Quick rundown of everything I did tonight:
To test the SC-V's I moved them right next to my SC-IV's, speaker "B on the left and speaker "A" on the right. I shut off the amp, swapped the speaker cable on left side from the IV to the V, turned the amp back on, and heard the lack of midrange and highs as soon as I turned up the volume. Just to be clear, V connected on the left, IV connected on the right, undisturbed from how it had been for over a year. I thought it was a jumper or cable issue at first so I rechecked cable and binding post jumpers several times with the same end result.
I moved the speaker cable from the V (left) back to the IV (left), turned the amp back on and everything was perfect with both IV's connected again. I then repeated the same process on the right side that I had done on the left; turn off the amp, disconnect the IV (right), hook up the V (right), while the left channel was connected to the IV. Same thing, no mids or highs out of the SC-V on the right. I again rechecked connections and found no problems. I swapped the speaker cable from the right V back to the right IV and everything's fine again.
After discovering the lack of midrange and highs with both speakers I pulled the crossover on the "B" speaker thinking something might have got bounced around and disconnected during shipping, and saw no issues. I used my multi-meter to measure continuity between the binding posts and where the wires to the drivers are soldered and didn't see any problems. I decided to pull a driver to check if there was anything odd going on with them. I removed the upper mid on speaker "B", measured it, and found the open voice coil. I then pulled the lower mid and found the same problem, open voice coil. After both mids on speaker "B" measured bad I pulled the upper mid out of speaker "A", measured it, and found open voice coil. I then pulled the bottom mid and it's voice coil also measured open. All 4 bad.
Both of my IV's are hooked up again and working perfectly, so it's not an issue with my equipment or cables. I was also careful powering things off and on and the volume control; turning on the amp, then slowly raising the volume up from 0. I never turned the volume up past what would be considered background music levels, and as mentioned, tested SC-V (left) and SC-IV (right), then reversed to SC-IV (left) and SC-V (right). I never had both SC-V's connected at the same time. My pre volume control range is 0 - 70, I never had it past 8, which is normal conversation level.
I have not pulled the crossover out of the "A" speaker since the one in speaker "B" seems to measure fine, and it's the drivers I've found that measure bad.
What do we do? Do I contact the shipper for insurance claim, US Audio Mart, my household insurance agent... ? I don't understand how they're listed as "excellent condition" and then have 6 drivers that are bad the first time I get them hooked up to my system. I could maybe understand one mid possibly getting damaged in shipping since John changed from the domes to cones because he had a few issues, but not all four mids, and both tweeters.
I am 100% certain I didn't do anything that could have possibly damaged the speakers, because if I had, it would have ruined one or both of my SC-IV's since I connected one V while a IV was connected on the opposite channel. Both V's were never hooked up at the same time, and now both IV's are hooked up again and working perfectly. There weren't any strange noises that could have damaged any drivers either. I'm at a complete loss, and about sick to my stomach over this.