Hello as I am waiting the border to reopen, I have been drafting my new system concept on a Servo Sub + NX -MTM basis, looking at evolving one day into a Super7 in the future.
I have 2 main questions for the community here
1- Can we have 4 Drivers on the Sub Amplifier (A370PEQ) to support both Left and Right Channel at the same time
Three drivers are the limit.
2- Is it better to use a XLR spliter from the DAC to get to the Sub Amp or have the crossover to feed the sub amp. (current design would allow me to go to a 4 way crossover configuration)
Typically you'll want to feed it through a pre-amp.
3- Does the configuration below has any weak link?
Oh yea, big time.
There are budget level passive filters and there are super high quality passive filters. The same is true for electronic crossovers.
If you are really good and designing them then a custom electronic crossover can be designed for those drivers. Doing so would be complex and pricey to use high quality parts and power supplies.
Off the shelf electron crossovers typically pass the signal through a group of op amps, have small and noisy A/C power supplies, and only allow control of crossover slopes and not control over a driver within its pass band.
So adding an average budget level electronic crossover to an NX-Otica MTM design is like building a race car and putting in a budget level underpower engine.
As designed the passive filters in the NX-Otica MTM are top level just like the drivers. Build it as is to get the best results.