Open Baffle Bass, closer to horn bass?

DYI Open-Baffle Speakers - is it hard to do? slot loaded open baffle This is the Nelson Pass slot-loaded open baffle The “compression” in the slot is reported to lower the Fs and raise the Qts of the drivers Pass added a second slot official I decided to try and build an open baffle speaker today with a old tannoy 15 I had lying around

slot machine spin button Now it is a slot loaded open baffle We used a few years on the design of prototypes Time pass too fast