I have a minty IA 18" Flatlyne D2, that I have been running on my Old School Alpine MRV 1507 for about a month. Sub was purchased new from gameovercca and the amp was purchased from Ram_Designs. They both work flawlessly.
Power Output: RMS Continuous Power (at 14.4V, 20 Hz to 20 kHz)
Per channel into 4 ohms ...... 225W, 0.08% THD
Per channel into 2 ohms .... 450W, 0.3% THD
Bridged into 4 ohms ..... 900W, 0.3% THD
Alpine 2 channel 240 shipped 10/10 Mechanical 8/10 Looks
Flatlyne 320 shipped 10/10 Mechanical 9.5/10 Looks simply because it has been mounted
I'm looking for a good amp, 2k at 1 ohm