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Baicaly that would give you stereo sound on your mids and highs, where it matters, and on the low sub freq, it would be a combonation of the 2 channels, thefore MONO on the sub??????????

But I guess, since I run in MONO (2 amps not bridged), since a lot of places I play have funky speaker placements, just putting the monitor on either the left or right channel would not make a difference since the sound is still mono.

What they are doing with the car amps is hooking the left right  on both sides of the speaker for a pushpull arrangement using both channels to drive one speaker The result is mono and each amp sees 4 ohms versus 8... Note the signals are 180 out of phase...

ot sure.  I had an old Punch amp.  It was stable down to nearly 1 ohm.  It was able to run a set of stereo mains AND a bridged sub with filter/choke - tapped off the 2 positives of each speaker channel.  The only thing that was mono was the sub, the 2 mains were a well defined left & right all running on the same amp.  Really don't know what it did to the ohms & watts each speaker actually recieved.

I can show you how to get +6 dB more performance out of this system with no more financial investment, while having the system configured to prevent anyone from changing the calibration of the Near and Far Field gain structure. The secret to this application is to operate the CS-800X in bridge mode. Connect the Far Field HDH-244T across the two red binding posts of each channel, i.e., in normal bridge mode operation. Then you would connect one of the Near Field HDH-244T's, across the A channels' red and black binding posts. Next, the second Near Field HDH-244T would be connected across the B channels' red and black binding post; however, (note) the second Near Field HDH-244T, that is connected to the B channel output, would have the loudspeaker leads reversed. This is very important, since the B channel is out of phase with the A channel, you don't want the second Near Field speaker to be out of phase, so reversing the loudspeaker leads will maintain the proper polarity. In this application I would recommend reversing the loudspeaker leads at the speaker itself.

This would prevent someone from noticing the different color wires on the A & B channels' red and black banana posts, thinking they are "correcting" someone else's error by changing them around. In this application with a CS-800X, the Far Field HDH-244T would automatically have +6 dB more gain than the Near Field HDH-244T loudspeakers. When the Far Field loudspeaker receives 800 Watts from the power amplifier, each of the Near Field speakers would receive 200 Watts. I have shown you a way in this application to obtain +6 dB more performance in both the Near and Far Field, with no more investment in dollars. Typically, you would have had to quadruple the number of loudspeakers to obtain +6 dB more system performance.

 I aint sure either but dont know what you mean by bridged sub Lon... Did the filter assembly have a transformer that inverted the polarity? To me hooking both positives to opposite sides of a speaker would cancel out but like the pic above if one was inverted it would work..... You got me curious now...

The filter was just a large wire coil wrapped around a hollow iron rod.  6.6mh.  The place that made it was Chokes Unlimited - basically a low pass filter was all it was.  They specialize in speaker crossover components.