Although there are variations of a typical 15 inch with a compression driver crossed over at around 900hz/1000hz the Econowave DIY build really is mastered with a 12 inch(with no 15 inch as an option) and has some good directivity specs. Why I opted to go with the 15inch I don't know. I am aware that with a 2 inch CD, I can crossover much lower but that would need me to purchase a new waveguide as well as a new CD, hence why I am considering the option of just changing the 15 inch to a 12 inch(fairly afordable and simple enough to CNC a new baffle).
I use digital crossovers with DSP and have 2 decent enough subs and feel that I perhaps have veered to much off the original design parameters of a CD and large PA woofer. My design goals are directivity, well, conformed directivity and I'm hazarding a guess that my 15 inch starts to beam around 600hz and my Dayton PHRN 1014 loses its loading around 1100hz (thanks to Fluid in another thread) so there must be a directivity mismatch.
My questions are
1. What is the right thing to do, get a 2 inch CD or 12 inch woofer.
2. How much difference would the 12 inch woofer make? Is it worth changing the 15 inch to get more power out of the CD down low with less distortion and produce less beaming with the 12 inch crossing it higher?
I use digital crossovers with DSP and have 2 decent enough subs and feel that I perhaps have veered to much off the original design parameters of a CD and large PA woofer. My design goals are directivity, well, conformed directivity and I'm hazarding a guess that my 15 inch starts to beam around 600hz and my Dayton PHRN 1014 loses its loading around 1100hz (thanks to Fluid in another thread) so there must be a directivity mismatch.
My questions are
1. What is the right thing to do, get a 2 inch CD or 12 inch woofer.
2. How much difference would the 12 inch woofer make? Is it worth changing the 15 inch to get more power out of the CD down low with less distortion and produce less beaming with the 12 inch crossing it higher?