The price of the Scan-Speak drivers is a problem. Is there any valid substitute without changing the design?
A7 – The Vifa D27TG-45-06 (also the reliable D26TG-35-06) fabric dome or D25AG-35-06 aluminum dome tweeter and P21WO-20-08 woofer could be alternate drivers for the main panel. The mounting hole dimensions need to be changed and some of the component values in the crossover/eq. While this will give you an excellent, natural sounding speaker, it has not quite the same clarity and dynamics as the PHOENIX. See FAQ22. Many other drivers could be used with the same crossover/xo circuit topology. If you leave the crossover frequencies and the main panel dimensions unchanged, then only the woofer and tweeter gain levels, the 1440PH phase shifting networks, and the 400NF notch filter might have to be readjusted. If you change the main panel dimensions, then you are in your own ball game, but the circuit topology should still give you all the necessary functionality.
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