Questions on L166s, L100s

I just bought a pair of L166s for a friend and what I did notice was on the crossover badge was the model name of L166 instead of the Horizon name that appear on the 2 pair that I own.

Does anyone know what the difference(s) might be?

I know on the L100s that I own, the badge has the model name of L100 and I know most of the L100s on Ebay carry the Century name.

Again what differences would there be between the two?

Thanks in advance.
Rick


:)

History:

L100 networks:

L166 networks:

Note the addition of the 2.0 mH choke on the LF for the L166A and the color code changes for the wiring.

Also note the filter on the HF is identical to the filter for the HF in the 4313/L96/L112/L150A.