Re: New DIY Mid High
I did some work/measurements with box flown about 3.5m in the air. It was too windy yesterday and I will need to do them again but it was worth posting the results. The response is shown with the desks high pass filter in. Flying the boxes to take a measurement is soooo much better than trying to do a plot near the ground. The results also seem to voice well.
FWIW I also have posted some of my early SIMs - Horn Response will calculate directivity and SPL, but not for this box. Only "standard" horns without bends and ports. The results should however give some indication of what to expect.
I have also shown some square wave plots (100, 200, 500, 1000 & 4000) - because the phase and amplitude are not both flat below 300Hz there is some wave form shape distortion on the 100Hz and 200Hz plots ... but still exceptional.
Also note the 4.0KHz plot - this is basically a Fourier series where you can only see 2 sine waves - 4.0 Khz sine wave + 12KHz sine wave. The 20.0 Khz sine wave (and above) component you won't see ... so its more or less about as good as it gets. Systune does not display a 4KHz square wave form the signal generator any better.
