 the notch filter became redundant as the cause of the honk had been removed thanks to CAD.
Follow Ups:
I hope the notch filter was removed. I've tried a few designs with notch filters and WOW, did it crap up the sound. Or it just may have been the sound was crappy and the filter couldn't remove all the "noise". That was back in my metal cone dazes.
Either way I avoid anything with a nasty spike before or after designed.
charles
It's not a spike, more a wide(ish) hump.
Tannoys had that in common with the vast majority if not all pre-CAD horns.
Dropping 2-3dB with an medium Q in the right part of the frequency spectrum sorts it out nicely.
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