Thanks for all the support. More questions:
When using the HWK 18 can it be used horizontally? If so could/should the two ports be facing up? What testing bits and peices do I neede I have heard the Mach 5 18" driver will work well. Are there Thiel Small parameters mentioned somewhere for the HWK 18 that I have missed? I see specs for the HWK 15.
Fr. Ray
The parishioners are looking ay me sideways for building this sub but the new organist is very pleased.