After a month of lurking around reading most of the relevant threads here, I decided to take a plunge with my first DIY and take a stab on the Directiva R1 active
Have most of the parts on order with some exceptions and variations, had to decide quickly as inventory is shrinking and shipping costs are soaring.
PR. I'm planning to experiment with the passive radiator with a target design in mind to integrate a plate amp in the back.
Apart of ordering the 2x 15SB ensuring "compliance" to the R1 reference measurements, I also ordered 4x SB16PFCR-00 planning to mount them on the side panels on the same level with the tweeter. Do not have the ability (yet) to model the acoustic resp with the double PRs, I assumed 2x PR volume rule of thumb as mentioned in the original thread.
In any case I'll build a R1 with the 15SB PR and another one with dual SB16.
Damping material .. could not order the 3/4" triple layer acoustic barrier, I hope I'll get good enough with a Monacor MDM-830 bitumen layer and a single layer 1/2" acoustic barrier.
Amplification, XO, DSP. Ordered a SY-DAP2002 to tinker with the DSP and class D before shedding out for a Hypex PFA, in parallel will also use a PC based front end to validate.