The Bifrost is a 2 way bass reflex in 18 L box.
Frequency response is 42Hz to 25KHz.
Sensitivity: 88db 1W/1M
The tweeter is the Seas Excel T29CF002 Crescendo.
The woofer is the Seas Excel W18NX001 Nextel cone.
The low pass network is a 3rd order design.
The high pass network employs a conventional 2nd order filter
with an L-pad network.
The X-over frequency is 2.2KHz