Unfortunately, I do not have any test reports from the ES180. The measurements from
Voice Coil are unfortunately not performed on an IEC baffle - what is shown does not look bad.
Fit would in any case the Dayton RS-180P-8, low harmonic distortion (HD) and up to 1.7kHz virtually error-free FR (@1.8kHz small resonance).
For extremely low HD, SBAcoustics would be an option (SB17CAC35-4 or SB17NBAC35-4). But these are designed for larger volumes - that should not be a problem with active tuning.
The directivity of the tweeter in the Directiva cabinet is so even (according to the simulation) that one is very flexible with regard to the crossover frequency.
Starting at
[email protected], anything is possible. This also leaves a lot of room for fine-tuning (via listening sessions).
As examples, the simulated crossover frequencies for the Directiva, once with
[email protected] and
[email protected] (in the middle diagram: on-axis = black, LW = green, IR = orange, SP = blue, DI = red):
View attachment 118547 View attachment 118548