The Canary-II explores the behaviour of the Waveguide
at a lower crossover frequency. Instead of crossing at
2.5kHz, the revised crossover is at 2.0kHz (12dB/oct).
10 shows the comparative plots of the Raw waveguide (Black
trace), the waveguide at 2.5kHz (Red trace) and lastly
at the new fc of 2.0kHz (Blue trace). All traces are normalized
to the 2.0kHz crossover.