Apogee Duetta II crossovers

Description

These are the original crossovers from my Apogee Duetta II loudspeakers, which were shipped to me new from the factory, and which I had upgraded a few years ago.
There were no issues with the functioning of the crossovers, but the upgrade involved replacing them with the preferred crossover of the man who did the upgrade.
The original speakers were made late in the model lifetime of the Duetta II, just before the Duetta Signature was released, and they included some of the virtues of the Signatures, such as greater efficiency and more extended treble response, which I think may have been functions of these crossovers.