Originally Posted by ambesolman
The danley hasa me confused. where are all these drivers? 2x 12", 4x 5", 1 x1" I'd guess the tweeter is at the base of the horn, but what about the others? and what are all those holes in the horn walls?
Those "holes" are acoustic low pass filters. So they filter out the distortion components-resulting in the "cleaner" sound.
The holes are large enough to pass the intended freq of interest-but as the freq goes higher they reduce the level.
Let's say you play a 300 hz tone. That 300Hz will come out of the woofer. But the woofer will also generate (all speakers do this BTW) the overtones of 600-900-1200Hz etc.
Since the holes act as acoustic low pass filters, those higher "distortion" tones are reduced in level-so what you hear is more of just the intended 300hz tone.
So basically they are "distortion reducers".
Yes the HF is in the very back of the horn.
The holes in the sides of the cabinet (not the ones in front of the woofers) use our Tapped horn technology so that the path length from the rear of the 12" adds to the lower end of the direct output which give it the extra low freq and higher sensitivity.
Now there is a lot more going on besides putting "holes" in front of drivers. The placement of the holes vs wavelength-the thickness of the wood where the hole is and the air volume trapped between the driver and the baffle are all part of the proper design. Simply cutting a hole is not going to result in the same results we get.
And then again the crossover design is "not normal". This results in the good phase response.