Last night was screwing around with my amp settings to see what sounded best. This morning, my LF speaker mid began to sound like shit. The speaker sounds...ok at very low volume, but turn it up at all and it starts to thump with a flop-sound, for lack of better words. Is the speaker "blown" (whatever that means)? Is is even possible to blow a speaker with RMS of 90W and max 190W with an 100W/channel amp? How can I tell if it is "blown"? The right speaker sounds great. Speakers are Alpine SPR-13C General • Sensitivity: 86dB /W(1m) • Impedence: 3.6 Ohms • Frequency Response: 70Hz - 27kHz Power Handling • Power Handling Capacity (Peak): 180 Watts • Power Handling Capacity (RMS): 90 Watts • CEA-2031 Power Rating: 90 Watts The Amplifier is Alpine PDX-4.100 CEA-2006 Power Rating (4 Ohm @ 14.4 V = 1% THD+N), S/N 76 dBA (Ref: 1W into 4Ohm): 100W x 4 The HU is an Alpine 9885 if it matters... Any words of wisdom from the experts?