These boxes really look like working well, big fellas though !
Beta 12 in 95L reflex tuned to 45Hz handles up to 300Hz (6dB)
Beta 12LT in sealed 33L compartment does 300-3500 (6dB)
Motorola KSN1142 with adjustable attenuation handles the rest.
Still got a bit of tweaking to do on the top end, but they are sounding pretty good, especially when driven hard.Does anyone want me to put plans, x-o etc on my web site??