I'm building a mobile stereo and I've finally decided to go with 2 or 3 12v batteries depending on which amp I get.
I would really like to add a sub but I'm not sure which amp I would need for that. The DDX320 won't work because it is digital only and I need to connect an IPOD. That's too bad because then I could have one amp for both the sub and speakers.
For the sub, If I go with a T3 or T4 and only used one channel (or use two subs), would I need some sort of band-pass filter to connect it to the sub to limit the frequency?