[apk919]

Originally Posted by dma550

I didn't think the PDX4.150 liked a 2/4 mixed system, I was told it was already a hot running amp and that would drive it into shutdown in 5 minutes (local Alpine dealer). They recommended the 4.150 with a 1.600, same form factor and stackable. YMMV.

As far as I can tell, channels 1 & 2 and channels 3 & 4 are independent of each other and have separate fuses as well (although there are modes that combine inputs), so I wouldn't think that it would make a difference if the load on channels 1 & 2 were different than that on 3 & 4. As far as running hot, I tested it for half an hour last night with the amp in my lap... it didn't seem very warm, nor did it shut down. It's going to be installed on the right side of the package tray behind the passenger's seat, so heat dissipation should be fine.

If I had the room, I'd consider going with separate channels for front, back, and sub, but... it is a Lotus; I feel lucky there's a place for the amp at all.