Re: New DIY Mid High
Peter,
1) The only region they sum is around the acoustic crossover, where the summation presumably would be flat response.
2) In my tests of BMS drivers:
http://soundforums.net/varsity/4329-high-frequency-compression-driver-evaluation.html
they did not perform as well (distortion wise) with single or dual sine waves as other drivers. The EV/BMS distortion figures agree. The output of the BMS is quite smooth though.
3) If one could sum the outputs of two drivers covering the same frequency range without air non-linear losses, the output could be as much as 6 dB more, JBL has a dual ring diaphragm driver that does that. The 4594HE do not do that, as mentioned in #1.
4) That is simply not the case, larger diaphragm area of a given material thickness results in more output. The HF diaphragm of the 4594HE is relatively small. If you were to attempt to get 10 dB more output at 10kHz compared to a DH1A, the 4594HE HF coil would vaporize.
5) Agreed on the Lake, but knowing just from the published figures that the 4594HE’s have less output potential in the crossover region than 3" diaphragm drivers costing far less does not pique interest to play with them. That said, if someone gives me a pair, I'll figure something out ;^)
Art
