Double-stacking is out of the question as Z pointed out; they are very directional with regards to mid and tweets so I'm not sure inverting would work properly. Right now I'm just using 4 amps (M4.0t in mono) on 2 speakers for a passive bi-amp and it sounds extremely well feeding from the C-1 (BillD). I'm going to try 2 C-1s (I have a matching pair of BillD C-1s) so I can use 8 amps (mono) on the 4 speakers; it's just an experiment to see if I can make it work properly and if the sound will be proper...
As for the RTR tapes, those are empty reels that needed a place for storage; thanks for the warning as that had not crossed my mind but I use a bulk tape eraser on all tapes before I record on them. Recorded tapes are stored in a separate area...
@Z, the 5A fuses protect the whole speaker according to Cerwin-Vega tech support...
