New amp is in!
Finally, I found some time this weekend to install the 2nd amp in my car. It took me a few hours because I had to rearrange a bunch of wires and run a new remote turn on to the trunk to power the 2nd amp, not to mention the preout signals to the trunk too. So how does it sound? GREAT! Not the cleanest I've heard, but for $70, well worth it. I'm very happy with the system now! In fact, it seems that because I'm not using the headunits internal amp anymore, the preout voltages have increased. I don't know if this is a "feature" of the headunit or because I had a loose preamp connection before, but I'm not complaining. The highs are many times more crisp now and the midranges aren't as muffled. I think the Infinity Reference speakers like the extra power boost they're getting. Now the bass doesn't sound as overpowering either. And best part, I have so much control over the gains of the cabin speakers, 1st thing I did was level match all the preouts to my liking!
My only gripe about all this is that I mounted the 2nd amp on the subwoofer box. The amp wouldn't fit inside the cabin anywhere. Now, if I want to remove the subwoofer temporarily, I have to unmount the 2nd amp from the box so I can at least still have music without the subwoofer in there. A bit of a pain, but hopefully, I won't have to remove the subwoofer box often.
Only thing left now is to clean up some loose wire ends and fix the loose speaker connection in the front driver door speaker. Also, I have to tie down the sub box better since there is some extra weight on it now from the new amp.
Overall, I'm one happy car audio camper!