Co-designed by J. Owens, and T. Gesualdo
Here is the basic DIY baffle design by James Owens using the La Dolce Audio OB drivers. Not pictured here is the 1" oak stair tread that James used as a base. It came in at a 4' length that he simply cut in half and attached to the baffle with "L" shelf brackets at the bottom.
The drivers used are the LDA HA15.1 woofer for bass and midrange, the modified LDA T1.5 tweeter, and the Harmony HA-P18LS8 subwoofer, which is slot loaded(a rectangle slot). I suggested using a vertical slot to have the slot farther from the baffle edges, but for aesthetic reasons James went with a horizontal slot. James measured response down below 30hz in his room at his listening position.
The crossover used is a 3.3uF capacitor on the tweeter with a Lpad for level matching (we highly suggest this), a 1.5mH choke on the midbass 15" woofer, and a 10mH choke on the 18" woofer.
With the use of an Lpad, you can make the speaker sound practically however you like, bright, warm, and with a subwoofer even a "v" shaped signature. You can also not use a choke on the mid/woofer for a midrange pronounced sound, or one larger than 1.5mh for a more subdued sound. Coming will be more plans that extend the bass even further, and create more options, and some plans with smaller baffles for small rooms.
Jame's Discord where we talk about this DIY project is here:
You can ask questions, talk to others that are making various baffles and ask questions on how to do anything open baffle. There are other channels there too, talking about all things audio.