Open Baffle Bass, closer to horn bass?

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I decided to try and build an open baffle speaker today with a old tannoy 15 I had lying around

If you want low bass in an open baffle, you should read the Slot Loaded Open Baffle article on Nelson Pass's Firstwatt site RE: OB Woofer Anyway, I am giving serious thought to using a slot loaded open baffle instead of putting a driver in a smaller coffin I am looking for

augmentation slot component open cockpit behind the hopper Agitator Equip the hopper with an agitator Baffle When it is necessary to apply material at very low rates 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