Peerless/Usher – Post #3

New Crossover:
I have been working on my LR4 crossover to fix some of the flaws, but I also decided to try a LR2 configuration.  The results are interesting.  Once the drivers were made to hit the LR2 targets the phase was not tracking well at all with the tweeter polarity reversed (as it should be in a LR2).  Switching the tweeter back to positive polarity got the phases closer, but would still have required a very asymmetrical filter to align the phases with any accuracy and they only tracked for a few hundred Hz.  So I chose to use a ladder delay network to help align the phases.  It is a lot of fiddling, but I think it came out quite well.

2200_lr2-overlay

2200_lr2

Crossover Info

2200_lr2-phase

Phase Tracking

2200_lr2-phasewithoutladder

Phase Tracking before ladder network

2200_lr2-z

Impedance

2200_lr2-cad

LR2 @ 2200

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