Not really. Rythmiks also have the connection to feed off the amp taps, have phase and Q adjustments. But having more variables, hence options, also introduces more uncertainties, which is why sub integration is such a difficult task especially if done without measurement equipment
Ahh ^That^ is interesting.
The Vandy line is designed to be in phase all the way down… So I was concerned that some other sub could be way out of the “driver’s acoustic” phase.