The problem you run into would be the large size of coils, capacitors and dummy load = not cheap. :spend:Hi all,
It does look like I could tune it to 25Hz with a single 3.23 + 8" port and by keeping program material below 200W cone excursion looks fine if I use a 25Hz Butterworth High Pass filter. Can I add this filter as a passive crossover type component?
Then you have to consider the dummy 8Ω load needed for the sub 25Hz content.
If you are running 500 Watts it needs to be able to dissipate the 500 Watts in a worst case scenario.
As Mike says, do the filtering before the power amp, easier and cheaper. :T