Wiring a DVC Subwoofer with a SVC Subwoofer?

You shouldn't put two different subs on the same amp. Especially when one is a SVC and the other is DVC. Different subs are going to be different impedances (even if they are both rated at 4 ohms). When a sub is playing the impedance varies. One sub will always end up with more power. If the Alpine sub was blown I don't think someone without the right parts could just fix it correctly. Also, the Type-R Alpine subs only come in DVC. The other thing is that Alpine Type-R more than likely handles 600 watts RMS (depending on the model number). You have an amplifier that is 500 watts RMS. If you want to run two subs like the Type-R you need to have a bigger amplifier to give the subs the power they need. The MRP-M500 is a good amp. It'll power a pair of Type-S subs or a single Type-R without any problem.