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Can you, please, send the plan and the extended version? firstname.lastname@example.org
Cubo15 wrote: Cubo 15 (= 7, gotta rename that pic ) has been in use for quite some time now and has proven itself in combat, so to speak. Playing around with different horn lengths always measured (only) a tiny improvement in flatting the frequency response whilst highly increasing the difficulty of construction (increasing the amount of angled cuts) and panels. Believe it or not, it took me a few months to come up up with this particular idea, utilising a single panel, no angled or weird cuts, not blocking the magnet vent, allowing for deep drivers, etc. The HR-sims are also quite easily matched with the (more precise configured) AkAbak sims.
The extended version simulates and measures flatter for ~70% of the drivers tested, ussually also found a nicer shaped impedance plot. The other 30% prefers the non-extended form (i.e the Delta Pro 18).
Up till now I have recommended the more complex extended Cubo 15 (with angled cuts) were needed (via mail).