True, dont need it for home use.
The HF sensitivity is only 90 dB/1m at 2.83V. That is just as sensitive as stock. I think it is caused by too high compression and poor sealing of the throat chamber, making it larger in volume than intended, which lowers HF efficiency.
The drawback of lower compression ratio on the MF, is bigger ports. This probably will cause more possible interference between the HF sound and the MF ports. But it will be evaluated.
i think i failed in keeping the main path to the exit equal expansion rate. Its all over the place. From 0.8 to 0.97 cm2/cm and back to 0.8. Also, this happens at 26 mm from the HF driver and at 47.5 mm. This corresponds to the dip in the HF fr and polar at 3.3 k and 1.8 k.
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That does seem plausible if the expansion rate changes are happening at the 1/4 wavelength distances. Was the expansion rate more uniform on the prototype that did not have the dip?
