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We recently purchased four AM7212/64 speakers for our main sanctuary. The installer configured them in stereo bi-amplified with a Crown DSi 1000 for the HF and Crown DSi 4000 for the LF. I checked the amp's configuration after installation, and the only settings that were made were x-over points and -3db limiting.

The x-over point he set in the Crown amps was 1.2kHz with a 24dbs slope. However, according to the spec sheet, the internal passive x-over is set at 1.8kHz. Should I change the x-over point to match the internal x-over?

I have noticed that this installer wants to x-over every speaker at 1.2kHz, as he did with our previous speakers, which were spec'd to x-over at 800Hz. Is 1.2kHz some sort of standard I don't know about? I am more naturally inclined to follow specifications, as that is what the designer intended.

Also, we have a dbx DriveRack 260 that he completely removed from the system. Should I add it back, turn off processing in the amp, and use the x-over and DSP in the DriveRack 260?