Here is my proposed sub setup. Let me know what you think and if I should make any changes.
I have a 2003 Subaru Impreza, stock. No electrical upgrades.
Headunit - Alpine CDE-121 Already installed
Ordering:
Amplifier - RF Punch 300-1 (150 RMS at 4ohm | 300 RMS at 2ohm)
Subwoofer - RF...