Clipping earlier than before?

[dale315 1]

I have a AQ1200d with the clipping indicator on the gain knob, and I noticed that the light blinks earlier than it did before. For example, on a certain song the volume on the HU would be 22 without any clipping. Now at 22 on the same song, it blinks, so I bring it down to 21 and no blinks. I noticed this happened a couple months before also, and it feels like the power of the system is depleting. Is this a sign the electrical is giving out?

Right now, I'm running a 150a alternator, big 3, d34 yellowtop for the front only, and 1400rms for the total of the amps.

[shizzzon 461]

amps will clip earlier than before if they are being ran at a lower voltage.