One of the things to consider is something I never heard mentioned. Since the subs will go through A/D and then D/A conversion, and various filters, there will be a systems delay. Not sure how much, but I would think at least 30ms. This is equivalent to over 30ft, so is substantial.
It may be worth checking with manufacuters how much systems delay their product has (function of processing horsepower I presume), and factor that into your choice. Thenagain, the proof is in the listening and Kal has heard quite a few of these units and never reported this as an issue. However, since there is no way of knowing how things would sound if the delay issue did not exist, this does not proof it is not audible.
The only way aorund this is to insert an all digital DRC system with EQ, Xover and phase / time alignment into the digital chain.
I went from the Sub EQ approach (used SVS) to the DRC / Xover approach with great success. If you have analog sources you would need ot do A/D conversion though, which may be a dealbreaker. Also a lot more money and system complexity to go the digital route.
It may be worth checking with manufacuters how much systems delay their product has (function of processing horsepower I presume), and factor that into your choice. Thenagain, the proof is in the listening and Kal has heard quite a few of these units and never reported this as an issue. However, since there is no way of knowing how things would sound if the delay issue did not exist, this does not proof it is not audible.
The only way aorund this is to insert an all digital DRC system with EQ, Xover and phase / time alignment into the digital chain.
I went from the Sub EQ approach (used SVS) to the DRC / Xover approach with great success. If you have analog sources you would need ot do A/D conversion though, which may be a dealbreaker. Also a lot more money and system complexity to go the digital route.